In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GTX 275 SLI are significantly better than the Nvidia GeForce GTX 750 EVGA Superclocked 1GB Edition.

The GTX 750 has a 582 MHz higher core clock speed than the GTX 275, but the GTX 275 has 128 more Texture Mapping Units than the GTX 750. As a result, the GTX 275 exhibits a 62.4 GTexel/s better Texture Fill Rate than the GTX 750. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The GTX 750 has a 582 MHz higher core clock speed than the GTX 275, but the GTX 275 has 40 more Render Output Units than the GTX 750. As a result, the GTX 275 exhibits a 16 GPixel/s better Pixel Fill Rate than the GTX 750. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The GTX 750 was released over three years more recently than the GTX 275, and so the GTX 750 is likely to have far better driver support, meaning it will be much more optimized and ultimately superior to the GTX 275 when running the latest games.

The GTX 275 has 768 MB more video memory than the GTX 750, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the GTX 275 also has superior memory performance overall.

The GTX 275 has 173.8 GB/sec greater memory bandwidth than the GTX 750, which means that the memory performance of the GTX 275 is massively better than the GTX 750.

The GeForce GTX 275 SLI has 480 Shader Processing Units and the GeForce GTX 750 EVGA Superclocked 1GB Edition has 512. However, the actual shader performance of the GTX 275 is 304 and the actual shader performance of the GTX 750 is 894. The GTX 750 having 590 better shader performance is not particularly notable, as altogether the GTX 275 performs better when taking into account other relevant data.

The GTX 750 transistor size technology is 27 nm (nanometers) smaller than the GTX 275. This means that the GTX 750 is expected to run slightly cooler and achieve higher clock frequencies than the GTX 275.

The GeForce GTX 275 SLI requires 430 Watts to run and the GeForce GTX 750 EVGA Superclocked 1GB Edition requires 55 Watts. We would recommend a PSU with at least 750 Watts for the GTX 275 and a PSU with at least 300 Watts for the GTX 750. The GTX 275 requires 375 Watts more than the GTX 750 to run. The difference is significant enough that the GTX 275 may have an adverse affect on your yearly electricity bills in comparison to the GTX 750.