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GeForce GTX 260 vs Radeon HD 6870

Intro

The GeForce GTX 260 comes with clock speeds of 576 MHz on the GPU, and 999 MHz on the 896 MB of GDDR3 RAM. It features 192 SPUs as well as 64 Texture Address Units and 28 ROPs.

Compare all of that to the Radeon HD 6870, which uses a 40 nm design. AMD has clocked the core speed at 900 MHz. The GDDR5 memory works at a speed of 1050 MHz on this particular card. It features 1120 SPUs along with 56 TAUs and 32 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6870 151 Watts
GeForce GTX 260 182 Watts
Difference: 31 Watts (21%)

Memory Bandwidth

Performance-wise, the Radeon HD 6870 should in theory be a small bit superior to the GeForce GTX 260 in general. (explain)

Radeon HD 6870 134400 MB/sec
GeForce GTX 260 111888 MB/sec
Difference: 22512 (20%)

Texel Rate

The Radeon HD 6870 is a lot (about 37%) faster with regards to texture filtering than the GeForce GTX 260. (explain)

Radeon HD 6870 50400 Mtexels/sec
GeForce GTX 260 36864 Mtexels/sec
Difference: 13536 (37%)

Pixel Rate

The Radeon HD 6870 will be much (about 79%) more effective at anti-aliasing than the GeForce GTX 260, and also will be capable of handling higher resolutions more effectively. (explain)

Radeon HD 6870 28800 Mpixels/sec
GeForce GTX 260 16128 Mpixels/sec
Difference: 12672 (79%)

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 6870

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 6870
Manufacturer nVidia AMD
Year June 16, 2008 October 2010
Code Name G200 Barts XT
Memory 896 MB 1024 MB
Core Speed 576 MHz 900 MHz
Memory Speed 1998 MHz 4200 MHz
Power (Max TDP) 182 watts 151 watts
Bandwidth 111888 MB/sec 134400 MB/sec
Texel Rate 36864 Mtexels/sec 50400 Mtexels/sec
Pixel Rate 16128 Mpixels/sec 28800 Mpixels/sec
Unified Shaders 192 1120
Texture Mapping Units 64 56
Render Output Units 28 32
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 x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.1 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the max amount of information (counted in MB per second) that can be moved over the external memory interface within a second. It's calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR type memory, 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 high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write 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 card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

GeForce GTX 260

Amazon.com

Check prices at:

Radeon HD 6870

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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