Tech ARP - CPU Performance Comparison Guide Rev. 6.6

	Date :	29 February 2012
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	Category :	Comparisons
	Author :	Dr. Adrian Wong
	Revision :	6.6
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CPU Performance Comparison Guide Rev. 6.6

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CPU Performance Comparison Guide (x264 HD Benchmark)

This article compiles the best benchmark results we collected of various CPU models using x264 HD Benchmark 4.0, a free CPU benchmark developed by graysky, Dashken and Adrian Wong. This CPU performance comparison guide currently covers 129 different CPU models with another 283 CPUs in the older comparison but this is just the beginning. We will keep updating the results as new results come in, so please contribute your results.

If you would like to participate in this endeavor, head over to the x264 HD Benchmark 4.0 page and download a copy. After you obtain your benchmark results, simply post them in the official forum thread of x264 HD Benchmark 4.0. Please post your results even if your processor is already listed in the comparison. This is because we will use your results if they are better than the results currently listed in the comparison.

For accurate results, please remember to close all active applications as well as applications running in the background before you test. Also, if you are using an Intel Core i7 or Core i5 processor (or their Xeon brethren), please be sure to turn off Intel Turbo Mode in the BIOS. If you are using an AMD Phenom processor that supports Turbo Core, please turn it off as well.

Understanding The Results

x264 HD Benchmark 4.0 reports its results in the form of the average frame rate (fps) and the average compression speed (kb/s). For easier understanding, this guide will focus on the average frame rate. This represents the number of video frames compressed per second.

If you look at the results generated by the benchmark, you will see two sets of results - Pass 1 and Pass 2. This is because the benchmark performs a two-pass compression process on the HD video.

In Pass 1 of the benchmark run, the CPU compresses the raw HD video using the x264 codec. The compressed video is then recompressed during Pass 2 to create an even smaller video file. The Pass 2 results will always be much slower than the Pass 1 results because it involves the compression of an already compressed file.

The reason why we run two passes is because the two compression passes stress different aspects of the CPU's performance. The first compression pass emphasizes the processing capability of the CPU core, while the second compression pass is greatly affected by the performance of the CPU's cache and memory controller.

This is important as some CPUs may have better processing capabilities (higher Pass 1 results) with poorer memory performance (lower Pass 2 results) than their competitors. This lowers their overall performance, something which will not be noticed if we did not run the second compression pass. To show you the overall performance of these processors, we also averaged the Pass 1 and Pass 2 results to give you an average frame rate for the two-pass compression process.

Now, let's take a look at the results!

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Section	Topic
The CPU Performance Comparison Guide	• Introduction • Understanding The Results • Revision History
x264 HD Benchmark 4.0 (129 CPUs)	• Unoverclocked Results (Pass 1)
	• Unoverclocked Results (Pass 2)
	• Unoverclocked Results (Average)
	• All Results (Pass 1)
	• All Results (Pass 2)
	• All Results (Average)
x264 HD Benchmark 3.0 (283 CPUs)	• Unoverclocked Results (Pass 1)
	• Unoverclocked Results (Pass 2)
	• Unoverclocked Results (Average)
	• All Results (Pass 1)
	• All Results (Pass 2)
	• All Results (Average)

Questions & Comments

Please feel free to post your questions or comments here!

