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Radeon HD 5570 vs Radeon HD 7870

Intro

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

Compare those specs to the Radeon HD 7870, which comes with a clock speed of 1000 MHz and a GDDR5 memory speed of 1200 MHz. It also uses a 256-bit memory bus, and uses a 28 nm design. It is made up of 1280 SPUs, 80 TAUs, and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5570 43 Watts
Radeon HD 7870 175 Watts
Difference: 132 Watts (307%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 7870 should be a lot faster than the Radeon HD 5570 in general. (explain)

Radeon HD 7870 153600 MB/sec
Radeon HD 5570 28800 MB/sec
Difference: 124800 (433%)

Texel Rate

The Radeon HD 7870 should be a lot (approximately 515%) faster with regards to anisotropic filtering than the Radeon HD 5570. (explain)

Radeon HD 7870 80000 Mtexels/sec
Radeon HD 5570 13000 Mtexels/sec
Difference: 67000 (515%)

Pixel Rate

The Radeon HD 7870 should be much (about 515%) better at full screen anti-aliasing than the Radeon HD 5570, and also will be able to handle higher screen resolutions without losing too much performance. (explain)

Radeon HD 7870 32000 Mpixels/sec
Radeon HD 5570 5200 Mpixels/sec
Difference: 26800 (515%)

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 7870

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 7870
Manufacturer AMD AMD
Year February 9, 2010 March 2012
Code Name Redwood PRO Pitcairn XT
Memory 512 MB 2048 MB
Core Speed 650 MHz 1000 MHz
Memory Speed 1800 MHz 4800 MHz
Power (Max TDP) 43 watts 175 watts
Bandwidth 28800 MB/sec 153600 MB/sec
Texel Rate 13000 Mtexels/sec 80000 Mtexels/sec
Pixel Rate 5200 Mpixels/sec 32000 Mpixels/sec
Unified Shaders 400(80x5) 1280
Texture Mapping Units 20 80
Render Output Units 8 32
Bus Type DDR3 GDDR5
Bus Width 128-bit 256-bit
Fab Process 40 nm 28 nm
Transistors 627 million 2800 million
Bus PCIe 2.1 x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.1
OpenGL Version OpenGL 3.2 OpenGL 4.2

Memory Bandwidth: Memory bandwidth is the max amount of information (counted in megabytes per second) that can be moved past the external memory interface in one second. It's 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 it uses DDR5, multiply by ANOTHER 2x. The higher 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 processed per second. This figure is calculated by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

Radeon HD 5570

Amazon.com

Check prices at:

Radeon HD 7870

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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