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Radeon HD 5570 vs Radeon HD 7850

Intro

The Radeon HD 5570 has 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 Rasterization Operator Units.

Compare that to the Radeon HD 7850, which comes with a clock frequency of 860 MHz and a GDDR5 memory speed of 1200 MHz. It also uses a 256-bit bus, and uses a 28 nm design. It is made up of 1024 SPUs, 64 TAUs, and 32 ROPs.

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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

In theory, the Radeon HD 7850 should be 433% faster than the Radeon HD 5570 in general, because of its greater data rate. (explain)

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

Texel Rate

The Radeon HD 7850 will be a lot (more or less 323%) faster with regards to texture filtering than the Radeon HD 5570. (explain)

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

Pixel Rate

The Radeon HD 7850 will be much (approximately 429%) faster with regards to AA than the Radeon HD 5570, and will be capable of handling higher resolutions better. (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 (in units of megabytes per second) that can be transported across the external memory interface in a second. It is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the core speed of the card. 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 is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

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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