Next Page : Unoverclocked Results (x264 HD Benchmark 4.0 Pass 1) >>>

Date	Revision	Revision History
29-02-2012	6.6	Added the AMD FX-4100 desktop processor. Added the Intel Core i7-960 desktop processor (overclocked to 4.2 GHz). Added the Intel Core i5-540M mobile processor (overclocked to 3.06 GHz). Added the improved results of the Intel Core i7-860 desktop processor (overclocked to 3.8 GHz). No. of CPUs : 129 (Rev. 4.0) + 283 (Rev. 3.0)
21-01-2012	6.5	Added the Intel Core i7-3930X desktop processor (overclocked to 4.25 GHz). Added the AMD Phenom II X6 960T desktop processor (overclocked to 4.0 GHz). Added the AMD Athlon II X2 260 desktop processor (overclocked to 3.6 GHz). Added the AMD Athlon II X2 260 desktop processor. Added the Intel Core 2 Duo E6300 desktop processor (overclocked to 2.66 GHz). Added the AMD Athlon 64 X2 5050e desktop processor (overclocked to 3.2 GHz). No. of CPUs : 126 (Rev. 4.0) + 283 (Rev. 3.0)
09-12-2011	6.4	Added the Intel Core i7-3960X desktop processor. Added the AMD FX-8130P workstation processor (overclocked to 4.6 GHz). Added the AMD FX-8130P workstation processor. Added the AMD FX-8150 workstation processor. Added the AMD Phenom II X6 1090T desktop processor (overclocked to 3.37 GHz). Added the Intel Xeon X3350 workstation processor. Added the Intel Core 2 Quad Q8200 desktop processor. Added the AMD Sempron 3000+ desktop processor. No. of CPUs : 120 (Rev. 4.0) + 283 (Rev. 3.0)
10-11-2011	6.3	Added the AMD Phenom II X6 1055T desktop processor (overclocked to 3.7 GHz). Added the AMD Athlon II X4 635 desktop processor (overclocked to 3.55 GHz). Added the AMD Athlon 64 X2 5050e desktop processor (overclocked to 2.86 GHz). Added the AMD Turion II M520 mobile processor. Added the AMD Athlon 64 X2 4400+ desktop processor Added the Intel Pentium 4 630 desktop processor. Updated the results of the Intel Atom N270 mobile processor. No. of CPUs : 112 (Rev. 4.0) + 283 (Rev. 3.0)
28-10-2011	6.2	Added the Intel Core i5-2500K desktop processor (overclocked to 5.0 GHz). Added the Intel Core i7-980 desktop processor (overclocked to 4.0 GHz). Added the AMD Phenom II X6 1055T desktop processor (overclocked to 4.13 GHz). Added the Intel Core i7-860 desktop processor. Added the AMD Athlon II X4 635 desktop processor (overclocked to 3.3 GHz). Added the AMD Athlon II X4 635 desktop processor. Added the Intel Core i3-2100 desktop processor. Added the AMD Athlon 64 3200+ desktop processor. Updated the results of the AMD Phenom II X6 1055T desktop processor (overclocked to 3.5 GHz). No. of CPUs : 106 (Rev. 4.0) + 283 (Rev. 3.0)
12-10-2011	6.1	Added the Intel Xeon E5645 workstation processor (overclocked to 3.4 GHz). Added the AMD Phenom II X4 965 BE desktop processor. Added the Dual Intel Xeon E5130 workstation processors. Added the Intel Core 2 Duo E7300 desktop processor. Added the Intel Pentium E2200 desktop processor. Added the Intel Core 2 Duo E6320 desktop processor. Added the Intel Core 2 Duo E4300 desktop processor. Added the Intel Pentium M 750 mobile processor. No. of CPUs : 98 (Rev. 4.0) + 283 (Rev. 3.0)
28-09-2011	6.0	Added the Intel Core i7-860 desktop processor (overclocked to 4.0 GHz). Added the AMD Phenom II X6 1100T desktop processor (overclocked to 3.4 GHz). Added the Intel Core i7-960 desktop processor. Added the AMD A8-3850 desktop processor. Added the Intel Core i5-2430M mobile processor (overclocked to 2.7 GHz). Added the Intel Core 2 Duo E6550 desktop processor. No. of CPUs : 90 (Rev. 4.0) + 283 (Rev. 3.0)
09-09-2011	5.9	Added the Intel Core i7-2600K desktop processor (overclocked to 5.18 GHz). Added the Intel Core i7-970 desktop processor (overclocked to 4.25 GHz). Added the Dual Intel Xeon X5650 workstation processor (overclocked to 2.8 GHz). Added the Intel Xeon W3565 workstation processor (overclocked to 3.33 GHz). Added the Intel Xeon E5540 workstation processor (overclocked to 2.66 GHz). Added the Dual Intel Xeon E5430 workstation processor. Added the AMD Athlon II X2 220 desktop processor (overclocked to 3.26 GHz). Added the Intel Core 2 Duo E4700 desktop processor. No. of CPUs : 84 (Rev. 4.0) + 283 (Rev. 3.0)
