Compare any two graphics cards:
GeForce 9500 GT DDR2 vs GeForce GT 220 GDDR3
IntroThe GeForce 9500 GT DDR2 has a clock speed of 550 MHz and a DDR2 memory frequency of 500 MHz. It also makes use of a 128-bit bus, and makes use of a 65 nm design. It features 32 SPUs, 16 Texture Address Units, and 8 ROPs.
Compare those specifications to the GeForce GT 220 GDDR3, which has a clock frequency of 625 MHz and a GDDR3 memory speed of 1012 MHz. It also uses a 128-bit memory bus, and makes use of a 40 nm design. It features 48 SPUs, 16 TAUs, and 8 ROPs.
(No game benchmarks for this combination yet.)
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
In theory, the GeForce GT 220 GDDR3 should perform a lot faster than the GeForce 9500 GT DDR2 overall. (explain)
Texel RateThe GeForce GT 220 GDDR3 will be a little bit (about 14%) faster with regards to anisotropic filtering than the GeForce 9500 GT DDR2. (explain)
Pixel RateThe GeForce GT 220 GDDR3 will be a small bit (approximately 14%) more effective at AA than the GeForce 9500 GT DDR2, and will be able to handle higher screen resolutions without slowing down too much. (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 max amount of information (measured in MB per second) that can be transported past the external memory interface in one second. It is calculated by multiplying the interface width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the graphics 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 most pixels the graphics card could possibly write to the local memory per 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 - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.