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GeForce GTX 460 (OEM) vs Radeon HD 4870 1GB

Intro

The GeForce GTX 460 (OEM) has clock speeds of 650 MHz on the GPU, and 850 MHz on the 1024 MB of GDDR5 RAM. It features 336 SPUs along with 56 Texture Address Units and 32 ROPs.

Compare those specs to the Radeon HD 4870 1GB, which comes with core speeds of 750 MHz on the GPU, and 900 MHz on the 1024 MB of GDDR5 RAM. It features 800(160x5) SPUs as well as 40 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

Theoretically speaking, the Radeon HD 4870 1GB is 6% faster than the GeForce GTX 460 (OEM) overall, due to its greater data rate. (explain)

Radeon HD 4870 1GB 115200 MB/sec
GeForce GTX 460 (OEM) 108800 MB/sec
Difference: 6400 (6%)

Texel Rate

The GeForce GTX 460 (OEM) should be quite a bit (about 21%) faster with regards to anisotropic filtering than the Radeon HD 4870 1GB. (explain)

GeForce GTX 460 (OEM) 36400 Mtexels/sec
Radeon HD 4870 1GB 30000 Mtexels/sec
Difference: 6400 (21%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 460 (OEM) is the winner, by a large margin. (explain)

GeForce GTX 460 (OEM) 20800 Mpixels/sec
Radeon HD 4870 1GB 12000 Mpixels/sec
Difference: 8800 (73%)

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 460 (OEM)

Amazon.com

Check prices at:

Radeon HD 4870 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 (OEM) Radeon HD 4870 1GB
Manufacturer nVidia AMD
Year October 2010 Jun 25, 2008
Code Name GF104 RV770 XT
Memory 1024 MB 1024 MB
Core Speed 650 MHz 750 MHz
Memory Speed 3400 MHz 3600 MHz
Power (Max TDP) 150 watts 150 watts
Bandwidth 108800 MB/sec 115200 MB/sec
Texel Rate 36400 Mtexels/sec 30000 Mtexels/sec
Pixel Rate 20800 Mpixels/sec 12000 Mpixels/sec
Unified Shaders 336 800(160x5)
Texture Mapping Units 56 40
Render Output Units 32 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 40 nm 55 nm
Transistors 1950 million 956 million
Bus PCIe x16 PCIe 2.0 x16
DirectX Version DirectX 11 DirectX 10.1
OpenGL Version OpenGL 4.1 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the max amount of information (in units of MB per second) that can be transported past the external memory interface in a second. It is calculated by multiplying the interface width by its memory speed. In the case of DDR type RAM, the result 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, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total number of texture units by the core 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 per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of 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 memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 460 (OEM)

Amazon.com

Check prices at:

Radeon HD 4870 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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