Compare any two graphics cards:
GeForce 9500 GT 512MB GDDR3 vs Radeon HD 3470 512MB
IntroThe GeForce 9500 GT 512MB GDDR3 comes with clock speeds of 550 MHz on the GPU, and 800 MHz on the 512 MB of GDDR3 RAM. It features 32 SPUs along with 16 TAUs and 8 ROPs.
Compare those specifications to the Radeon HD 3470 512MB, which comes with a GPU core clock speed of 800 MHz, and 512 MB of GDDR3 RAM running at 950 MHz through a 128-bit bus. It also features 40(8x5) SPUs, 4 Texture Address Units, and 4 ROPs.
Power Usage and Theoretical Benchmarks
Theoretically speaking, the Radeon HD 3470 512MB should be just a bit faster than the GeForce 9500 GT 512MB GDDR3 in general. (explain)
Texel RateThe GeForce 9500 GT 512MB GDDR3 is a lot (approximately 175%) faster with regards to anisotropic filtering than the Radeon HD 3470 512MB. (explain)
Pixel RateThe GeForce 9500 GT 512MB GDDR3 should be much (about 38%) more effective at anti-aliasing than the Radeon HD 3470 512MB, and capable of handling higher resolutions more effectively. (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 past the external memory interface within a second. It's calculated by multiplying the bus width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better 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 amount of texture map elements (texels) that are processed per second. This is calculated by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.
Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.