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GeForce GTX 460 1GB vs Radeon HD 3870 X2 1GB

Intro

The GeForce GTX 460 1GB features a GPU clock speed of 675 MHz, and the 1024 MB of GDDR5 memory is set to run at 900 MHz through a 256-bit bus. It also features 336 SPUs, 56 TAUs, and 32 Raster Operation Units.

Compare all that to the Radeon HD 3870 X2 1GB, which comes with core speeds of 825 MHz on the GPU, and 1126 MHz on the 1024 MB of GDDR4 memory. It features 320(64x5) SPUs as well as 16 TAUs and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon HD 3870 X2 1GB is 25% faster than the GeForce GTX 460 1GB in general, due to its greater bandwidth. (explain)

Radeon HD 3870 X2 1GB 144128 MB/sec
GeForce GTX 460 1GB 115200 MB/sec
Difference: 28928 (25%)

Texel Rate

The GeForce GTX 460 1GB should be much (approximately 43%) better at AF than the Radeon HD 3870 X2 1GB. (explain)

GeForce GTX 460 1GB 37800 Mtexels/sec
Radeon HD 3870 X2 1GB 26400 Mtexels/sec
Difference: 11400 (43%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 3870 X2 1GB is the winner, by far. (explain)

Radeon HD 3870 X2 1GB 26400 Mpixels/sec
GeForce GTX 460 1GB 21600 Mpixels/sec
Difference: 4800 (22%)

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

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GeForce GTX 460 1GB

Amazon.com

Check prices at:

Radeon HD 3870 X2 1GB

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 460 1GB Radeon HD 3870 X2 1GB
Manufacturer nVidia AMD
Year July 2010 Jan 28, 2008
Code Name GF104 R680
Memory 1024 MB 1024 MB (x2)
Core Speed 675 MHz 825 MHz (x2)
Memory Speed 3600 MHz 2252 MHz (x2)
Power (Max TDP) 160 watts (Unknown) watts
Bandwidth 115200 MB/sec 144128 MB/sec
Texel Rate 37800 Mtexels/sec 26400 Mtexels/sec
Pixel Rate 21600 Mpixels/sec 26400 Mpixels/sec
Unified Shaders 336 320(64x5) (x2)
Texture Mapping Units 56 16 (x2)
Render Output Units 32 16 (x2)
Bus Type GDDR5 GDDR4
Bus Width 256-bit 256-bit (x2)
Fab Process 40 nm 55 nm
Transistors 1950 million (Unknown) million
Bus PCIe x16 PCIe 2.0 x16/(internal PCIe 1.1 x16)
DirectX Version DirectX 11 DirectX 10.1
OpenGL Version OpenGL 4.1 OpenGL 3.0

Memory Bandwidth: Bandwidth is the largest amount of data (measured in megabytes per second) that can be moved past the external memory interface in one second. It is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better 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 amount of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as 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 potential to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 460 1GB

Amazon.com

Check prices at:

Radeon HD 3870 X2 1GB

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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