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GeForce GTX 260 vs Radeon HD 4870 X2

Intro

The GeForce GTX 260 has clock speeds of 576 MHz on the GPU, and 999 MHz on the 896 MB of GDDR3 memory. It features 192 SPUs along with 64 Texture Address Units and 28 Rasterization Operator Units.

Compare all that to the Radeon HD 4870 X2, which has a clock frequency of 750 MHz and a GDDR5 memory frequency of 900 MHz. It also features a 256-bit memory bus, and uses a 55 nm design. It is made up of 800(160x5) SPUs, 40 TAUs, and 16 Raster Operation Units.

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Settings: Ultra High Quality
AA: 8x
AF: none
Resolution: 1920x1200
Test Machine: Tom's Hardware Test Machine (Source)
Radeon HD 4870 X2 64 FPS
GeForce GTX 260 32 FPS
Difference: 32 FPS (100%)

Battlefield Bad Company 2

Settings: High Quality
AA: 4x
AF: 8x
Resolution: 1920x1200
Test Machine: Tom's Hardware Test Machine (Source)
Radeon HD 4870 X2 60 FPS
GeForce GTX 260 31 FPS
Difference: 29 FPS (94%)

Left4Dead 2

Settings: Very High
AA: 8x
AF: 16x
Resolution: 1920x1200
Test Machine: Tom's Hardware Test Machine (Source)
Radeon HD 4870 X2 134 FPS
GeForce GTX 260 69 FPS
Difference: 65 FPS (94%)

Supreme Commander 2

Settings: High
AA: 8x
AF: 16x
Resolution: 1920x1200
Test Machine: Tom's Hardware Test Machine (Source)
Radeon HD 4870 X2 99 FPS
GeForce GTX 260 34 FPS
Difference: 65 FPS (191%)

Radeon HD 4870 X2 wins

(Based entirely on the benchmarks listed above)

When combining all game benchmark scores on this page together, the Radeon HD 4870 X2 wins overall, by 191 FPS. Please note that we do not have the results of every benchmark ever done for these cards, so the results may differ wildly in different games.

Radeon HD 4870 X2 357 FPS
GeForce GTX 260 166 FPS
Difference: 191 FPS (115%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 260 182 Watts
Radeon HD 4870 X2 350 Watts
Difference: 168 Watts (92%)

Memory Bandwidth

Theoretically, the Radeon HD 4870 X2 should be a lot faster than the GeForce GTX 260 overall. (explain)

Radeon HD 4870 X2 230400 MB/sec
GeForce GTX 260 111888 MB/sec
Difference: 118512 (106%)

Texel Rate

The Radeon HD 4870 X2 is a lot (about 63%) faster with regards to anisotropic filtering than the GeForce GTX 260. (explain)

Radeon HD 4870 X2 60000 Mtexels/sec
GeForce GTX 260 36864 Mtexels/sec
Difference: 23136 (63%)

Pixel Rate

The Radeon HD 4870 X2 is much (more or less 49%) faster with regards to AA than the GeForce GTX 260, and should be able to handle higher resolutions better. (explain)

Radeon HD 4870 X2 24000 Mpixels/sec
GeForce GTX 260 16128 Mpixels/sec
Difference: 7872 (49%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Please note that the price comparisons are based on search keywords, and might not be the exact same card listed on this page. We have no control over the accuracy of their search results.

GeForce GTX 260

Amazon.com

Other US-based stores

Amazon.co.uk

Amazon.de

Amazon.fr

Radeon HD 4870 X2

Amazon.com

Other US-based stores

Amazon.co.uk

Amazon.de

Amazon.fr

Specifications

Model GeForce GTX 260 Radeon HD 4870 X2
Manufacturer nVidia ATi
Year June 16, 2008 Aug 12, 2008
Code Name G200 R700
Fab Process 65 nm 55 nm
Bus PCIe x16 2.0 PCIe 2.0 x16 (PCIe bridge)
Memory 896 MB 1024 MB (x2)
Core Speed 576 MHz 750 MHz (x2)
Shader Speed 1242 MHz (N/A) MHz (x2)
Memory Speed 999 MHz 900 MHz (x2)
Unified Shaders 192 800(160x5) (x2)
Texture Mapping Units 64 40 (x2)
Render Output Units 28 16 (x2)
Bus Type GDDR3 GDDR5
Bus Width 448-bit 256-bit (x2)
DirectX Version DirectX 10 DirectX 10.1
OpenGL Version OpenGL 3.1 OpenGL 3.0
Power (Max TDP) 182 watts 350 watts
Shader Model 4.0 4.1
Bandwidth 111888 MB/sec 230400 MB/sec
Texel Rate 36864 Mtexels/sec 60000 Mtexels/sec
Pixel Rate 16128 Mpixels/sec 24000 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the largest amount of information (in units of MB per second) that can be transferred past the external memory interface in one second. It's worked out by multiplying the bus width by its memory clock speed. In the case of DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total amount of texture units of the card by the core clock 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 applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

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