Compare any two graphics cards:
GeForce 8600 GT 256MB GDDR3 vs GeForce GT 430 1GB
IntroThe GeForce 8600 GT 256MB GDDR3 uses a 80 nm design. nVidia has clocked the core speed at 540 MHz. The GDDR3 memory is set to run at a frequency of 700 MHz on this specific model. It features 32 SPUs as well as 16 TAUs and 8 Rasterization Operator Units.
Compare all of that to the GeForce GT 430 1GB, which uses a 40 nm design. nVidia has set the core frequency at 700 MHz. The GDDR3 RAM runs at a speed of 900 MHz on this particular card. It features 96 SPUs as well as 16 Texture Address Units and 4 ROPs.
(No game benchmarks for this combination yet.)
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
The GeForce GT 430 1GB, in theory, should perform much faster than the GeForce 8600 GT 256MB GDDR3 in general. (explain)
Texel RateThe GeForce GT 430 1GB should be quite a bit (more or less 30%) more effective at anisotropic filtering than the GeForce 8600 GT 256MB GDDR3. (explain)
Pixel RateThe GeForce 8600 GT 256MB GDDR3 will be a lot (approximately 54%) more effective at full screen anti-aliasing than the GeForce GT 430 1GB, and 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 max amount of information (in units of MB per second) that can be moved across the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.
Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This is worked out by multiplying the total amount of texture units of the card 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 processed in one second.
Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units 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 output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.