12-08-2011	5.8	Added Dual Intel Xeon X5650 workstation processors (overclocked to 4.0 GHz). Added the Intel Core i7-2600K desktop processor. Added the Intel Core i7-930 desktop processor. Added Dual Intel Xeon E5620 workstation processors. Added AMD Phenom II X4 B50 desktop processors (overclocked to 3.8 GHz). Added the Intel Core 2 Quad Q9500 desktop processor. Added the Intel Core 2 Duo E8600 desktop processor (overclocked to 3.8 GHz). No. of CPUs : 76 (Rev. 4.0) + 283 (Rev. 3.0)
12-07-2011	5.7	Added the AMD Phenom II X4 B55 desktop processor (overclocked to 3.6 GHz). Added the Intel Core 2 Quad Q6600 desktop processor (overclocked to 3.6 GHz). Added the Intel Core 2 Quad Q6600 desktop processor (overclocked to 3.4 GHz). Added the Intel Core 2 Quad Q6600 desktop processor (overclocked to 3.3 GHz). Added the Intel Core 2 Quad Q6600 desktop processor (overclocked to 3.0 GHz). Added the Intel Core 2 Quad Q6600 desktop processor. Added the Intel Xeon E5504 workstation processor. Added the Intel Core 2 Duo E8400 desktop processor. Added the AMD Athlon 64 X2 5200+ desktop processor. Added the AMD Turion 64 X2 TL-60 mobile processor (overclocked to 2.22 GHz). Added the AMD Turion 64 X2 TL-60 mobile processor. Added the Intel Pentium 4 550 desktop processor. Added the AMD Athlon 64 X2 3800+ desktop processor. Removed the Intel Core i5-2500K desktop processor (overclocked to 5.4 GHz). Removed the Intel Core i5-2500K desktop processor (overclocked to 4.85 GHz). Removed the Intel Core 2 Quad Q6600 desktop processor (overclocked to 2.6 GHz). No. of CPUs : 69 (Rev. 4.0) + 283 (Rev. 3.0)
19-06-2011	5.6	Added the Intel Core i5-2500K desktop processor (overclocked to 5.4 GHz). Added the Intel Core i5-2500K desktop processor (overclocked to 4.85 GHz). Added the Intel Core i7-2600 desktop processor. Added the AMD Phenom II X6 1090T desktop processor. Added the Intel Core i7-860 desktop processor (overclocked to 3.3 GHz). Added the Intel Pentium E6300 desktop processor. Added the AMD Athlon II X2 220 desktop processor. Added the AMD Athlon II M320 mobile processor. No. of CPUs : 59 (Rev. 4.0) + 283 (Rev. 3.0)
25-05-2011	5.5	Added the Intel Core i7-2600K desktop processor (overclocked to 5.0 GHz). Added the Intel Core i7-2600K desktop processor (overclocked to 4.43 GHz). Added the Intel Core i7-2500K desktop processor (overclocked to 4.2 GHz). Added the Intel Core i7-920 desktop processor (overclocked to 4.2 GHz). Added the Intel Core i5-520M mobile processor (overclocked to 2.93 GHz). Added the Intel Core i5-520M mobile processor. No. of CPUs : 51 (Rev. 4.0) + 283 (Rev. 3.0)
13-05-2011	5.4	Added the Intel Core i7-2600K desktop processor (overclocked to 4.5 GHz). Added the AMD Phenom II X6 1100T desktop processor (overclocked to 4.0 GHz). Added the Intel Core i5-2400 desktop processor. Added the Intel Core 2 Duo T7300 mobile processor. Added the Intel Atom N570 mobile processor. Added the Intel Atom N455 mobile processor. Removed the Intel Core i7-2600K desktop processor. No. of CPUs : 45 (Rev. 4.0) + 283 (Rev. 3.0)
04-05-2011	5.3	Added the Intel Core i7-950 desktop processor. Added the Intel Core i7-820QM mobile processor. Added the Intel Core i5-2410M mobile processor. Added the Intel Core 2 Duo E8600 desktop processor. Added the Intel Core 2 Duo E6700 desktop processor. Added the Intel Core 2 Duo P8400 mobile processor. Added the Intel Pentium 4 2.4 GHz desktop processor. Added the improved results of the AMD Phenom II X6 1090T desktop processor (overclocked to 4.0 GHz). Corrected the results of the Intel Core i7-2630QM mobile processor. No. of CPUs : 40 (Rev. 4.0) + 283 (Rev. 3.0)
21-04-2011	5.2	Added the AMD Phenom II X6 1090T desktop processor (overclocked to 4.15 GHz). Added the Intel Core i5-750 desktop processor (overclocked to 4.2 GHz). Added the Intel Core i5-750 desktop processor (overclocked to 3.8 GHz). Added the AMD Phenom II X4 940 desktop processor (overclocked to 3.5 GHz). Added the AMD Phenom II X3 B55 desktop processor (overclocked to 4.0 GHz). Added the improved results of the AMD Phenom II X6 1055T desktop processor. No. of CPUs : 33 (Rev. 4.0) + 283 (Rev. 3.0)
