Compare any two graphics cards:
Radeon HD 6570 (OEM) 2GB vs Radeon R7 240
IntroThe Radeon HD 6570 (OEM) 2GB makes use of 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 specific model. It features 480 SPUs along with 24 TAUs and 8 ROPs.
Compare those specifications to the Radeon R7 240, which has a core clock speed of 730 MHz and a DDR3 memory speed of 900 MHz. It also uses a 128-bit bus, and uses a 28 nm design. It features 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)
As far as performance goes, the Radeon HD 6570 (OEM) 2GB should in theory be quite a bit superior to the Radeon R7 240 overall. (explain)
Texel RateThe Radeon HD 6570 (OEM) 2GB will be just a bit (about 7%) faster with regards to AF than the Radeon R7 240. (explain)
Pixel RateThe Radeon R7 240 will be a little bit (more or less 12%) more effective at AA than the Radeon HD 6570 (OEM) 2GB, and should be able to handle higher screen resolutions more effectively. (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: Memory bandwidth is the max amount of data (in units of megabytes per second) that can be transferred over the external memory interface in a second. It's calculated by multiplying the bus width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.
Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs 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 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.