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

Intro

The GeForce GTX 460 1GB comes with core speeds of 675 MHz on the GPU, and 900 MHz on the 1024 MB of GDDR5 memory. It features 336 SPUs along with 56 Texture Address Units and 32 Rasterization Operator Units.

Compare those specs to the Radeon HD 3870 X2 1GB, which has GPU core speed of 825 MHz, and 1024 MB of GDDR4 memory running at 1126 MHz through a 256-bit bus. It also is comprised of 320(64x5) Stream Processors, 16 TAUs, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon HD 3870 X2 1GB should in theory be quite a bit superior to the GeForce GTX 460 1GB overall. (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 will be a lot (more or less 43%) faster with regards to 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

The Radeon HD 3870 X2 1GB should be a lot (approximately 22%) more effective at full screen anti-aliasing than the GeForce GTX 460 1GB, and capable of handling higher resolutions without losing too much performance. (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 maximum amount of information (measured in megabytes per second) that can be transferred over the external memory interface in a second. It is calculated by multiplying the interface width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max 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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