Compare any two graphics cards:
GeForce GTX 460 (OEM) vs GeForce GTX 460 2GB
IntroThe GeForce GTX 460 (OEM) comes with a GPU core speed of 650 MHz, and the 1024 MB of GDDR5 memory runs at 850 MHz through a 256-bit bus. It also features 336 Stream Processors, 56 Texture Address Units, and 32 Raster Operation Units.
Compare those specifications to the GeForce GTX 460 2GB, which uses a 40 nm design. nVidia has set the core frequency at 675 MHz. The GDDR5 memory runs at a speed of 900 MHz on this particular card. It features 336 SPUs as well as 56 TAUs and 32 Rasterization Operator Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
Theoretically speaking, the GeForce GTX 460 2GB is 6% faster than the GeForce GTX 460 (OEM) overall, because of its greater bandwidth. (explain)
Texel RateThe GeForce GTX 460 2GB should be just a bit (about 4%) better at texture filtering than the GeForce GTX 460 (OEM). (explain)
Pixel RateThe GeForce GTX 460 2GB will be a little bit (approximately 4%) faster with regards to full screen anti-aliasing than the GeForce GTX 460 (OEM), and will be capable of handling higher 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: Bandwidth is the maximum amount of information (in units of megabytes per second) that can be transported over the external memory interface in one second. It is worked out by multiplying the bus width by its memory speed. If it uses DDR type memory, it must 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 anti-aliasing, HDR and high resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.
Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record 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 filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.