14-04-2011	5.1	Added Dual Intel Xeon X5690 workstation processors (overclocked to 4.5 GHz). Added the Intel Core i7-970 desktop processor (overclocked to 4.5 GHz). Added the Intel Core i7-2600K desktop processor. Added the Intel Core i7-950 desktop processor (overclocked to 3.6 GHz). Added the AMD Phenom II X6 1090T desktop processor (overclocked to 4.0 GHz). Added the Intel Core i5-2500K desktop processor. Added the Intel Core 2 Quad Q9550 desktop processor. Added the Intel Core i7-2630QM mobile processor. Added the improved results of the AMD Phenom II X6 1055T desktop processor (overclocked to 3.5 GHz). No. of CPUs : 28 (Rev. 4.0) + 283 (Rev. 3.0)
31-03-2011	5.0	Added six new pages of results based on the new x264 HD Benchmark 4.0. Added the Intel Core i5-2500K desktop processor (overclocked to 4.5 GHz). Added the Intel Core i5-2500K desktop processor (overclocked to 4.0 GHz). Added the Intel Core i7-920 desktop processor (overclocked to 3.8 GHz). Added the Dual Intel Xeon X5550 workstation processor (overclocked to 3.06 GHz). Added the Intel Core i7-875K desktop processor (overclocked to 4.0 GHz). Added the Dual Intel Xeon X5550 workstation processor. Added the AMD Phenom II X6 1055T desktop processor (overclocked to 3.5 GHz). Added the Intel Core i7-860 desktop processor (overclocked to 3.8 GHz). Added the Intel Core i7-870 desktop processor. Added the Intel Core i7-965 Extreme Edition desktop processor. Added the AMD Phenom II X4 955 Black Edition desktop processor (overclocked to 3.5 GHz). Added the AMD Phenom II X6 1055T desktop processor. Added the Intel Core i5-750 desktop processor. Added the AMD Phenom II X4 955 Black Edition desktop processor. Added the Intel Core 2 Quad Q6600 desktop processor (overclocked to 2.6 GHz). Added the AMD Phenom X3 8650 desktop processor. Added the Intel Core 2 Duo T6400 mobile processor. Added the Intel Core 2 Solo ULV SU3500 mobile processor. Added the Intel Pentium M 725 mobile processor. Added the Intel Atom N270 mobile processor. No. of CPUs : 20 (Rev. 4.0) + 283 (Rev. 3.0)
03-03-2011	4.4	Added the AMD Phenom II X6 1055T desktop processor (overclocked to 4.0 GHz). Added the AMD Phenom II X4 B55 desktop processor (overclocked to 3.8 GHz). Added the Intel Core i3-2100 desktop processor. Added the AMD E-350 mobile processor. Added the Intel Atom D525 desktop processor. Removed the AMD Phenom II X6 1055T desktop processor (overclocked to 4.46 GHz). Removed the AMD Phenom II X6 1055T desktop processor (overclocked to 4.05 GHz). No. of CPUs : 283
08-02-2011	4.3	Added the AMD Phenom II X6 1055T desktop processor (overclocked to 3.2 GHz). Added the Intel Pentium E2180 desktop processor (overclocked to 3.2 GHz). Added the Intel Celeron SU2300 mobile processor. Added the AMD Sempron LE-1250 desktop processor (overclocked to 2.75 GHz). Added the AMD Sempron LE-1250 desktop processor. Added the improved results of the AMD Phenom II X6 1055T desktop processor. Corrected the Memory Channels specification of the Intel Core i7-2600K processor (as listed in the tables). No. of CPUs : 280
18-01-2011	4.2	Added the Dual Intel Xeon X5670 workstation processors. Added the AMD Athlon II X4 640 desktop processor. Added the Intel Core 2 Quad Q8300 desktop processor. Added the AMD Athlon 64 X2 5000+ desktop processor (overclocked to 3.2 GHz). Added the AMD Athlon 64 X2 5000+ desktop processor. No. of CPUs : 275
04-01-2011	4.1	Added the Intel Core i7-2600K desktop processor (overclocked to 4.64 GHz). Added the Intel Core i7-2600K desktop processor. Added the Intel Core i5-760 desktop processor (overclocked to 3.7 GHz). No. of CPUs : 270
28-12-2010	4.0	Added three new pages comparing the results of the unoverclocked processors, with colour-coding for different processor types. Updated and corrected various parts of the guide. No. of CPUs : 267
16-12-2010	3.8	Added the Intel Core 2 Quad Q9550 desktop processor (overclocked to 3.43 GHz). Added the AMD Athlon II X4 645 desktop processor. Added the AMD Athlon II X3 450 desktop processor. Added the AMD Phenom II X2 560 BE desktop processor. Added the Intel Pentium G6950 desktop processor. No. of CPUs : 267
