Compare any two graphics cards:
GeForce GTX 460 vs GeForce GTX 660
IntroThe GeForce GTX 460 has a core clock speed of 675 MHz and a GDDR5 memory speed of 900 MHz. It also uses a 192-bit bus, and makes use of a 40 nm design. It features 336 SPUs, 56 Texture Address Units, and 24 ROPs.
Compare all that to the GeForce GTX 660, which has a core clock frequency of 980 MHz and a GDDR5 memory speed of 1502 MHz. It also makes use of a 192-bit memory bus, and makes use of a 28 nm design. It is made up of 960 SPUs, 80 TAUs, and 24 Raster Operation Units.
(No game benchmarks for this combination yet.)
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
Performance-wise, the GeForce GTX 660 should theoretically be much better than the GeForce GTX 460 overall. (explain)
Texel RateThe GeForce GTX 660 should be much (more or less 107%) better at AF than the GeForce GTX 460. (explain)
Pixel RateThe GeForce GTX 660 should be a lot (approximately 45%) more effective at FSAA than the GeForce GTX 460, and also will be capable of handling 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.
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 information (in units of megabytes 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 it uses DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.
Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the card's clock speed. 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 output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.