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GeForce GTX 970 vs Radeon HD 7790

Intro

The GeForce GTX 970 uses a 28 nm design. nVidia has set the core frequency at 1050 MHz. The GDDR5 memory runs at a frequency of 1750 MHz on this specific card. It features 1664 SPUs along with 104 TAUs and 64 Rasterization Operator Units.

Compare those specifications to the Radeon HD 7790, which comes with clock speeds of 1000 MHz on the GPU, and 1500 MHz on the 1024 MB of GDDR5 RAM. It features 896 SPUs as well as 56 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 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

The GeForce GTX 970 should in theory be much faster 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 should be much (more or less 95%) better at anisotropic filtering than the Radeon HD 7790. (explain)

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

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 970 is superior to the Radeon HD 7790, by a large margin. (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

Check prices at:

Radeon HD 7790

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.

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 max amount of information (measured in MB per second) that can be moved over the external memory interface in one second. It is calculated by multiplying the interface width by the speed of its memory. If the card has DDR memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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GeForce GTX 970

Amazon.com

Check prices at:

Radeon HD 7790

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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