Compare any two graphics cards:
GeForce 8600 GTS vs Radeon HD 5570
IntroThe GeForce 8600 GTS comes with a core clock frequency of 675 MHz and a GDDR3 memory frequency of 1000 MHz. It also makes use of a 128-bit bus, and uses a 80 nm design. It is comprised of 32 SPUs, 16 TAUs, and 8 Raster Operation Units.
Compare those specifications to the Radeon HD 5570, which features a core clock speed of 650 MHz and a DDR3 memory frequency of 900 MHz. It also uses a 128-bit memory bus, and uses a 40 nm design. It features 400(80x5) SPUs, 20 Texture Address Units, and 8 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
The GeForce 8600 GTS should theoretically perform a little bit faster than the Radeon HD 5570 in general. (explain)
Texel RateThe Radeon HD 5570 is a little bit (more or less 20%) more effective at texture filtering than the GeForce 8600 GTS. (explain)
Pixel RateThe GeForce 8600 GTS will be a bit (more or less 4%) faster with regards to full screen anti-aliasing than the Radeon HD 5570, and also will be capable of handling 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 maximum amount of information (in units of megabytes per second) that can be transferred across the external memory interface in a second. It's calculated by multiplying the interface width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 once 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, High Dynamic Range and high resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.
Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.