Compare any two graphics cards:
Radeon HD 6570 (OEM) 2GB vs Radeon R7 240
IntroThe Radeon HD 6570 (OEM) 2GB uses a 40 nm design. AMD has clocked the core speed at 650 MHz. The GDDR5 RAM works at a speed of 1000 MHz on this particular model. It features 480 SPUs along with 24 TAUs and 8 ROPs.
Compare all of that to the Radeon R7 240, which features a clock speed of 730 MHz and a DDR3 memory speed of 900 MHz. It also features a 128-bit memory bus, and uses a 28 nm design. It is made up of 320 SPUs, 20 TAUs, and 8 Raster Operation Units.
(No game benchmarks for this combination yet.)
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
The Radeon HD 6570 (OEM) 2GB should theoretically be quite a bit faster than the Radeon R7 240 overall. (explain)
Texel RateThe Radeon HD 6570 (OEM) 2GB should be a little bit (more or less 7%) faster with regards to texture filtering than the Radeon R7 240. (explain)
Pixel RateThe Radeon R7 240 should be a bit (about 12%) faster with regards to AA than the Radeon HD 6570 (OEM) 2GB, and will be able to handle higher screen resolutions without slowing down too much. (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.
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.
Memory Bandwidth: Bandwidth is the largest amount of information (in units of megabytes per second) that can be transported across the external memory interface within a second. It is worked out by multiplying the bus width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.
Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This number is worked out by multiplying the total 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.
Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.