I happened to look at this review its quite interesting what a $200 cheaper video card can do... http://www.theinquirer.net/?article=32016
3DMark05 Scores
Nvidia 7900GT 450/1320mhz=7809
Nvidia 7900GTX 650/1600mhz=10660
Evga 7900GT Signature 600/1600mhz=9920
Evga 7900GT Signature 665/1850mhz=10891
3DMark06 Scores
Nvidia 7900GT 450/1320mhz=4062
Nvidia 7900GTX 650/1600mhz=5273
Evga 7900GT Signature 600/1600mhz=4994
Evga 7900GT Signature 665/1850=5403
Results
Doom 3 shows EVGA 7900 GT at 665 MHz core and 1850 MHz clock can reach the speed of Geforce 7900 GTX. It stays a frame or two slower but it can match it at 20x15. Overclocked signature card is twenty frames faster in 20x15 from the non overclock default Nvidia 7900 GT. Even when you turn the FSAA and Aniso on you can clearly see that EVGA 7900 GT signature edition outperforms 7900 GTX. It is not much but it can get up to three frames faster.
Far Cry with 4X FSAA and 8X aniso shows that the overclocked signature card can stay up to two frames faster than the default clocked 7900 GTX. At 2048x1536 overclocked signature card is 57 percent faster than 7900 GT default.
In Quake 4 overclocked signature card stays on a top but just for a frame or two. The 600 / 1800 MHz EVGA signature card is as always just slightly slower up to five frames in this case.
As this card deserves at least 4X FSAA and 8X Anisotropic filtering you can see that it really fits it in Quake 4. It is up to six frames faster than 7900 GTX at default clock. The overclocked Signature card is almost 50 percent faster than the default 7900 GT.
FEAR really likes the overclocked card and runs up to 23 frames faster than the default 7900 GT card. Once you turn FSAA 4X and 16X Aniso you can get up to 25 frames or 25 percent faster performance. It always outperforms 7900 GTX card.
Battlefield 2 was a mystery to us as it actually was running slower than the default clocked 7900 GT card. Once you turn the FSAA and Aniso on the 7900GT Signature EVGA card overclocked to 665/1850MHz is again the king of the hill. It runs up to 20 frames faster than the default card.
Serious Sam 2 can run up to 34 frames or twenty seven per cent faster. The difference can get even more drastic when you turn the FSAA and Aniso on. It runs up to 33 per cent faster and can score playable 60 frames per second even at 2048x1536 resolution. It is almost always faster than 7900 GTX.
In 3Dmark03 the signature card is almost 4000 marks faster than the default 7900 GT, while the overclocked card is almost 6000 marks faster, it is even 800 marks faster than the 7900 GTX. It runs 2100 marks faster than the default 7900 GT while the overclocked card runs 3100 marks faster. The overclocked card is some 800 points faster than 7900 GTX.
Overclocked card owns 3Dmark05 score. It is 200 points faster than much more expensive 7900 GTX card, and 3000 marks faster than the default clocked 7900 GT card.
In 3Dmark06 signature card runs 930 marks faster, some 22 percent faster than the default clocked 7900 GT. The overclocked signature card is 200 marks faster than 7900 GTX and 1350 marks or 25 percent faster than 7900 GT default.
Overclocked card wins all testes including Shader model 2.0 and set of 3.0 and HDR tests.
3DMark05 Scores
Nvidia 7900GT 450/1320mhz=7809
Nvidia 7900GTX 650/1600mhz=10660
Evga 7900GT Signature 600/1600mhz=9920
Evga 7900GT Signature 665/1850mhz=10891
3DMark06 Scores
Nvidia 7900GT 450/1320mhz=4062
Nvidia 7900GTX 650/1600mhz=5273
Evga 7900GT Signature 600/1600mhz=4994
Evga 7900GT Signature 665/1850=5403
Results
Doom 3 shows EVGA 7900 GT at 665 MHz core and 1850 MHz clock can reach the speed of Geforce 7900 GTX. It stays a frame or two slower but it can match it at 20x15. Overclocked signature card is twenty frames faster in 20x15 from the non overclock default Nvidia 7900 GT. Even when you turn the FSAA and Aniso on you can clearly see that EVGA 7900 GT signature edition outperforms 7900 GTX. It is not much but it can get up to three frames faster.
Far Cry with 4X FSAA and 8X aniso shows that the overclocked signature card can stay up to two frames faster than the default clocked 7900 GTX. At 2048x1536 overclocked signature card is 57 percent faster than 7900 GT default.
In Quake 4 overclocked signature card stays on a top but just for a frame or two. The 600 / 1800 MHz EVGA signature card is as always just slightly slower up to five frames in this case.
As this card deserves at least 4X FSAA and 8X Anisotropic filtering you can see that it really fits it in Quake 4. It is up to six frames faster than 7900 GTX at default clock. The overclocked Signature card is almost 50 percent faster than the default 7900 GT.
FEAR really likes the overclocked card and runs up to 23 frames faster than the default 7900 GT card. Once you turn FSAA 4X and 16X Aniso you can get up to 25 frames or 25 percent faster performance. It always outperforms 7900 GTX card.
Battlefield 2 was a mystery to us as it actually was running slower than the default clocked 7900 GT card. Once you turn the FSAA and Aniso on the 7900GT Signature EVGA card overclocked to 665/1850MHz is again the king of the hill. It runs up to 20 frames faster than the default card.
Serious Sam 2 can run up to 34 frames or twenty seven per cent faster. The difference can get even more drastic when you turn the FSAA and Aniso on. It runs up to 33 per cent faster and can score playable 60 frames per second even at 2048x1536 resolution. It is almost always faster than 7900 GTX.
In 3Dmark03 the signature card is almost 4000 marks faster than the default 7900 GT, while the overclocked card is almost 6000 marks faster, it is even 800 marks faster than the 7900 GTX. It runs 2100 marks faster than the default 7900 GT while the overclocked card runs 3100 marks faster. The overclocked card is some 800 points faster than 7900 GTX.
Overclocked card owns 3Dmark05 score. It is 200 points faster than much more expensive 7900 GTX card, and 3000 marks faster than the default clocked 7900 GT card.
In 3Dmark06 signature card runs 930 marks faster, some 22 percent faster than the default clocked 7900 GT. The overclocked signature card is 200 marks faster than 7900 GTX and 1350 marks or 25 percent faster than 7900 GT default.
Overclocked card wins all testes including Shader model 2.0 and set of 3.0 and HDR tests.