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GeForce GTX 260 vs Radeon HD 4870 512MB

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 that to the Radeon HD 4870 512MB, which comes with a clock speed of 750 MHz and a GDDR5 memory frequency of 900 MHz. It also features a 256-bit bus, and uses a 55 nm design. It is comprised of 800(160x5) SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4870 512MB 150 Watts
GeForce GTX 260 182 Watts
Difference: 32 Watts (21%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 4870 512MB will be 3% quicker than the GeForce GTX 260 overall, due to its greater bandwidth. (explain)

Radeon HD 4870 512MB 115200 MB/sec
GeForce GTX 260 111888 MB/sec
Difference: 3312 (3%)

Texel Rate

The GeForce GTX 260 is much (about 23%) faster with regards to AF than the Radeon HD 4870 512MB. (explain)

GeForce GTX 260 36864 Mtexels/sec
Radeon HD 4870 512MB 30000 Mtexels/sec
Difference: 6864 (23%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 260 is superior to the Radeon HD 4870 512MB, by far. (explain)

GeForce GTX 260 16128 Mpixels/sec
Radeon HD 4870 512MB 12000 Mpixels/sec
Difference: 4128 (34%)

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 4870 512MB

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 4870 512MB
Manufacturer nVidia AMD
Year June 16, 2008 Jun 25, 2008
Code Name G200 RV770 XT
Memory 896 MB 512 MB
Core Speed 576 MHz 750 MHz
Memory Speed 1998 MHz 3600 MHz
Power (Max TDP) 182 watts 150 watts
Bandwidth 111888 MB/sec 115200 MB/sec
Texel Rate 36864 Mtexels/sec 30000 Mtexels/sec
Pixel Rate 16128 Mpixels/sec 12000 Mpixels/sec
Unified Shaders 192 800(160x5)
Texture Mapping Units 64 40
Render Output Units 28 16
Bus Type GDDR3 GDDR5
Bus Width 448-bit 256-bit
Fab Process 65 nm 55 nm
Transistors 1400 million 956 million
Bus PCIe x16 2.0 PCIe 2.0 x16
DirectX Version DirectX 10 DirectX 10.1
OpenGL Version OpenGL 3.1 OpenGL 3.0

Memory Bandwidth: Bandwidth is the maximum amount of information (measured in megabytes per second) that can be transferred across the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the 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 amount of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total texture units by the core speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

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

Display Prices

Hide Prices

GeForce GTX 260

Amazon.com

Check prices at:

Radeon HD 4870 512MB

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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