09-12-2010	3.7	Added the AMD Phenom II X6 1100T BE desktop processor. Added the AMD Phenom II X4 965 BE desktop processor (overclocked to 3.94 GHz). Added the AMD Phenom II X4 965 BE desktop processor (overclocked to 3.6 GHz). Added the AMD Phenom II X3 740 BE desktop processor. Added the AMD Athlon XP 2600+ desktop processor. Added the Intel Core 2 Duo E8600 desktop processor. Added the improved results of the AMD Phenom II X4 965 BE desktop processor. Added the improved results of the Intel Core i3-530 desktop processor. Added the improved results of the Intel Core 2 Quad Q8200 desktop processor. Added the improved results of the Intel Core 2 Quad Q6600 desktop processor. Added the improved results of the Intel Core 2 Duo E8400 desktop processor. Added the improved results of the Intel Core 2 Duo E7400 desktop processor. Removed the Intel Core 2 Duo E7500 desktop processor. No. of CPUs : 262
11-11-2010	3.6	Added the AMD Phenom X4 9850 desktop processor. Added the Intel Celeron E3300 desktop processor (overclocked to 3.6 GHz). Added the Intel Pentium Dual-Core E5300 desktop processor. Added the Intel Pentium Dual-Core T2390 mobile processor. Added the AMD Athlon XP 1800+ desktop processor. No. of CPUs : 257
04-11-2010	3.5	Added the Intel Core i7-950 desktop processor (overclocked to 4.2 GHz). Added the Intel Core 2 Extreme QX9650 desktop processor (overclocked to 4.9 GHz). Added the Intel Core 2 Quad Q9550 desktop processor (overclocked to 4.0 GHz). Added the AMD Phenom II X4 20 desktop processor (overclocked to 3.54 GHz). Added the AMD Athlon 64 X2 4600+ desktop processor (overclocked to 2.57 GHz). Added the AMD Athlon MP 2800+ workstation processor (overclocked to 2.5 GHz). No. of CPUs : 252
29-10-2010	3.4	Added the Intel Core i7-975 Extreme Edition desktop processor (overclocked to 4.56 GHz). Added the AMD Phenom II X4 20 desktop processor (overclocked to 3.4 GHz). Added the Intel Core 2 Quad Q9550 desktop processor (overclocked to 3.38 GHz). Added the AMD Phenom II X3 720 desktop processor (overclocked to 3.54 GHz). Added the Intel Pentium Dual-Core E6300 desktop processor. Added the AMD Turion II P520 mobile processor. Added the Intel Core 2 Duo T5600 mobile processor. Removed the AMD Phenom II X3 720 desktop processor (overclocked to 3.5 GHz). No. of CPUs : 246
22-10-2010	3.3	Added the AMD Phenom II 42 TWKR desktop processor (overclocked to 3.6 GHz). Added the Intel Core 2 Duo E8600 desktop processor (overclocked to 5.7 GHz). Added the Intel Core i7-920 desktop processor (overclocked to 3.36 GHz). Added the AMD Athlon 64 X2 5400+ desktop processor. Added the AMD Athlon X2 4450e desktop processor. Added the improved results of the AMD Phenom II X4 940 Black Edition desktop processor. No. of CPUs : 240
14-10-2010	3.2	Added the Intel Xeon W3520 workstation processor (overclocked to 4.4 GHz). Added the Intel Xeon W3520 workstation processor (overclocked to 4.1 GHz). Added the Intel Core 2 Quad Q6600 desktop processor (overclocked to 3.83 GHz). Added the Intel Core 2 Quad Q9650 desktop processor. Added the Intel Core 2 Duo E8400 desktop processor (overclocked to 4.37 GHz). Added the AMD Athlon II X3 435 desktop processor (overclocked to 3.33 GHz). Added the improved results of the AMD Core 2 Duo E8400 desktop processor (overclocked to 4.0 GHz). Added the improved results of the Intel Core i7-720QM mobile processor (overclocked to 1.73 GHz). Removed the Intel Core 2 Quad Q6600 desktop processor (overclocked to 3.87 GHz). No. of CPUs : 235
07-10-2010	3.1	Added the improved results of the AMD Phenom II X6 1090T desktop processor (overclocked to 4.0 GHz). Added the improved results of the Intel Core i7-860 desktop processor (overclocked to 3.8 GHz). Added the AMD Phenom II X6 1090T desktop processor (overclocked to 3.73 GHz). Added the AMD Athlon II X3 435 desktop processor. Added the Intel Core i5-540M mobile processor (overclocked to 2.8 GHz). Added the AMD Athlon II M300 mobile processor. No. of CPUs : 230
