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Radeon HD 5570 vs Radeon HD 6570 (OEM) 1GB

Intro

The Radeon HD 5570 comes with a clock frequency of 650 MHz and a DDR3 memory frequency of 900 MHz. It also features a 128-bit memory bus, and makes use of a 40 nm design. It is made up of 400(80x5) SPUs, 20 TAUs, and 8 ROPs.

Compare all of that to the Radeon HD 6570 (OEM) 1GB, which makes use of a 40 nm design. AMD has clocked the core frequency at 650 MHz. The GDDR3 memory works at a speed of 900 MHz on this particular card. It features 480 SPUs as well as 24 Texture Address Units and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5570 43 Watts
Radeon HD 6570 (OEM) 1GB 50 Watts
Difference: 7 Watts (16%)

Memory Bandwidth

Both cards have the exact same bandwidth, so in theory they should perform the same. (explain)

Texel Rate

The Radeon HD 6570 (OEM) 1GB will be just a bit (approximately 20%) more effective at texture filtering than the Radeon HD 5570. (explain)

Radeon HD 6570 (OEM) 1GB 15600 Mtexels/sec
Radeon HD 5570 13000 Mtexels/sec
Difference: 2600 (20%)

Pixel Rate

Both cards have the exact same pixel rate, so theoretically they should be equally good at at full screen anti-aliasing, and be able to handle the same screen resolutions. (explain)

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 6570 (OEM) 1GB

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 6570 (OEM) 1GB
Manufacturer AMD AMD
Year February 9, 2010 February 2011
Code Name Redwood PRO Turks
Memory 512 MB 1024 MB
Core Speed 650 MHz 650 MHz
Memory Speed 1800 MHz 1800 MHz
Power (Max TDP) 43 watts 50 watts
Bandwidth 28800 MB/sec 28800 MB/sec
Texel Rate 13000 Mtexels/sec 15600 Mtexels/sec
Pixel Rate 5200 Mpixels/sec 5200 Mpixels/sec
Unified Shaders 400(80x5) 480
Texture Mapping Units 20 24
Render Output Units 8 8
Bus Type DDR3 GDDR3
Bus Width 128-bit 128-bit
Fab Process 40 nm 40 nm
Transistors 627 million 715 million
Bus PCIe 2.1 x16 PCIe 2.1 x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 3.2 OpenGL 4.1

Memory Bandwidth: Bandwidth is the maximum amount of data (counted in megabytes per second) that can be transferred over the external memory interface in a second. It's worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core 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 output rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

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