Compare any two graphics cards:
GeForce 8600 GT 1GB DDR2 vs GeForce 9500 GT DDR2
IntroThe GeForce 8600 GT 1GB DDR2 uses a 80 nm design. nVidia has set the core frequency at 540 MHz. The DDR2 memory works at a speed of 400 MHz on this specific model. It features 32 SPUs as well as 16 TAUs and 8 ROPs.
Compare all that to the GeForce 9500 GT DDR2, which makes use of a 65 nm design. nVidia has set the core speed at 550 MHz. The DDR2 RAM works at a frequency of 500 MHz on this specific model. It features 32 SPUs as well as 16 TAUs and 8 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
Theoretically speaking, the GeForce 9500 GT DDR2 is 25% quicker than the GeForce 8600 GT 1GB DDR2 overall, because of its higher data rate. (explain)
Texel RateThe GeForce 9500 GT DDR2 is a little bit (more or less 2%) faster with regards to texture filtering than the GeForce 8600 GT 1GB DDR2. (explain)
Pixel RateThe GeForce 9500 GT DDR2 is a small bit (about 2%) more effective at anti-aliasing than the GeForce 8600 GT 1GB DDR2, and also 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 max amount of data (measured in MB per second) that can be moved over the external memory interface within a second. It's worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 per second. This number is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.
Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.