In terms of overall gaming performance, the graphical capabilities of the AMD Radeon HD 7850 PowerColor PCS+ 2GB Edition are marginally better than the AMD Radeon HD 7850 XFX Ultra OC Edition.

The HD 7850 has a 25 MHz higher core clock speed and the same number of Texture Mapping Units as the HD 7850. This results in the HD 7850 providing 1.6 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 25 MHz higher core clock speed than the HD 7850 and the same number of Render Output Units. This results in the HD 7850 providing 0.8 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 7850, and so they are likely to have similar driver support for optimizing performance when running the latest games.

The HD 7850 has 1024 MB more video memory than the HD 7850, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the HD 7850 also has superior memory performance overall.

The HD 7850 has 3.2 GB/sec greater memory bandwidth than the HD 7850, which means that the memory performance of the HD 7850 is marginally better than the HD 7850.

Both the Radeon HD 7850 PowerColor PCS+ 2GB Edition and the Radeon HD 7850 XFX Ultra OC Edition have 1024 Shader Processing Units. Having the same number of SPUs and using the same architecture means that the performance they offer can be compared by looking at the memory bandwidth, Texture and Pixel Rates. In this case, the HD 7850 has 1.6 GTexel/s better Texture Fill Rate, 0.8 GPixel/s better Pixel Fill Rate, and 3.2 GB/sec greater memory bandwidth, so should have a marginally faster performance than the HD 7850.

We would recommend a PSU with at least 500 Watts for the HD 7850, but we do not have a recommended PSU wattage for the HD 7850.