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GeForce GTX 970 vs Radeon HD 6790

Intro

The GeForce GTX 970 comes with a core clock speed of 1050 MHz and a GDDR5 memory speed of 1750 MHz. It also uses a 256-bit memory bus, and makes use of a 28 nm design. It features 1664 SPUs, 104 Texture Address Units, and 64 ROPs.

Compare those specifications to the Radeon HD 6790, which features core speeds of 840 MHz on the GPU, and 1050 MHz on the 1024 MB of GDDR5 RAM. It features 800 SPUs along with 40 TAUs and 16 ROPs.

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

GeForce GTX 970 10867 points
Radeon HD 6790 2150 points
Difference: 8717 (405%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 970 145 Watts
Radeon HD 6790 150 Watts
Difference: 5 Watts (3%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 970 will be 67% faster than the Radeon HD 6790 in general, because of its higher data rate. (explain)

GeForce GTX 970 224000 MB/sec
Radeon HD 6790 134400 MB/sec
Difference: 89600 (67%)

Texel Rate

The GeForce GTX 970 will be quite a bit (approximately 225%) more effective at anisotropic filtering than the Radeon HD 6790. (explain)

GeForce GTX 970 109200 Mtexels/sec
Radeon HD 6790 33600 Mtexels/sec
Difference: 75600 (225%)

Pixel Rate

The GeForce GTX 970 will be quite a bit (more or less 400%) better at AA than the Radeon HD 6790, and able to handle higher resolutions more effectively. (explain)

GeForce GTX 970 67200 Mpixels/sec
Radeon HD 6790 13440 Mpixels/sec
Difference: 53760 (400%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

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GeForce GTX 970

Amazon.com

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Radeon HD 6790

Amazon.com

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Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model GeForce GTX 970 Radeon HD 6790
Manufacturer nVidia AMD
Year September 2014 April 2011
Code Name GM204-200 Barts LE
Memory 4096 MB 1024 MB
Core Speed 1050 MHz 840 MHz
Memory Speed 7000 MHz 4200 MHz
Power (Max TDP) 145 watts 150 watts
Bandwidth 224000 MB/sec 134400 MB/sec
Texel Rate 109200 Mtexels/sec 33600 Mtexels/sec
Pixel Rate 67200 Mpixels/sec 13440 Mpixels/sec
Unified Shaders 1664 800
Texture Mapping Units 104 40
Render Output Units 64 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 28 nm 40 nm
Transistors 5200 million 1700 million
Bus PCIe 3.0 x16 PCIe 2.1 x16
DirectX Version DirectX 11.2 DirectX 11
OpenGL Version OpenGL 4.5 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the max amount of data (counted in megabytes per second) that can be transferred over the external memory interface in one second. It's worked out by multiplying the bus width by its memory speed. In the case of DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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GeForce GTX 970

Amazon.com

Check prices at:

Radeon HD 6790

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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