In terms of overall gaming performance, the graphical capabilities of the AMD Radeon HD 6670 v2 Sapphire 1GB Edition are noticeably better than the Nvidia GeForce GT 730 v3 Gigabyte 2GB Edition.

The HD 6670 has a 100 MHz higher core clock speed and 8 more Texture Mapping Units than the GT 730. This results in the HD 6670 providing 8 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 6670 has a 100 MHz higher core clock speed and 4 more Render Output Units than the GT 730. This results in the HD 6670 providing 3.6 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 GT 730 was released over three years more recently than the HD 6670, and so the GT 730 is likely to have far better driver support, meaning it will be much more optimized and ultimately superior to the HD 6670 when running the latest games.

The GT 730 has 1024 MB more video memory than the HD 6670, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the GT 730 also has superior memory performance overall.

The GT 730 has 3.2 GB/sec greater memory bandwidth than the HD 6670, which means that the memory performance of the GT 730 is marginally better than the HD 6670.

The Radeon HD 6670 v2 Sapphire 1GB Edition has 480 Shader Processing Units and the GeForce GT 730 v3 Gigabyte 2GB Edition has 96. However, the actual shader performance of the HD 6670 is 192 and the actual shader performance of the GT 730 is 134. The HD 6670 having 58 better shader performance and an altogether better performance when taking into account other relevant data means that the HD 6670 delivers a marginally smoother and more efficient experience when processing graphical data than the GT 730.

The Radeon HD 6670 v2 Sapphire 1GB Edition requires 66 Watts to run and the GeForce GT 730 v3 Gigabyte 2GB Edition requires 49 Watts. We would recommend a PSU with at least 400 Watts for the HD 6670 and a PSU with at least 300 Watts for the GT 730. The HD 6670 requires 17 Watts more than the GT 730 to run. The difference is not significant enough for the HD 6670 to have a noticeably larger impact on your yearly electricity bills than the GT 730.