Compare any two graphics cards:
GeForce 8800 GTS (G92) vs GeForce 9800 GTX+
IntroThe GeForce 8800 GTS (G92) comes with a core clock speed of 650 MHz and a GDDR3 memory speed of 970 MHz. It also uses a 256-bit bus, and uses a 65 nm design. It features 128 SPUs, 64 TAUs, and 16 Raster Operation Units.
Compare those specifications to the GeForce 9800 GTX+, which makes use of a 55 nm design. nVidia has clocked the core speed at 738 MHz. The GDDR3 memory works at a frequency of 1100 MHz on this particular model. It features 128 SPUs along with 64 TAUs and 16 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
In theory, the GeForce 9800 GTX+ is 13% faster than the GeForce 8800 GTS (G92) overall, due to its greater bandwidth. (explain)
Texel RateThe GeForce 9800 GTX+ will be just a bit (about 14%) more effective at AF than the GeForce 8800 GTS (G92). (explain)
Pixel RateThe GeForce 9800 GTX+ is a bit (more or less 14%) more effective at FSAA than the GeForce 8800 GTS (G92), and capable of handling higher screen resolutions more effectively. (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 largest amount of data (counted in MB per second) that can be transported over the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory speed. In the case of DDR memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the 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 maximum number of pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.