Compare any two graphics cards:
GeForce 9500 GT DDR2 vs GeForce GT 220 GDDR3
IntroThe GeForce 9500 GT DDR2 makes use of a 65 nm design. nVidia has clocked the core speed at 550 MHz. The DDR2 RAM runs at a frequency of 500 MHz on this specific model. It features 32 SPUs as well as 16 Texture Address Units and 8 Rasterization Operator Units.
Compare all of that to the GeForce GT 220 GDDR3, which features GPU core speed of 625 MHz, and 512 MB of GDDR3 memory set to run at 1012 MHz through a 128-bit bus. It also is comprised of 48 SPUs, 16 Texture Address Units, and 8 Raster Operation Units.
(No game benchmarks for this combination yet.)
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
Theoretically, the GeForce GT 220 GDDR3 should be quite a bit faster than the GeForce 9500 GT DDR2 in general. (explain)
Texel RateThe GeForce GT 220 GDDR3 will be a little bit (more or less 14%) faster with regards to texture filtering than the GeForce 9500 GT DDR2. (explain)
Pixel RateThe GeForce GT 220 GDDR3 is just a bit (about 14%) more effective at FSAA than the GeForce 9500 GT DDR2, and will be capable of handling higher screen resolutions without losing too much performance. (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 largest amount of data (measured in MB per second) that can be moved across the external memory interface in one second. It's calculated by multiplying the interface width by the speed of its memory. If the card has DDR type memory, it should 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 high resolutions.
Texel Rate: Texel rate is the maximum number of 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 speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.
Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.