Compare any two graphics cards:
GeForce 8400 GS 512MB vs GeForce GTS 450 1GB
IntroThe GeForce 8400 GS 512MB features a core clock frequency of 650 MHz and a DDR2 memory speed of 400 MHz. It also uses a 64-bit memory bus, and makes use of a 80 nm design. It is made up of 16 SPUs, 8 Texture Address Units, and 4 ROPs.Compare that to the GeForce GTS 450 1GB, which features a core clock speed of 783 MHz and a GDDR5 memory speed of 902 MHz. It also features a 128-bit memory bus, and makes use of a 40 nm design. It is comprised of 192 SPUs, 32 TAUs, and 16 ROPs.
Display Graphs
Power Usage and Theoretical BenchmarksPower Consumption (Max TDP)
Memory BandwidthTheoretically speaking, the GeForce GTS 450 1GB should perform quite a bit faster than the GeForce 8400 GS 512MB in general. (explain)
Texel RateThe GeForce GTS 450 1GB should be much (more or less 382%) better at AF than the GeForce 8400 GS 512MB. (explain)
Pixel RateThe GeForce GTS 450 1GB will be quite a bit (about 382%) more effective at full screen anti-aliasing than the GeForce 8400 GS 512MB, and also will be capable of handling higher screen 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. Price Comparison
Display Prices
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. Specifications
Display Specifications
Memory Bandwidth: Memory bandwidth is the largest amount of data (measured in megabytes per second) that can be transported past the external memory interface in one second. It is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions. Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, 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 chip could possibly write to the local memory per second - measured in millions of pixels per second. The figure 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 outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.
Display Prices
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.
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