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Geforce GTX 770 vs Radeon HD 6790

Intro

The Geforce GTX 770 uses a 28 nm design. nVidia has set the core speed at 1046 MHz. The GDDR5 memory works at a frequency of 1753 MHz on this particular card. It features 1536 SPUs as well as 128 TAUs and 32 ROPs.

Compare those specs to the Radeon HD 6790, which makes use of a 40 nm design. AMD has set the core speed at 840 MHz. The GDDR5 RAM is set to run at a speed of 1050 MHz on this model. It features 800 SPUs as well as 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 770 7854 points
Radeon HD 6790 2150 points
Difference: 5704 (265%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6790 150 Watts
Geforce GTX 770 230 Watts
Difference: 80 Watts (53%)

Memory Bandwidth

In theory, the Geforce GTX 770 will be 67% quicker than the Radeon HD 6790 in general, due to its greater data rate. (explain)

Geforce GTX 770 224384 MB/sec
Radeon HD 6790 134400 MB/sec
Difference: 89984 (67%)

Texel Rate

The Geforce GTX 770 will be much (more or less 298%) more effective at anisotropic filtering than the Radeon HD 6790. (explain)

Geforce GTX 770 133888 Mtexels/sec
Radeon HD 6790 33600 Mtexels/sec
Difference: 100288 (298%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Geforce GTX 770 is superior to the Radeon HD 6790, by far. (explain)

Geforce GTX 770 33472 Mpixels/sec
Radeon HD 6790 13440 Mpixels/sec
Difference: 20032 (149%)

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 770

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 770 Radeon HD 6790
Manufacturer nVidia AMD
Year May 2013 April 2011
Code Name GK104 Barts LE
Memory 2048 MB 1024 MB
Core Speed 1046 MHz 840 MHz
Memory Speed 7012 MHz 4200 MHz
Power (Max TDP) 230 watts 150 watts
Bandwidth 224384 MB/sec 134400 MB/sec
Texel Rate 133888 Mtexels/sec 33600 Mtexels/sec
Pixel Rate 33472 Mpixels/sec 13440 Mpixels/sec
Unified Shaders 1536 800
Texture Mapping Units 128 40
Render Output Units 32 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 28 nm 40 nm
Transistors 3540 million 1700 million
Bus PCIe 3.0 x16 PCIe 2.1 x16
DirectX Version DirectX 11.0 DirectX 11
OpenGL Version OpenGL 4.3 OpenGL 4.1

Memory Bandwidth: Bandwidth is the largest amount of data (counted in megabytes per second) that can be transferred across the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory speed. In the case of DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

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Geforce GTX 770

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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