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Gaming Performance Comparison
In terms of overall gaming performance, the graphical capabilities of the AMD Radeon HD 7970 GHz Edition are marginally better than the Nvidia GeForce GTX 770.
The GeForce GTX 770 has a 46 MHz higher core clock speed and the same number of Texture Mapping Units as the HD 7970. This results in the GeForce GTX 770 providing 5.9 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 GeForce GTX 770 has a 46 MHz higher core clock speed than the HD 7970 and the same number of Render Output Units. This results in the GeForce GTX 770 providing 1.5 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 GeForce GTX 770 was released less than a year after the HD 7970, and so they are likely to have similar driver support for optimizing performance when running the latest games.
Both GPUs exhibit very powerful performance, so it probably isn't worth upgrading from one to the other, as both are capable of running even the most demanding games at the highest settings.
The HD 7970 has 1024 MB more video memory than the GeForce GTX 770, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the HD 7970 also has superior memory performance overall.
The HD 7970 has 63.7 GB/sec greater memory bandwidth than the GeForce GTX 770, which means that the memory performance of the HD 7970 is much better than the GeForce GTX 770.
The Radeon HD 7970 GHz Edition has 2048 Shader Processing Units and the GeForce GTX 770 has 1536. However, the actual shader performance of the HD 7970 is 1828 and the actual shader performance of the GeForce GTX 770 is 1667. The HD 7970 having 161 better shader performance and an altogether better performance when taking into account other relevant data means that the HD 7970 delivers a significantly smoother and more efficient experience when processing graphical data than the GeForce GTX 770.
The Radeon HD 7970 GHz Edition requires 250 Watts to run and the GeForce GTX 770 requires 230 Watts. We would recommend a PSU with at least 500 Watts for the HD 7970 and a PSU with at least 550 Watts for the GeForce GTX 770. The HD 7970 requires 20 Watts more than the GeForce GTX 770 to run. The difference is not significant enough for the HD 7970 to have a noticeably larger impact on your yearly electricity bills than the GeForce GTX 770.
|Mini Review||Overview |
Radeon HD 7970 GHz Edition is a High-End Graphics Card based on the First Revision of the Graphics Core Next (GCN) Architecture.
The GCN 1.1 revision of the Graphics Core Next Architecture adds new important technologies and is largely oriented for energy efficiency. New technologies such as PowerTune and TrueAudio are the biggest additions as well as DirectX 11.2 support.
It equips a GPU Codenamed Tahiti XT2 which has 32 Compute Units activated and thus offers 2048 Shader Processing Units, 128 TMUs and 32 ROPs. The Central Unit is clocked at 1000MHz and goes up to 1050MHz, in Turbo Mode.
The GPU accesses a 3GB frame buffer of fast GDDR5, through a 384-bit memory interface. The size of the frame buffer is exaggerated and in no way benefits the GPU. The Memory Clock Operates at 1500MHz.
With a rated board TDP of 275W, it requires at least a 600W PSU with one available 6-pin and one available 8-pin connectors.
Radeon HD 7970 GHz Edition competes with GeForce GTX 680 and is essentially a Higher Clocked Radeon HD 7970 with the addition of The Boost Clock.
It proves to be faster than GeForce GTX 680 at resolutions up to 1920x1080 but takes further lead beyond that.
Radeon HD 7970 GHz Edition is best suited for resolutions up to and including 1920x1080. We recommend a Very Strong Processor (Intel Core i7 Quad Core/AMD FX Eight Core) and 8GB of RAM for Optimal Performance.