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GeForce GTX 470 vs Radeon HD 4870 512MB

Intro

The GeForce GTX 470 comes with core clock speeds of 607 MHz on the GPU, and 837 MHz on the 1280 MB of GDDR5 RAM. It features 448 SPUs as well as 56 TAUs and 40 Rasterization Operator Units.

Compare those specs to the Radeon HD 4870 512MB, which has core speeds of 750 MHz on the GPU, and 900 MHz on the 512 MB of GDDR5 memory. It features 800(160x5) SPUs along with 40 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4870 512MB 150 Watts
GeForce GTX 470 215 Watts
Difference: 65 Watts (43%)

Memory Bandwidth

Theoretically, the GeForce GTX 470 should perform a little bit faster than the Radeon HD 4870 512MB in general. (explain)

GeForce GTX 470 133920 MB/sec
Radeon HD 4870 512MB 115200 MB/sec
Difference: 18720 (16%)

Texel Rate

The GeForce GTX 470 is a bit (more or less 13%) faster with regards to anisotropic filtering than the Radeon HD 4870 512MB. (explain)

GeForce GTX 470 33992 Mtexels/sec
Radeon HD 4870 512MB 30000 Mtexels/sec
Difference: 3992 (13%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 470 is the winner, by a large margin. (explain)

GeForce GTX 470 24280 Mpixels/sec
Radeon HD 4870 512MB 12000 Mpixels/sec
Difference: 12280 (102%)

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 470

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 470 Radeon HD 4870 512MB
Manufacturer nVidia AMD
Year March 2010 Jun 25, 2008
Code Name GF100 RV770 XT
Memory 1280 MB 512 MB
Core Speed 607 MHz 750 MHz
Memory Speed 3348 MHz 3600 MHz
Power (Max TDP) 215 watts 150 watts
Bandwidth 133920 MB/sec 115200 MB/sec
Texel Rate 33992 Mtexels/sec 30000 Mtexels/sec
Pixel Rate 24280 Mpixels/sec 12000 Mpixels/sec
Unified Shaders 448 800(160x5)
Texture Mapping Units 56 40
Render Output Units 40 16
Bus Type GDDR5 GDDR5
Bus Width 320-bit 256-bit
Fab Process 40 nm 55 nm
Transistors 3000 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 information (counted in MB per second) that can be transported across the external memory interface in one second. The number is worked out by multiplying the bus width by its memory clock speed. If the card has DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This is calculated by multiplying the total number of texture units of the card 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 one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The figure 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 filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 470

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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