22-09-2010	3.0	Added the Intel Core i5-750 desktop processor (overclocked to 3.5 GHz). Added the AMD Phenom II X4 955 BE desktop processor (overclocked to 3.8 GHz). Added the AMD Phenom II X4 B25 desktop processor (overclocked to 3.6 GHz). Added the AMD Turion II Ultra M600 mobile processor. Added the Intel Pentium DC P6000 mobile processor. Added the improved results of the Intel Core i7-930 desktop processor (overclocked to 4.2 GHz). No. of CPUs : 226
07-09-2010	2.9	Added the Intel Xeon X5680 workstation processor (overclocked to 4.24 GHz). Added the Intel Core i7-920 desktop processor (overclocked to 3.8 GHz). Added the Intel Core 2 Quad Q8400 desktop processor (overclocked to 3.4 GHz). Added the Intel Core 2 Quad Q8200 desktop processor (overclocked to 3.15 GHz). Added the Intel Core 2 Duo E7500 desktop processor (overclocked to 4.0 GHz. Added the Intel Pentium D 945 desktop processor. Removed the Intel Core 2 Quad Q8400 desktop processor (overclocked to 3.48 GHz). No. of CPUs : 221
01-09-2010	2.8	Added the Intel Xeon X5570 workstation processor (overclocked to 3.2 GHz). Added the AMD Phenom II X6 1055T desktop processor (overclocked to 3.36 GHz). Added the Intel Core 2 Quad Q9400 desktop processor (overclocked to 3.9 GHz. Added the Intel Xeon E5520 workstation processor (overclocked to 2.5 GHz). Added the AMD Phenom II X4 20 desktop processor (overclocked to 3.6 GHz). Added the Intel Core 2 Quad Q9000 mobile processor. Added the Intel Core 2 Duo E6420 desktop processor. Added the improved results of the Intel Core i7-870 desktop processor (overclocked to 3.76 GHz). Added the improved results of the Intel Core i7-920 desktop processor (overclocked to 3.6 GHz). No. of CPUs : 216
21-08-2010	2.7	Added the Intel Core i7-870 desktop processor (overclocked to 3.76 GHz). Added the Intel Core 2 Quad Q8400 desktop processor (overclocked to 3.48 GHz). Added the Intel Core 2 Duo E6420 desktop processor (overclocked to 3.33 GHz). Added the AMD Phenom II X2 545 desktop processor. Added the Intel Core 2 Duo E6300 desktop processor. Added the Intel Pentium Dual-Core E2160 desktop processor. Added the Intel Pentium 4 630 desktop processor. Added the Intel Pentium III-M 1.13 GHz mobile processor. Added the improved results of the Intel Core i7-870 desktop processor. Added the improved results of the AMD Athlon 64 X2 5200+ desktop processor. No. of CPUs : 209
17-08-2010	2.6	Added the Intel Core 2 Quad Q8400 desktop processor (overclocked to 3.6 GHz). Added the Intel Core 2 Quad Q9400 desktop processor (overclocked to 3.2 GHz). Added the Intel Xeon E5504 workstation processor. Added the Intel Core 2 Duo T7200 mobile processor. Added the Intel Pentium 4E 3.0 GHz desktop processor. Added the AMD Sempron 3100+ desktop processor (overclocked to 2.2 GHz). No. of CPUs : 201
06-08-2010	2.5	Added Dual Intel Xeon X5650 workstation processors. Added the Intel Core i5-750 desktop processor (overclocked to 4.0 GHz). Added the Intel Core i7-860 desktop processor (overclocked to 3.6 GHz). Added the Intel Core i5-750 desktop processor (overclocked to 2.73 GHz). Added the AMD Opteron 290 workstation processor. Added the AMD Turion 64 X2 TL-60 mobile processor (overclocked to 2.2 GHz). Added the improved results of the AMD Phenom II X6 1090T desktop processor (overclocked to 4.0 GHz). Added the improved results of the Intel Core i5-750 desktop processor (overclocked to 3.2 GHz). Removed the Intel Core i7-860 desktop processor (overclocked to 3.5 GHz). Removed the Intel Core i5-750 desktop processor (overclocked to 2.87 GHz). No. of CPUs : 195
29-07-2010	2.4	Added the Intel Core i7-980X desktop processor (overclocked to 4.5 GHz). Added the Intel Core i7-980X desktop processor (overclocked to 4.2 GHz). Added the Intel Core i3-550 desktop processor. Added the AMD Opteron 275 workstation processor. Added the AMD Athlon 64 X2 5200+ desktop processor. Added the Intel Celeron E1400 desktop processor. Added the improved results of the AMD Phenom II X6 1055T desktop processor (overclocked to 3.5 GHz). No. of CPUs : 191
