Tech ARP - Intel Core i7 D0 Core Performance Advantage Revealed Rev. 2.0

	Date :	08 January 2010
	Manufacturer :	N/A
	Source :	N/A
	Category :	CPU
	Author :	Dr. Adrian Wong
	Revision :	2.0
	Forum Link :	Discuss here !
	Views :	100902

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Intel Core i7 D0 Core Performance Advantage Revealed Rev. 2.0

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The Processors

Let's start by listing the processors we will be testing, and their specifications. For ease of comparison, we will not be listing their processor names in the article. Instead, we will only list their core and QPI clock speeds, and core steppings.


Processor	Cores	Threads	L1 Cache	L2 Cache	L3 Cache	QPI Speed	BCLK Multiplier	Clock Frequency
Core i7-965 Extreme Edition	4	8	32 KB x 4	256 KB x 4	8 MB	6.4 GT/s	24x	3.20 GHz
Core i7-960 *	4	8	32 KB x 4	256 KB x 4	8 MB	4.8 GT/s	24x	3.20 GHz
Core i7-950	4	8	32 KB x 4	256 KB x 4	8 MB	4.8 GT/s	23x	3.06 GHz
Core i7-920	4	8	32 KB x 4	256 KB x 4	8 MB	4.8 GT/s	20x	2.66 GHz
For more specifications, take a look at our Desktop CPU Comparison Guide.

* Note : While the Core i7-965 EE and the Core i7-960 have the same clock speed, they have different QPI (QuickPath Interconnect) speeds. The Core i7-965 Extreme Edition has a QPI speed of 6.4 GT/s while the Core i7-960 has a QPI speed of 4.8 GT/s. To allow for a direct comparison with the Core i7-965 EE, we boosted the Core i7-960's QPI speed to 6.4 GT/s.

General Specifications

As a quick reference, here are the general specifications of the Core i7-900 series of processors :

Code Name	• Bloomfield XE (Extreme Edition versions) • Bloomfield
Core Stepping	• C0 (Core i7-965 EE, Core i7-940, Core i7-920) • D0 (Core i7-975 EE, Core i7-960, Core i7-950, Core i7-920)
Socket	• LGA1366
Transistor Count	• 731 Million
Fabrication Process	• 45 nanometer high-k
Die Size	• 263 mm³
Processing Cores	• 4 Cores
# Of Threads	• 8 Threads
Internal Base Clock	• 133 MHz
L1 Cache	• 32 KB x 4
L2 Cache	• 256 KB x 4
L3 Cache	• 8 MB shared
VID Voltage Range	• 0.80 V minimum • 1.375 V maximum
Maximum Current	• 145 A
Thermal Design Power	• 130 W
Maximum Operating Temperature	• 67.9 °C
Memory Support	• DDR3-1333 (Unofficial) • DDR3-1066 • DDR3-800
Memory Voltage Range	• 1.425 V minimum • 1.575 V maximum
Supported Features	• Enhanced Intel Speedstep Technology • Intel EM64T • Intel Virtualization Technology • Intel Turbo Mode Technology • SSE 4.2 • Enhanced Halt State (C1E) • Execute Disable Bit (XD Bit) • Intel Thermal Monitor 2

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Page	Topic
1	• Introduction • What Is A Core Stepping?
2	• What's New In The D0 Stepping? • It Is Also Faster!
3	• The Processors • General Specifications
4	• Testing The Intel Core i7 Processors
5	• Left 4 Dead Single Core Results
6	• Left 4 Dead Multi Core Results
7	• Crysis Warhead Benchmark Results
8	• CINEBENCH R10 Benchmark Results
9	• x264 HD Benchmark 3.0 Results
10	• Super PI Benchmark Results
11	• Conclusion

<<< What's New In The D0 Stepping?, It Is Also Faster! : Previous Page | Next Page : Testing The Intel Core i7 Processors >>>

< What's New In The D0 Stepping?, It Is Also Faster! : Previous Page

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