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Radeon HD 4870 512MB vs Radeon HD 5570

Intro

The Radeon HD 4870 512MB comes with core clock 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 Texture Address Units and 16 ROPs.

Compare that to the Radeon HD 5570, which comes with a core clock speed of 650 MHz and a DDR3 memory frequency of 900 MHz. It also features a 128-bit memory bus, and makes use of a 40 nm design. It features 400(80x5) SPUs, 20 Texture Address Units, and 8 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5570 43 Watts
Radeon HD 4870 512MB 150 Watts
Difference: 107 Watts (249%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 4870 512MB is 300% faster than the Radeon HD 5570 overall, because of its greater bandwidth. (explain)

Radeon HD 4870 512MB 115200 MB/sec
Radeon HD 5570 28800 MB/sec
Difference: 86400 (300%)

Texel Rate

The Radeon HD 4870 512MB should be a lot (approximately 131%) faster with regards to texture filtering than the Radeon HD 5570. (explain)

Radeon HD 4870 512MB 30000 Mtexels/sec
Radeon HD 5570 13000 Mtexels/sec
Difference: 17000 (131%)

Pixel Rate

The Radeon HD 4870 512MB is a lot (about 131%) faster with regards to FSAA than the Radeon HD 5570, and also will be capable of handling higher screen resolutions more effectively. (explain)

Radeon HD 4870 512MB 12000 Mpixels/sec
Radeon HD 5570 5200 Mpixels/sec
Difference: 6800 (131%)

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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Radeon HD 4870 512MB

Amazon.com

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Radeon HD 5570

Amazon.com

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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 Radeon HD 4870 512MB Radeon HD 5570
Manufacturer AMD AMD
Year Jun 25, 2008 February 9, 2010
Code Name RV770 XT Redwood PRO
Memory 512 MB 512 MB
Core Speed 750 MHz 650 MHz
Memory Speed 3600 MHz 1800 MHz
Power (Max TDP) 150 watts 43 watts
Bandwidth 115200 MB/sec 28800 MB/sec
Texel Rate 30000 Mtexels/sec 13000 Mtexels/sec
Pixel Rate 12000 Mpixels/sec 5200 Mpixels/sec
Unified Shaders 800(160x5) 400(80x5)
Texture Mapping Units 40 20
Render Output Units 16 8
Bus Type GDDR5 DDR3
Bus Width 256-bit 128-bit
Fab Process 55 nm 40 nm
Transistors 956 million 627 million
Bus PCIe 2.0 x16 PCIe 2.1 x16
DirectX Version DirectX 10.1 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 3.2

Memory Bandwidth: Bandwidth is the maximum amount of information (in units of megabytes per second) that can be moved over the external memory interface within a second. It is calculated by multiplying the interface width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 again. If it uses 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 number of texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels the video card can 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 colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

Radeon HD 4870 512MB

Amazon.com

Check prices at:

Radeon HD 5570

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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