Compare any two graphics cards:
GeForce 8300 GS (OEM) vs GeForce 8600 GT 512MB DDR2
IntroThe GeForce 8300 GS (OEM) has a GPU core speed of 450 MHz, and the 128 MB of DDR2 RAM runs at 400 MHz through a 64-bit bus. It also is made up of 8 Stream Processors, 4 TAUs, and 2 ROPs.
Compare all of that to the GeForce 8600 GT 512MB DDR2, which uses a 80 nm design. nVidia has set the core speed at 540 MHz. The DDR2 memory runs at a speed of 400 MHz on this particular card. It features 32 SPUs along with 16 TAUs and 8 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
Performance-wise, the GeForce 8600 GT 512MB DDR2 should in theory be quite a bit better than the GeForce 8300 GS (OEM) in general. (explain)
Texel RateThe GeForce 8600 GT 512MB DDR2 is quite a bit (about 380%) faster with regards to anisotropic filtering than the GeForce 8300 GS (OEM). (explain)
Pixel RateThe GeForce 8600 GT 512MB DDR2 is much (about 380%) more effective at anti-aliasing than the GeForce 8300 GS (OEM), and will be able to handle higher resolutions better. (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 maximum amount of data (measured in MB per second) that can be moved past the external memory interface within a second. It is worked out by multiplying the interface width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.
Pixel Rate: Pixel rate is the most pixels 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 Render Output Units by the the card's clock speed. 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 output 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 max fill rate.