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Radeon HD 5570 vs Radeon HD 6870

Intro

The Radeon HD 5570 features core clock speeds of 650 MHz on the GPU, and 900 MHz on the 512 MB of DDR3 RAM. It features 400(80x5) SPUs as well as 20 TAUs and 8 ROPs.

Compare those specifications to the Radeon HD 6870, which comes with core speeds of 900 MHz on the GPU, and 1050 MHz on the 1024 MB of GDDR5 RAM. It features 1120 SPUs along with 56 TAUs and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5570 43 Watts
Radeon HD 6870 151 Watts
Difference: 108 Watts (251%)

Memory Bandwidth

As far as performance goes, the Radeon HD 6870 should theoretically be quite a bit better than the Radeon HD 5570 overall. (explain)

Radeon HD 6870 134400 MB/sec
Radeon HD 5570 28800 MB/sec
Difference: 105600 (367%)

Texel Rate

The Radeon HD 6870 will be much (approximately 288%) faster with regards to anisotropic filtering than the Radeon HD 5570. (explain)

Radeon HD 6870 50400 Mtexels/sec
Radeon HD 5570 13000 Mtexels/sec
Difference: 37400 (288%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon HD 6870 is superior to the Radeon HD 5570, and very much so. (explain)

Radeon HD 6870 28800 Mpixels/sec
Radeon HD 5570 5200 Mpixels/sec
Difference: 23600 (454%)

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 5570

Amazon.com

Check prices at:

Radeon HD 6870

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 Radeon HD 5570 Radeon HD 6870
Manufacturer AMD AMD
Year February 9, 2010 October 2010
Code Name Redwood PRO Barts XT
Memory 512 MB 1024 MB
Core Speed 650 MHz 900 MHz
Memory Speed 1800 MHz 4200 MHz
Power (Max TDP) 43 watts 151 watts
Bandwidth 28800 MB/sec 134400 MB/sec
Texel Rate 13000 Mtexels/sec 50400 Mtexels/sec
Pixel Rate 5200 Mpixels/sec 28800 Mpixels/sec
Unified Shaders 400(80x5) 1120
Texture Mapping Units 20 56
Render Output Units 8 32
Bus Type DDR3 GDDR5
Bus Width 128-bit 256-bit
Fab Process 40 nm 40 nm
Transistors 627 million 1700 million
Bus PCIe 2.1 x16 PCIe x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 3.2 OpenGL 4.1

Memory Bandwidth: Bandwidth is the largest amount of data (counted in MB per second) that can be transported over the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few 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

Radeon HD 5570

Amazon.com

Check prices at:

Radeon HD 6870

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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