Compare any two graphics cards:
GeForce GTX 580 3GB vs Radeon HD 5770
IntroThe GeForce GTX 580 3GB makes use of a 40 nm design. nVidia has clocked the core speed at 772 MHz. The GDDR5 memory is set to run at a speed of 1002 MHz on this specific model. It features 512 SPUs along with 64 Texture Address Units and 48 ROPs.
Compare those specs to the Radeon HD 5770, which makes use of a 40 nm design. ATi has clocked the core speed at 850 MHz. The GDDR5 memory works at a frequency of 1200 MHz on this particular model. It features 800(160x5) SPUs along with 40 TAUs and 16 ROPs.
(No game benchmarks for this combination yet.)
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
The GeForce GTX 580 3GB should in theory be much faster than the Radeon HD 5770 overall. (explain)
Texel RateThe GeForce GTX 580 3GB will be a lot (more or less 45%) faster with regards to texture filtering than the Radeon HD 5770. (explain)
Pixel RateThe GeForce GTX 580 3GB should be a lot (about 172%) more effective at full screen anti-aliasing than the Radeon HD 5770, and also able to handle higher screen resolutions while still performing well. (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.
Price ComparisonPlease note that the price comparisons are based on search keywords, and might not be the exact same card listed on this page. We have no control over the accuracy of their search results.
Memory Bandwidth: Memory bandwidth is the max amount of information (in units of MB per second) that can be transferred across the external memory interface in one second. It's worked out by multiplying the bus width by its memory clock speed. If the card has DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, 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 amount of texture map elements (texels) that are applied per second. This is worked out by multiplying the total amount of texture units of the card by the core 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 applied in a second.
Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.