Radeon HD 6570 (OEM) 2GB vs Radeon R7 250

Intro

The Radeon HD 6570 (OEM) 2GB features a core clock frequency of 650 MHz and a GDDR5 memory speed of 1000 MHz. It also uses a 128-bit memory bus, and uses a 40 nm design. It is made up of 480 SPUs, 24 Texture Address Units, and 8 Raster Operation Units.

Compare all of that to the Radeon R7 250, which has core clock speeds of 1000 MHz on the GPU, and 1150 MHz on the 1024 MB of GDDR5 memory. It features 384 SPUs as well as 24 TAUs and 8 ROPs.

Price Comparison

Radeon HD 6570 (OEM) 2GB Amazon.com

Radeon R7 250 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

Model	Radeon HD 6570 (OEM) 2GB	Radeon R7 250
Manufacturer	AMD	AMD
Year	February 2011	October 2013
Code Name	Turks	Oland XT
Fab Process	40 nm	28 nm
Bus	PCIe 2.1 x16	PCIe 3.0 x16
Memory	1024 MB	1024 MB
Core Speed	650 MHz	1000 MHz
Shader Speed	N/A MHz	(N/A) MHz
Memory Speed	1000 MHz (4000 MHz effective)	1150 MHz (4600 MHz effective)
Unified Shaders	480	384
Texture Mapping Units	24	24
Render Output Units	8	8
Bus Type	GDDR5	GDDR5
Bus Width	128-bit	128-bit
DirectX Version	DirectX 11	DirectX 11.2
OpenGL Version	OpenGL 4.1	OpenGL 4.3
Power (Max TDP)	50 watts	65 watts
Shader Model	5.0	5.0
Bandwidth	64000 MB/sec	73600 MB/sec
Texel Rate	15600 Mtexels/sec	24000 Mtexels/sec
Pixel Rate	5200 Mpixels/sec	8000 Mpixels/sec

Memory Bandwidth: Bandwidth is the max amount of information (in units of MB per second) that can be transferred across the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen 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 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 applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units 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 rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.