Compare any two graphics cards:
GeForce GT 240 GDDR5 vs GeForce GT 430
IntroThe GeForce GT 240 GDDR5 uses a 40 nm design. nVidia has clocked the core frequency at 550 MHz. The GDDR5 RAM works at a speed of 850 MHz on this specific model. It features 96 SPUs as well as 32 Texture Address Units and 8 ROPs.
Compare all that to the GeForce GT 430, which uses a 40 nm design. nVidia has set the core speed at 700 MHz. The GDDR3 memory is set to run at a speed of 900 MHz on this 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)
Theoretically, the GeForce GT 240 GDDR5 should perform quite a bit faster than the GeForce GT 430 in general. (explain)
Texel RateThe GeForce GT 240 GDDR5 will be much (approximately 57%) more effective at anisotropic filtering than the GeForce GT 430. (explain)
Pixel RateThe GeForce GT 240 GDDR5 is a lot (more or less 57%) more effective at anti-aliasing than the GeForce GT 430, and will be able to handle 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.
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 (in units of megabytes per second) that can be transferred across the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total number of texture units by the core clock 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 applied in one second.
Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.