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Radeon HD 6570 (OEM) 2GB vs Radeon R9 M275X

Intro

The Radeon HD 6570 (OEM) 2GB uses a 40 nm design. AMD has clocked the core speed at 650 MHz. The GDDR5 memory is set to run at a frequency of 1000 MHz on this particular model. It features 480 SPUs along with 24 TAUs and 8 ROPs.

Compare those specifications to the Radeon R9 M275X, which features a clock speed of 900 MHz and a GDDR5 memory speed of 1125 MHz. It also features a 128-bit memory bus, and uses a 28 nm design. It features 640 SPUs, 40 TAUs, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

Performance-wise, the Radeon R9 M275X should theoretically be a bit better than the Radeon HD 6570 (OEM) 2GB in general. (explain)

Radeon R9 M275X		72000 MB/sec
Radeon HD 6570 (OEM) 2GB		64000 MB/sec
	Difference: 8000 (13%)

Texel Rate

The Radeon R9 M275X is a lot (approximately 131%) faster with regards to anisotropic filtering than the Radeon HD 6570 (OEM) 2GB. (explain)

Radeon R9 M275X		36000 Mtexels/sec
Radeon HD 6570 (OEM) 2GB		15600 Mtexels/sec
	Difference: 20400 (131%)

Pixel Rate

The Radeon R9 M275X should be quite a bit (about 177%) faster with regards to AA than the Radeon HD 6570 (OEM) 2GB, and also should be able to handle higher screen resolutions better. (explain)

Radeon R9 M275X		14400 Mpixels/sec
Radeon HD 6570 (OEM) 2GB		5200 Mpixels/sec
	Difference: 9200 (177%)

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

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Radeon R9 M275X

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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 R9 M275X
Manufacturer	AMD	AMD
Year	February 2011	May 1 2014
Code Name	Turks	Venus XTX
Memory	1024 MB	2048 MB
Core Speed	650 MHz	900 MHz
Memory Speed	4000 MHz	4500 MHz
Power (Max TDP)	50 watts	50 watts
Bandwidth	64000 MB/sec	72000 MB/sec
Texel Rate	15600 Mtexels/sec	36000 Mtexels/sec
Pixel Rate	5200 Mpixels/sec	14400 Mpixels/sec
Unified Shaders	480	640
Texture Mapping Units	24	40
Render Output Units	8	16
Bus Type	GDDR5	GDDR5
Bus Width	128-bit	128-bit
Fab Process	40 nm	28 nm
Transistors	715 million	(Unknown) million
Bus	PCIe 2.1 x16	PCIe 3.0 x16
DirectX Version	DirectX 11	DirectX 11.2
OpenGL Version	OpenGL 4.1	OpenGL 4.3

Memory Bandwidth: Bandwidth is the max amount of information (counted in megabytes per second) that can be moved past the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the 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 chip can possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.

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