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Specifications
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Here are the NVIDIA GeForce GTX 550 Ti's full specifications, compared to the GeForce GTX 560 Ti and the older GeForce GTX 460 and GeForce GTS 450 cards :
Specifications |
GeForce |
GeForce |
GeForce |
GeForce |
GPU Model |
GF114 |
GF116 |
GF104 |
GF106 |
Fabrication Process |
40 nm |
40 nm |
40 nm |
40 nm |
Transistor Count |
1.95 Billion |
1.17 Billion |
1.95 Billion |
1.17 Billion |
CUDA Cores |
384 |
192 |
336 |
192 |
Texture Units |
64 |
32 |
56 |
32 |
ROP Units |
32 |
24 |
32 |
16 |
Graphics Clock |
822 MHz |
900 MHz |
675 MHz |
783 MHz |
Processor Clock |
1645 MHz |
1800 MHz |
1350 MHz |
1566 MHz |
Texture Fill Rate |
52,608 MTexels/s |
28,800 MTexels/s |
37,800 MTexels/s |
25,056 MTexels/s |
Pixel Fill Rate |
26,304 MPixels/s |
21,600 MPixels/s |
21,600 MPixels/s |
12,528 MPixels/s |
Graphics Memory Size |
1024 MB |
1024 MB |
1024 MB |
1024 MB |
Graphics Memory Type |
GDDR5 |
GDDR5 |
GDDR5 |
GDDR5 |
Graphics Memory Interface |
256-bits |
192-bits |
256-bits |
128-bits |
Graphics Memory Clock |
1002 MHz |
1026 MHz |
900 MHz |
902 MHz |
Graphics Memory Data Rate |
4008 MHz |
4104 MHz |
3600 MHz |
3608 MHz |
Graphics Memory Bandwidth |
128.3 GB/s |
98.5 GB/s |
115.2 GB/s |
57.7 GB/s |
Form Factor |
Dual Slot |
Dual Slot |
Dual Slot |
Dual Slot |
Power Connectors |
6-pin + 6-pin |
6-pin |
6-pin + 6-pin |
6-pin |
Thermal Power Design (TDP) |
170 Watts |
116 Watts |
160 Watts |
106 Watts |
Output Options |
2 x Dual-Linked DVI-I |
2 x Dual-Linked DVI-I |
2 x Dual-Linked DVI-I |
2 x Dual-Linked DVI-I |
For more specifications, please take a look at the Desktop Graphics Card Comparison Guide.
If you compare the specifications of the four cards above, it is obvious that the GeForce GTX 550 Ti is actually between the GeForce GTX 460 and the GeForce GTS 450 in performance.
Overclockability
According to NVIDIA, transistor-level improvements in the GF116 GPU allowed for a drastic increase in clock speed, with plenty of headroom left for overclocking. Well, most of it went into the new stock clock speed of 900 MHz, because NVIDIA is quoting only an overclocking headroom of 100 MHz to 1 GHz.
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In fact, most of their partners who are coming out with factory-overclocked cards can't seem to do better than 1 GHz.
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In other words, the GeForce GTX 550 Ti is pretty much maxed out, despite what NVIDIA claims. The quoted headroom of 100 MHz or just 11 % is barely enough to account for variations in voltage and temperature. Realistically, you can expect to overclock the GeForce to 1 GHz. Anything more is pure luck.
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