Compare any two graphics cards:
GeForce GTX 550 Ti vs Radeon HD 5870
IntroThe GeForce GTX 550 Ti features a clock frequency of 900 MHz and a GDDR5 memory speed of 1026 MHz. It also uses a 192-bit bus, and uses a 40 nm design. It is made up of 192 SPUs, 32 TAUs, and 24 ROPs.
Compare those specifications to the Radeon HD 5870, which makes use of a 40 nm design. ATi has set the core speed at 850 MHz. The GDDR5 memory runs at a speed of 1200 MHz on this model. It features 1600(320x5) SPUs along with 80 TAUs and 32 Rasterization Operator Units.
(No game benchmarks for this combination yet.)
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
In theory, the Radeon HD 5870 should be 56% quicker than the GeForce GTX 550 Ti overall, due to its higher bandwidth. (explain)
Texel RateThe Radeon HD 5870 is a lot (more or less 136%) more effective at AF than the GeForce GTX 550 Ti. (explain)
Pixel RateIf using high levels of AA is important to you, then the Radeon HD 5870 is a better choice, by a large margin. (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: Bandwidth is the maximum amount of information (counted in MB per second) that can be transferred over the external memory interface within a second. It's worked out by multiplying the interface width by its memory speed. If the card has DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better 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 number of texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.
Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.