Compare any two graphics cards:
Radeon HD 5870 vs Radeon HD 6870
IntroThe Radeon HD 5870 uses a 40 nm design. ATi has clocked the core speed at 850 MHz. The GDDR5 memory is set to run at a frequency of 1200 MHz on this particular model. It features 1600(320x5) SPUs along with 80 TAUs and 32 Rasterization Operator Units.
Compare those specs to the Radeon HD 6870, which makes use of a 40 nm design. ATi has clocked the core frequency at 900 MHz. The GDDR5 memory works at a frequency of 1050 MHz on this model. It features 1120 SPUs along with 56 TAUs and 32 ROPs.
(No game benchmarks for this combination yet.)
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
The Radeon HD 5870, in theory, should perform a little bit faster than the Radeon HD 6870 in general. (explain)
Texel RateThe Radeon HD 5870 is much (approximately 35%) more effective at texture filtering than the Radeon HD 6870. (explain)
Pixel RateThe Radeon HD 6870 is a small bit (more or less 6%) faster with regards to anti-aliasing than the Radeon HD 5870, 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.
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 maximum amount of information (measured in megabytes per second) that can be moved across the external memory interface in one second. It's calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better 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 can be processed per second. This figure is worked out by multiplying the total texture units by the core speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.
Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can 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 Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.