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GeForce GTX 560 vs Radeon HD 6790

Intro

The GeForce GTX 560 features core clock speeds of 810 MHz on the GPU, and 1001 MHz on the 1024 MB of GDDR5 memory. It features 336 SPUs as well as 56 Texture Address Units and 32 ROPs.

Compare those specifications to the Radeon HD 6790, which features a clock frequency of 840 MHz and a GDDR5 memory speed of 1050 MHz. It also uses a 256-bit memory bus, and uses a 40 nm design. It is comprised of 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 560 3030 points
Radeon HD 6790 2150 points
Difference: 880 (41%)

Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

The Radeon HD 6790 should in theory perform a bit faster than the GeForce GTX 560 in general. (explain)

Radeon HD 6790 134400 MB/sec
GeForce GTX 560 128128 MB/sec
Difference: 6272 (5%)

Texel Rate

The GeForce GTX 560 should be much (more or less 35%) better at anisotropic filtering than the Radeon HD 6790. (explain)

GeForce GTX 560 45360 Mtexels/sec
Radeon HD 6790 33600 Mtexels/sec
Difference: 11760 (35%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 560 is the winner, and very much so. (explain)

GeForce GTX 560 25920 Mpixels/sec
Radeon HD 6790 13440 Mpixels/sec
Difference: 12480 (93%)

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 560

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 560 Radeon HD 6790
Manufacturer nVidia AMD
Year May 2011 April 2011
Code Name GF114 Barts LE
Memory 1024 MB 1024 MB
Core Speed 810 MHz 840 MHz
Memory Speed 4004 MHz 4200 MHz
Power (Max TDP) 150 watts 150 watts
Bandwidth 128128 MB/sec 134400 MB/sec
Texel Rate 45360 Mtexels/sec 33600 Mtexels/sec
Pixel Rate 25920 Mpixels/sec 13440 Mpixels/sec
Unified Shaders 336 800
Texture Mapping Units 56 40
Render Output Units 32 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 40 nm 40 nm
Transistors 1950 million 1700 million
Bus PCIe 2.0 x16 PCIe 2.1 x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 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 in a second. It's worked out by multiplying the bus width by its memory clock speed. In the case of DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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GeForce GTX 560

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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