Compare any two graphics cards:
GeForce 8400 GS 512MB vs GeForce GT 430 (OEM)
IntroThe GeForce 8400 GS 512MB features a GPU core clock speed of 650 MHz, and the 512 MB of DDR2 memory runs at 400 MHz through a 64-bit bus. It also features 16 Stream Processors, 8 Texture Address Units, and 4 Raster Operation Units.
Compare all that to the GeForce GT 430 (OEM), which uses a 40 nm design. nVidia has set the core frequency at 700 MHz. The GDDR3 memory works at a speed of 900 MHz on this specific card. It features 96 SPUs as well as 16 TAUs and 4 Rasterization Operator Units.
(No game benchmarks for this combination yet.)
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
Theoretically speaking, the GeForce GT 430 (OEM) should be 350% faster than the GeForce 8400 GS 512MB overall, because of its higher data rate. (explain)
Texel RateThe GeForce GT 430 (OEM) should be much (approximately 115%) faster with regards to texture filtering than the GeForce 8400 GS 512MB. (explain)
Pixel RateIf running with high levels of AA is important to you, then the GeForce GT 430 (OEM) is superior to the GeForce 8400 GS 512MB, but it probably won't make a huge difference. (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 data (measured in MB per second) that can be transported across the external memory interface in a second. The number is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster 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 can be applied in one second. This figure is worked out by multiplying the total texture units by the core clock 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 most pixels the video card can possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.