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GeForce GTX 1080 vs Radeon HD 6790

Intro

The GeForce GTX 1080 features core clock speeds of 1607 MHz on the GPU, and 1251 MHz on the 8192 MB of GDDR5X RAM. It features 2560 SPUs as well as 160 TAUs and 64 Rasterization Operator Units.

Compare all of that to the Radeon HD 6790, which features a core clock frequency of 840 MHz and a GDDR5 memory frequency of 1050 MHz. It also uses a 256-bit bus, and uses a 40 nm design. It features 800 SPUs, 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 1080 21942 points
Radeon HD 6790 2150 points
Difference: 19792 (921%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6790 150 Watts
GeForce GTX 1080 180 Watts
Difference: 30 Watts (20%)

Memory Bandwidth

The GeForce GTX 1080 should in theory perform quite a bit faster than the Radeon HD 6790 overall. (explain)

GeForce GTX 1080 327680 MB/sec
Radeon HD 6790 134400 MB/sec
Difference: 193280 (144%)

Texel Rate

The GeForce GTX 1080 will be quite a bit (about 665%) more effective at AF than the Radeon HD 6790. (explain)

GeForce GTX 1080 257120 Mtexels/sec
Radeon HD 6790 33600 Mtexels/sec
Difference: 223520 (665%)

Pixel Rate

The GeForce GTX 1080 should be much (about 665%) more effective at AA than the Radeon HD 6790, and also able to handle higher screen resolutions more effectively. (explain)

GeForce GTX 1080 102848 Mpixels/sec
Radeon HD 6790 13440 Mpixels/sec
Difference: 89408 (665%)

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 1080

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.

Specifications

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Model GeForce GTX 1080 Radeon HD 6790
Manufacturer nVidia AMD
Year May 2016 April 2011
Code Name GP104-400 Barts LE
Memory 8192 MB 1024 MB
Core Speed 1607 MHz 840 MHz
Memory Speed 10008 MHz 4200 MHz
Power (Max TDP) 180 watts 150 watts
Bandwidth 327680 MB/sec 134400 MB/sec
Texel Rate 257120 Mtexels/sec 33600 Mtexels/sec
Pixel Rate 102848 Mpixels/sec 13440 Mpixels/sec
Unified Shaders 2560 800
Texture Mapping Units 160 40
Render Output Units 64 16
Bus Type GDDR5X GDDR5
Bus Width 256-bit 256-bit
Fab Process 16 nm 40 nm
Transistors 7200 million 1700 million
Bus PCIe 3.0 x16 PCIe 2.1 x16
DirectX Version DirectX 12.0 DirectX 11
OpenGL Version OpenGL 4.5 OpenGL 4.1

Memory Bandwidth: Bandwidth is the max amount of data (counted in megabytes per second) that can be transported over the external memory interface within a second. It is calculated by multiplying the bus width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the core 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 also depends on many 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 1080

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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