Compare any two graphics cards:
GeForce GTX 570 vs Radeon HD 5870
IntroThe GeForce GTX 570 makes use of a 40 nm design. nVidia has set the core frequency at 732 MHz. The GDDR5 memory works at a speed of 950 MHz on this card. It features 480 SPUs as well as 60 TAUs and 40 Rasterization Operator Units.Compare all that to the Radeon HD 5870, which uses a 40 nm design. ATi has clocked the core speed at 850 MHz. The GDDR5 RAM runs at a speed of 1200 MHz on this specific card. It features 1600(320x5) SPUs as well as 80 Texture Address Units and 32 ROPs.
(No game benchmarks for this combination yet.)
Power Usage and Theoretical BenchmarksPower Consumption (Max TDP)
Memory BandwidthIn theory, the Radeon HD 5870 should perform a bit faster than the GeForce GTX 570 in general. (explain)
Texel RateThe Radeon HD 5870 should be much (approximately 55%) more effective at texture filtering than the GeForce GTX 570. (explain)
Pixel RateIf running with a high screen resolution is important to you, then the GeForce GTX 570 is superior to the Radeon HD 5870, but only just. (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.
Specifications
Memory Bandwidth: Bandwidth is the largest amount of information (measured in megabytes per second) that can be moved past the external memory interface within a second. It is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, 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 in one second. This figure is worked out by multiplying the total amount of texture units 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 processed per second. Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the card's 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 fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.
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Comments
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