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Radeon HD 5570 vs Radeon HD 7850

Intro

The Radeon HD 5570 uses a 40 nm design. AMD has clocked the core speed at 650 MHz. The DDR3 memory runs at a frequency of 900 MHz on this particular card. It features 400(80x5) SPUs along with 20 Texture Address Units and 8 Rasterization Operator Units.

Compare all that to the Radeon HD 7850, which makes use of a 28 nm design. AMD has set the core frequency at 860 MHz. The GDDR5 memory is set to run at a speed of 1200 MHz on this card. It features 1024 SPUs as well as 64 TAUs and 32 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5570 43 Watts
Radeon HD 7850 130 Watts
Difference: 87 Watts (202%)

Memory Bandwidth

The Radeon HD 7850, in theory, should perform a lot faster than the Radeon HD 5570 overall. (explain)

Radeon HD 7850 153600 MB/sec
Radeon HD 5570 28800 MB/sec
Difference: 124800 (433%)

Texel Rate

The Radeon HD 7850 should be quite a bit (approximately 323%) more effective at AF than the Radeon HD 5570. (explain)

Radeon HD 7850 55040 Mtexels/sec
Radeon HD 5570 13000 Mtexels/sec
Difference: 42040 (323%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 7850 is the winner, and very much so. (explain)

Radeon HD 7850 27520 Mpixels/sec
Radeon HD 5570 5200 Mpixels/sec
Difference: 22320 (429%)

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 7850

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 7850
Manufacturer AMD AMD
Year February 9, 2010 March 2012
Code Name Redwood PRO Pitcairn Pro
Memory 512 MB 2048 MB
Core Speed 650 MHz 860 MHz
Memory Speed 1800 MHz 4800 MHz
Power (Max TDP) 43 watts 130 watts
Bandwidth 28800 MB/sec 153600 MB/sec
Texel Rate 13000 Mtexels/sec 55040 Mtexels/sec
Pixel Rate 5200 Mpixels/sec 27520 Mpixels/sec
Unified Shaders 400(80x5) 1024
Texture Mapping Units 20 64
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 data (counted in MB per second) that can be moved past the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory speed. In the case of DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel 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

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Radeon HD 5570

Amazon.com

Check prices at:

Radeon HD 7850

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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