Compare any two graphics cards:
GeForce GTX 275 vs GeForce GTX 560 Ti
IntroThe GeForce GTX 275 makes use of a 55 nm design. nVidia has clocked the core speed at 633 MHz. The GDDR3 memory runs at a frequency of 1134 MHz on this particular card. It features 240 SPUs along with 80 TAUs and 28 Rasterization Operator Units.
Compare all of that to the GeForce GTX 560 Ti, which features a clock frequency of 822 MHz and a GDDR5 memory frequency of 1002 MHz. It also features a 256-bit bus, and uses a 40 nm design. It is made up of 384 SPUs, 64 TAUs, and 32 Raster Operation Units.
(No game benchmarks for this combination yet.)
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
In theory, the GeForce GTX 560 Ti should perform a bit faster than the GeForce GTX 275 overall. (explain)
Texel RateThe GeForce GTX 560 Ti will be a bit (more or less 4%) more effective at texture filtering than the GeForce GTX 275. (explain)
Pixel RateIf using lots of anti-aliasing is important to you, then the GeForce GTX 560 Ti is superior to the GeForce GTX 275, 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.
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: Memory bandwidth is the largest amount of data (measured in megabytes per second) that can be transported over the external memory interface within a second. The number is calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR type memory, it should be multiplied by 2 again. If it uses 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, HDR and high resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.
Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the card's 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 rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.