20-07-2010	2.3	Added the Intel Core i7-980X desktop processor (overclocked to 4.7 GHz). Added the AMD Athlon II X4 620 desktop processor (overclocked to 3.1 GHz). Added the AMD Phenom II X3 710 desktop processor. Added the Intel Core 2 Duo E7200 desktop processor (overclocked to 3.33 GHz). Added the AMD Athlon 64 X2 BE-2300 desktop processor (overclocked to 2.33 GHz). Added the Intel Pentium Dual-Core E2200 desktop processor. Added the improved results of the Intel Core i7-920 desktop processor (overclocked to 4.0 GHz). Added the improved results of the Intel Core i5-750 desktop processor. Added the improved results of the Intel Core 2 Quad Q9400 desktop processor. Added the improved results of the AMD Athlon II X2 240 desktop processor. Removed the Intel Core 2 Quad Q8200 desktop processor (overclocked to 2.58 GHz). No. of CPUs : 185
09-07-2010	2.2	Added the Intel Xeon X5667 workstation processor (overclocked to 4.7 GHz). Added the AMD Phenom II X4 1090T desktop processor (overclocked to 4.62 GHz). Added the AMD Phenom II X4 1090T desktop processor (overclocked to 4.21 GHz). Added the AMD Phenom II X4 1090T desktop processor (overclocked to 3.8 GHz). Added the Intel Core 2 Quad Q9550 desktop processor. Added the AMD Phenom II X4 905e desktop processor. Added the Intel Core Duo T2500 mobile processor. Added the improved results of the Intel Core i5-750 desktop processor (overclocked to 3.8 GHz). No. of CPUs : 180
30-06-2010	2.1	Added the Intel Xeon W5580 workstation processor (overclocked to 3.33 GHz). Added the Intel Core i7-930 desktop processor (overclocked to 3.5 GHz). Added the AMD Phenom II X4 810 desktop processor (overclocked to 3.7 GHz). Added the AMD Phenom II X4 810 desktop processor (overclocked to 3.4 GHz). Added the Intel Core 2 Duo E4700 desktop processor (overclocked to 3.2 GHz). Added the AMD Athlon II X2 240 desktop processor. Added the Intel Core 2 Duo T7250 mobile processor. No. of CPUs : 173
24-06-2010	2.0	Added the Intel Core i7-920 desktop processor (overclocked to 4.6 GHz). Added the Intel Core i5-750 desktop processor (overclocked to 3.6 GHz). Added the AMD Phenom II X4 B55 desktop processor (overclocked to 4.13 GHz). Added the Intel Core i5-750 desktop processor (overclocked to 3.2 GHz). Added the Intel Core i3-530 desktop processor (overclocked to 4.6 GHz). Added the Intel Core 2 Quad Q9450 desktop processor (overclocked to 3.6 GHz). Added the Intel Celeron E3200 desktop processor (overclocked to 3.6 GHz). No. of CPUs : 166
16-06-2010	1.9	Added the Intel Xeon 5667 workstation processor (overclocked to 4.5 GHz). Added the Intel Core i7-975 Extreme Edition desktop processor (overclocked to 4.3 GHz). Added the Intel Core i5-750 desktop processor (overclocked to 2.87 GHz). Added the AMD Phenom II X4 B50 desktop processor. Added the AMD Phenom II X3 720 desktop processor (overclocked to 3.3 GHz). Added the AMD Athlon II X4 620 desktop processor. Added the Intel Celeron E3200 desktop processor (overclocked to 4.14 GHz). Added the Intel Pentium D 925 desktop processor. No. of CPUs : 159
07-06-2010	1.8	Added the Intel Core i7-920 desktop processor (overclocked to 4.21 GHz). Added the Intel Core i7-860 desktop processor (overclocked to 3.8 GHz). Added the AMD Phenom II X3 720 desktop processor (overclocked to 3.8 GHz). Added the Intel Core i3-540 desktop processor. Added the Intel Pentium Dual-Core T4400 mobile processor. Added the Intel Pentium D 840 desktop processor. No. of CPUs : 151
27-05-2010	1.7	Added the Intel Core i7-980X desktop processor (overclocked to 4.15 GHz). Added the Intel Core i7-980X desktop processor (overclocked to 4.0 GHz). Added the Intel Core i7-980X desktop processor (overclocked to 3.58 GHz). Added the Intel Core i7-980X desktop processor (overclocked to 3.43 GHz). Added the Intel Core i7-980X desktop processor. Added the Intel Core 2 Quad Q9400 desktop processor (overclocked to 3.66 GHz). Added the AMD Phenom II X4 20 desktop processor. No. of CPUs : 145
