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GeForce GTX 260 vs Radeon HD 6790

Intro

The GeForce GTX 260 has a GPU clock speed of 576 MHz, and the 896 MB of GDDR3 memory is set to run at 999 MHz through a 448-bit bus. It also is comprised of 192 SPUs, 64 Texture Address Units, and 28 Raster Operation Units.

Compare all of that to the Radeon HD 6790, which features core speeds of 840 MHz on the GPU, and 1050 MHz on the 1024 MB of GDDR5 memory. It features 800 SPUs along with 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6790 150 Watts
GeForce GTX 260 182 Watts
Difference: 32 Watts (21%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6790 is 20% quicker than the GeForce GTX 260 in general, because of its higher data rate. (explain)

Radeon HD 6790 134400 MB/sec
GeForce GTX 260 111888 MB/sec
Difference: 22512 (20%)

Texel Rate

The GeForce GTX 260 is just a bit (approximately 10%) more effective at anisotropic filtering than the Radeon HD 6790. (explain)

GeForce GTX 260 36864 Mtexels/sec
Radeon HD 6790 33600 Mtexels/sec
Difference: 3264 (10%)

Pixel Rate

The GeForce GTX 260 should be a bit (approximately 20%) better at AA than the Radeon HD 6790, and should be capable of handling higher resolutions better. (explain)

GeForce GTX 260 16128 Mpixels/sec
Radeon HD 6790 13440 Mpixels/sec
Difference: 2688 (20%)

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 260

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 260 Radeon HD 6790
Manufacturer nVidia AMD
Year June 16, 2008 April 2011
Code Name G200 Barts LE
Memory 896 MB 1024 MB
Core Speed 576 MHz 840 MHz
Memory Speed 1998 MHz 4200 MHz
Power (Max TDP) 182 watts 150 watts
Bandwidth 111888 MB/sec 134400 MB/sec
Texel Rate 36864 Mtexels/sec 33600 Mtexels/sec
Pixel Rate 16128 Mpixels/sec 13440 Mpixels/sec
Unified Shaders 192 800
Texture Mapping Units 64 40
Render Output Units 28 16
Bus Type GDDR3 GDDR5
Bus Width 448-bit 256-bit
Fab Process 65 nm 40 nm
Transistors 1400 million 1700 million
Bus PCIe x16 2.0 PCIe 2.1 x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.1 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the max amount of data (measured in megabytes per second) that can be transported past the external memory interface within a second. It's worked out by multiplying the bus width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

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

Display Prices

Hide Prices

GeForce GTX 260

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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