In terms of overall gaming performance, the graphical capabilities of the AMD Radeon HD 7850 XFX Ultra OC Edition are massively better than the AMD Radeon HD 6750 v2 PowerColor 1GB Edition.

The HD 7850 has a 275 MHz higher core clock speed and 28 more Texture Mapping Units than the HD 6750. This results in the HD 7850 providing 37.2 GTexel/s better texturing performance. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The HD 7850 has a 275 MHz higher core clock speed and 16 more Render Output Units than the HD 6750. This results in the HD 7850 providing 20 GPixel/s better pixeling performance. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The HD 7850 was released less than a year after the HD 6750, and so they are likely to have similar driver support for optimizing performance when running the latest games.

The Radeon HD 6750 v2 PowerColor 1GB Edition and the Radeon HD 7850 XFX Ultra OC Edition have the same amount of video memory, but are likely to provide slightly different experiences when displaying game textures at high resolutions.

The HD 7850 has 128 GB/sec greater memory bandwidth than the HD 6750, which means that the memory performance of the HD 7850 is massively better than the HD 6750.

The Radeon HD 6750 v2 PowerColor 1GB Edition has 720 Shader Processing Units and the Radeon HD 7850 XFX Ultra OC Edition has 1024. However, the actual shader performance of the HD 6750 is 252 and the actual shader performance of the HD 7850 is 849. The HD 7850 having 597 better shader performance and an altogether better performance when taking into account other relevant data means that the HD 7850 delivers a massively smoother and more efficient experience when processing graphical data than the HD 6750.

The HD 7850 transistor size technology is 12 nm (nanometers) smaller than the HD 6750. This means that the HD 7850 is expected to run slightly cooler and achieve higher clock frequencies than the HD 6750.

The Radeon HD 6750 v2 PowerColor 1GB Edition requires 86 Watts to run but there is no entry for the Radeon HD 7850 XFX Ultra OC Edition. We would recommend a PSU with at least 450 Watts for the HD 6750 and a PSU with at least 500 Watts for the HD 7850. The HD 7850 has been recommended a PSU with 50 Watts more than the HD 6750. The difference is significant enough that the HD 7850 may have a slight adverse affect on your yearly electricity bills in comparison to the HD 6750.