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Radeon HD 5570 vs Radeon HD 7850

Intro

The Radeon HD 5570 has a GPU core clock speed of 650 MHz, and the 512 MB of DDR3 RAM runs at 900 MHz through a 128-bit bus. It also is comprised of 400(80x5) SPUs, 20 Texture Address Units, and 8 ROPs.

Compare those specs to the Radeon HD 7850, which makes use of a 28 nm design. AMD has set the core frequency at 860 MHz. The GDDR5 RAM runs at a frequency of 1200 MHz on this specific card. It features 1024 SPUs along with 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

The Radeon HD 7850 should in theory 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 is quite a bit (about 323%) more effective at 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 is much (approximately 429%) better at FSAA than the Radeon HD 5570, and able to handle higher screen 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

Radeon HD 7850

Amazon.com

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: Bandwidth is the max amount of data (measured in MB per second) that can be moved over the external memory interface in a second. It's worked out by multiplying the bus width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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Radeon HD 5570

Amazon.com

Radeon HD 7850

Amazon.com

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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