18-05-2010	1.6	Added the Intel Core i7-930 desktop processor (overclocked to 4.2 GHz). Added the Intel Core i7-930 desktop processor (overclocked to 4.0 GHz). Added the AMD Phenom II X4 B50 desktop processor (overclocked to 3.7 GHz) Added the AMD Phenom II X4 955 BE desktop processor (overclocked to 3.5 GHz). Added the Intel Core 2 Duo E8500 desktop processor (overclocked to 4.2 GHz). Added the AMD Phenom X5 9750 desktop processor. Added the AMD Athlon II X2 245 desktop processor (overclocked to 3.62 GHz). Added the Intel Pentium M 1.4 mobile processor. Added the improved results of the Intel Core i7-920 desktop processor (overclocked to 2.8 GHz). Added the improved results of the Intel Core 2 Duo E8400 desktop processor (overclocked to 3.6 GHz). No. of CPUs : 138
06-05-2010	1.5	Added the AMD Phenom II X6 1090T desktop processor (overclocked to 4.0 GHz). Added the Intel Core i7-860 desktop processor (overclocked to 3.8 GHz). Added the AMD Phenom II X6 1090T desktop processor. Added the AMD Phenom II X4 965 BE desktop processor. Added the Intel Core 2 Quad Q8400 desktop processor (overclocked to 3.9 GHz). Added the Intel Core 2 Quad Q8400 desktop processor. Added the improved results of the AMD Phenom II X6 1055T desktop processor. No. of CPUs : 130
28-04-2010	1.4	Added the AMD Phenom II X6 1055T desktop processor (overclocked to 4.46 GHz). Added the AMD Phenom II X6 1055T desktop processor (overclocked to 4.3 GHz). Added the AMD Phenom II X6 1055T desktop processor (overclocked to 4.05 GHz). Added the AMD Phenom II X6 1055T desktop processor (overclocked to 3.5 GHz). Added the AMD Phenom II X6 1055T desktop processor. Added the Intel Core i7-870 desktop processor. No. of CPUs : 124
20-04-2010	1.3	Added the Intel Core 2 Duo E7400 desktop processor. Added the Intel Core 2 Duo T9400 mobile processor. Added the Intel Core 2 Duo E6400 desktop processor. Added the Intel Celeron T1600 mobile processor. Added the Intel Pentium 4 2.4 desktop processor. Added the Intel Pentium III 1.4S desktop processor. Added the improved results of the Intel Core i7-920 processor (overclocked to 4.0 GHz). Added the improved results of the AMD Phenom II X4 965 BE processor (overclocked to 4.0 GHz). Added the improved results of the AMD Phenom II X4 945 processor. Added the improved results of the Intel Core i3-530 processor. Added the improved results of the AMD Phenom II X2 555 processor. No. of CPUs : 118
15-04-2010	1.2	Added the AMD Phenom II X4 965 BE desktop processor (overclocked to 4.1 GHz). Added the AMD Phenom II X4 965 BE desktop processor (overclocked to 4.0 GHz). Added the Intel Core 2 Quad Q6600 desktop processor (overclocked to 3.87 GHz). Added the Intel Core i7-930 desktop processor (overclocked to 2.94 GHz). Added the Intel Core 2 Quad Q8200 desktop processor. Added the improved results of the Intel Core 2 Quad Q6600 desktop processor. Added the Intel Atom N280 netbook processor. No. of CPUs : 112
09-04-2010	1.1	Added the Intel Xeon X5680 workstation processor (overclocked to 4.32 GHz). Added the AMD Phenom II X4 965 BE desktop processor (overclocked to 3.8 GHz). Added the Intel Core i7-720QM mobile processor (overclocked to 1.73 GHz). Added the Intel Core Duo T2400 mobile processor. Added the AMD Athlon XP 2500+ desktop processor. Added the Intel Pentium M 1.6 mobile processor. No. of CPUs : 106
29-03-2010	1.0	Migrated the previous results from the x264 HD Benchmark 3.0 guide. Added the Intel Core i7-920 desktop processor (overclocked to 2.8 GHz). Added the AMD Phenom X4 9550 desktop processor (overclocked to 2.64 GHz). Added the Intel Core 2 Duo E7300 desktop processor (overclocked to 3.8 GHz). Added the AMD Phenom X4 9550 desktop processor. Added the Intel Core 2 Duo E7500 desktop processor. Added the Intel Pentium Dual-Core E5400 desktop processor. Added the Intel Core 2 Duo P8400 mobile processor. Added the AMD Athlon 64 X2 4200+ desktop processor. Added the Intel Core 2 Duo T5500 mobile processor. Added the improved results of the Intel Atom N270 mobile processor. Removed the AMD Phenom II X4 B55 desktop processor (overclocked to 3.2 GHz). No. of CPUs : 100

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