Compare any two graphics cards:
GeForce GTX 480 vs GeForce GTX 660
IntroThe GeForce GTX 480 uses a 40 nm design. nVidia has set the core speed at 700 MHz. The GDDR5 memory is set to run at a speed of 924 MHz on this specific model. It features 480 SPUs along with 60 Texture Address Units and 48 Rasterization Operator Units.
Compare those specifications to the GeForce GTX 660, which uses a 28 nm design. nVidia has set the core speed at 980 MHz. The GDDR5 RAM is set to run at a frequency of 1502 MHz on this card. It features 960 SPUs along with 80 TAUs and 24 ROPs.
(No game benchmarks for this combination yet.)
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
Performance-wise, the GeForce GTX 480 should theoretically be a lot superior to the GeForce GTX 660 in general. (explain)
Texel RateThe GeForce GTX 660 is much (approximately 87%) more effective at AF than the GeForce GTX 480. (explain)
Pixel RateThe GeForce GTX 480 is quite a bit (approximately 43%) more effective at FSAA than the GeForce GTX 660, and will be able to handle higher resolutions without slowing down too much. (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: Bandwidth is the maximum amount of information (measured in MB per second) that can be moved across the external memory interface in one second. It's calculated by multiplying the bus width by its memory speed. If it uses DDR type 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 anti-aliasing, High Dynamic Range and higher screen resolutions.
Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This number is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher 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 one second.
Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called 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, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.