Compare any two graphics cards:
GeForce 8400 GS 512MB vs GeForce GT 430 (OEM)
IntroThe GeForce 8400 GS 512MB has a core clock frequency of 650 MHz and a DDR2 memory frequency of 400 MHz. It also uses a 64-bit memory bus, and uses a 80 nm design. It features 16 SPUs, 8 TAUs, and 4 ROPs.
Compare all that to the GeForce GT 430 (OEM), which has a clock frequency of 700 MHz and a GDDR3 memory frequency of 900 MHz. It also uses a 128-bit bus, and uses a 40 nm design. It is made up of 96 SPUs, 16 TAUs, and 4 Raster Operation Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
Performance-wise, the GeForce GT 430 (OEM) should in theory be quite a bit better than the GeForce 8400 GS 512MB overall. (explain)
Texel RateThe GeForce GT 430 (OEM) will be quite a bit (approximately 115%) more effective at anisotropic filtering than the GeForce 8400 GS 512MB. (explain)
Pixel RateThe GeForce GT 430 (OEM) is a bit (approximately 8%) more effective at full screen anti-aliasing than the GeForce 8400 GS 512MB, and will be capable of handling higher screen 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: Memory bandwidth is the maximum amount of information (in units of megabytes per second) that can be transported across the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.
Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.