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GeForce GTX 460 SE vs Radeon HD 4870 1GB

Intro

The GeForce GTX 460 SE comes with a core clock frequency of 650 MHz and a GDDR5 memory frequency of 850 MHz. It also uses a 256-bit bus, and makes use of a 40 nm design. It features 288 SPUs, 48 TAUs, and 32 Raster Operation Units.

Compare that to the Radeon HD 4870 1GB, which has a GPU core clock speed of 750 MHz, and 1024 MB of GDDR5 memory set to run at 900 MHz through a 256-bit bus. It also features 800(160x5) SPUs, 40 TAUs, and 16 ROPs.

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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 will be 6% faster than the GeForce GTX 460 SE overall, because of its greater data rate. (explain)

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

Texel Rate

The GeForce GTX 460 SE will be a little bit (about 4%) better at AF than the Radeon HD 4870 1GB. (explain)

GeForce GTX 460 SE 31200 Mtexels/sec
Radeon HD 4870 1GB 30000 Mtexels/sec
Difference: 1200 (4%)

Pixel Rate

The GeForce GTX 460 SE should be quite a bit (more or less 73%) better at full screen anti-aliasing than the Radeon HD 4870 1GB, and will be able to handle higher resolutions better. (explain)

GeForce GTX 460 SE 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 SE

Amazon.com

Radeon HD 4870 1GB

Amazon.com

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 SE Radeon HD 4870 1GB
Manufacturer nVidia AMD
Year November 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 31200 Mtexels/sec 30000 Mtexels/sec
Pixel Rate 20800 Mpixels/sec 12000 Mpixels/sec
Unified Shaders 288 800(160x5)
Texture Mapping Units 48 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: Bandwidth is the maximum amount of data (measured in MB per second) that can be transferred past the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the video card will be at 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 that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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GeForce GTX 460 SE

Amazon.com

Radeon HD 4870 1GB

Amazon.com

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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