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GeForce GTX 970 vs Radeon HD 7790

Intro

The GeForce GTX 970 has a GPU core speed of 1050 MHz, and the 4096 MB of GDDR5 RAM runs at 1750 MHz through a 256-bit bus. It also is comprised of 1664 SPUs, 104 Texture Address Units, and 64 Raster Operation Units.

Compare all of that to the Radeon HD 7790, which makes use of a 28 nm design. AMD has set the core speed at 1000 MHz. The GDDR5 memory is set to run at a speed of 1500 MHz on this card. It features 896 SPUs as well as 56 TAUs and 16 Rasterization Operator Units.

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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 7790 4330 points
Difference: 6537 (151%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7790 85 Watts
GeForce GTX 970 145 Watts
Difference: 60 Watts (71%)

Memory Bandwidth

Performance-wise, the GeForce GTX 970 should theoretically be a lot better than the Radeon HD 7790 overall. (explain)

GeForce GTX 970 224000 MB/sec
Radeon HD 7790 96000 MB/sec
Difference: 128000 (133%)

Texel Rate

The GeForce GTX 970 is quite a bit (more or less 95%) better at AF than the Radeon HD 7790. (explain)

GeForce GTX 970 109200 Mtexels/sec
Radeon HD 7790 56000 Mtexels/sec
Difference: 53200 (95%)

Pixel Rate

The GeForce GTX 970 should be much (approximately 320%) faster with regards to anti-aliasing than the Radeon HD 7790, and also should be capable of handling higher screen resolutions better. (explain)

GeForce GTX 970 67200 Mpixels/sec
Radeon HD 7790 16000 Mpixels/sec
Difference: 51200 (320%)

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

Radeon HD 7790

Amazon.com

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 7790
Manufacturer nVidia AMD
Year September 2014 March 2013
Code Name GM204-200 Bonaire XT
Memory 4096 MB 1024 MB
Core Speed 1050 MHz 1000 MHz
Memory Speed 7000 MHz 6000 MHz
Power (Max TDP) 145 watts 85 watts
Bandwidth 224000 MB/sec 96000 MB/sec
Texel Rate 109200 Mtexels/sec 56000 Mtexels/sec
Pixel Rate 67200 Mpixels/sec 16000 Mpixels/sec
Unified Shaders 1664 896
Texture Mapping Units 104 56
Render Output Units 64 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 128-bit
Fab Process 28 nm 28 nm
Transistors 5200 million 2080 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.2 DirectX 11.1
OpenGL Version OpenGL 4.5 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the largest amount of information (counted in MB per second) that can be transferred past the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at handling 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 can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 970

Amazon.com

Radeon HD 7790

Amazon.com

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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