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


Intro

The Radeon HD 5570 comes with clock speeds of 650 MHz on the GPU, and 900 MHz on the 512 MB of DDR3 memory. It features 400(80x5) SPUs as well as 20 TAUs and 8 Rasterization Operator Units.

Compare all that to the Radeon HD 6570 (OEM) 1GB, which makes use of a 40 nm design. AMD has clocked the core speed at 650 MHz. The GDDR3 RAM is set to run at a speed of 900 MHz on this model. It features 480 SPUs along with 24 Texture Address Units and 8 ROPs.

Display Graphs

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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 theoretically they should perform exactly the same. (explain)

Texel Rate

The Radeon HD 6570 (OEM) 1GB is a bit (approximately 20%) better 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 exactly the same pixel fill rate, so theoretically they should perform equally good at at AA, 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

Radeon HD 5570

Radeon HD 6570 (OEM) 1GB

Specifications

Display 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 largest amount of information (counted in megabytes per second) that can be transported over the external memory interface within a second. The number is calculated by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster 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 processed per second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the video 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 amount of pixels that the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.

Radeon HD 5570

Radeon HD 6570 (OEM) 1GB

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