For those who were wondering about GeForce GTX 650 and GTX 660 performance in comparison to Radeon HD 7750 and HD 7850, I have some interesting charts.
Before going into details, those charts are based on official information from NVIDIA, which I found in the deepest and darkest place on the Internet. Anyway, we should treat them with a grain of salt. Not to mention, the games they chose are more in NVIDIA’s favour (that’s why we won’t see Metro 2033 here).
All tests were performed with 1920×1080 resolution. The data I have does not say if it’s with anti-aliasing enabled, but I assume it’s not.
GeForce GTX 660 / GeForce GTX 560 / GeForce GTX 460
According to this chart, GeForce GTX 660 would be on average 62% faster than GeForce GTX 460, while 28% than GTX 560. When you look at the bars you will notice that the newest Kepler generation brings more performance than previous refreshed Fermi GPU for mid-range segment.
GeForce GTX 660 / Radeon HD 7850
The scale goes down as we compare it to its counterpart from AMD – Radeon HD 7850. The raw data says that average gain of performance is 30%, but if we remove Diablo 3 and add few AMD favourites we can still go to 15-20%.
GeForce GTX 650 / GeForce GTS 450
This chart shows the comparison of GTS 450 and GTX 650. The GK107-based GTX 650 would be 23% faster. But NVIDIA chose GTS 450 for a reason, it’s rather a slow card. It would be more interesting if they chose GTX 550 Ti. I guess we will have to wait for that.
NVIDIA claims that GeForce GTX 650 will be 20% faster than GTS 450, while consuming around 50% less power. NVIDIA engineers focused here on performance per watt, while this card would consume only 64W.
GeForce GTX 650 / Radeon HD 7750
And finally GTX 650 to HD 7750. According to this chart GTX 650 is 21% faster than Radeon HD 7750.