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Radeon HD 6570 (OEM) 2GB vs Radeon R5 M255

Intro

The Radeon HD 6570 (OEM) 2GB has a clock frequency of 650 MHz and a GDDR5 memory speed of 1000 MHz. It also uses a 128-bit bus, and makes use of a 40 nm design. It is comprised of 480 SPUs, 24 TAUs, and 8 Raster Operation Units.

Compare those specifications to the Radeon R5 M255, which has GPU core speed of 940 MHz, and 2048 MB of DDR3 RAM running at 1000 MHz through a 64-bit bus. It also is comprised of 320 Stream Processors, 20 TAUs, and 8 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the Radeon HD 6570 (OEM) 2GB should perform much faster than the Radeon R5 M255 overall. (explain)

Radeon HD 6570 (OEM) 2GB 64000 MB/sec
Radeon R5 M255 16000 MB/sec
Difference: 48000 (300%)

Texel Rate

The Radeon R5 M255 will be a lot (approximately 21%) faster with regards to AF than the Radeon HD 6570 (OEM) 2GB. (explain)

Radeon R5 M255 18800 Mtexels/sec
Radeon HD 6570 (OEM) 2GB 15600 Mtexels/sec
Difference: 3200 (21%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R5 M255 is the winner, by a large margin. (explain)

Radeon R5 M255 7520 Mpixels/sec
Radeon HD 6570 (OEM) 2GB 5200 Mpixels/sec
Difference: 2320 (45%)

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 6570 (OEM) 2GB

Amazon.com

Check prices at:

Radeon R5 M255

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 6570 (OEM) 2GB Radeon R5 M255
Manufacturer AMD AMD
Year February 2011 June 2014
Code Name Turks Jet Pro
Memory 1024 MB 2048 MB
Core Speed 650 MHz 940 MHz
Memory Speed 4000 MHz 2000 MHz
Power (Max TDP) 50 watts (Unknown) watts
Bandwidth 64000 MB/sec 16000 MB/sec
Texel Rate 15600 Mtexels/sec 18800 Mtexels/sec
Pixel Rate 5200 Mpixels/sec 7520 Mpixels/sec
Unified Shaders 480 320
Texture Mapping Units 24 20
Render Output Units 8 8
Bus Type GDDR5 DDR3
Bus Width 128-bit 64-bit
Fab Process 40 nm 28 nm
Transistors 715 million (Unknown) million
Bus PCIe 2.1 x16 PCIe 3.0 x8
DirectX Version DirectX 11 DirectX 11.2
OpenGL Version OpenGL 4.1 OpenGL 4.3

Memory Bandwidth: Bandwidth is the max amount of data (measured in megabytes per second) that can be transferred across the external memory interface in one second. It is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total amount of texture units by the core 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 applied in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of 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 6570 (OEM) 2GB

Amazon.com

Check prices at:

Radeon R5 M255

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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