In terms of overall gaming performance, the graphical capabilities of the AMD Radeon HD 7850 Direct CU II TOP are marginally better than the AMD Radeon HD 7850 XFX Ultra OC Edition.

The HD 7850 and the HD 7850 have both the same core clock speed and the same Texture Fill Rate. 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 and the HD 7850 have both the same core clock speed and the same Pixel Fill Rate. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

Both the Radeon HD 7850 XFX Ultra OC Edition and the Radeon HD 7850 Direct CU II TOP were released at the same time, so are likely to be quite similar.

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 6.4 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 XFX Ultra OC Edition and the Radeon HD 7850 Direct CU II TOP 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, although the GPUs are very similar in performance, the HD 7850 takes the edge.

We would recommend a PSU with at least 500 Watts for the HD 7850.