Compare any two graphics cards:
GeForce GTX 260 216SP 55 nm vs GeForce GTX 460 SE
IntroThe GeForce GTX 260 216SP 55 nm uses a 55 nm design. nVidia has set the core speed at 576 MHz. The GDDR3 RAM runs at a frequency of 999 MHz on this model. It features 216 SPUs along with 72 TAUs and 28 ROPs.
Compare that to the GeForce GTX 460 SE, which has core clock speeds of 650 MHz on the GPU, and 850 MHz on the 1024 MB of GDDR5 RAM. It features 288 SPUs as well as 48 Texture Address Units and 32 Rasterization Operator Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
As far as performance goes, the GeForce GTX 260 216SP 55 nm should in theory be a bit superior to the GeForce GTX 460 SE overall. (explain)
Texel RateThe GeForce GTX 260 216SP 55 nm is a lot (about 33%) better at AF than the GeForce GTX 460 SE. (explain)
Pixel RateThe GeForce GTX 460 SE will be quite a bit (about 29%) faster with regards to AA than the GeForce GTX 260 216SP 55 nm, and should be able to handle 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: Memory bandwidth is the largest amount of data (counted in megabytes per second) that can be moved past the external memory interface within a second. It is worked out by multiplying the interface width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR 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 calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.
Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.