Compare any two graphics cards:
GeForce GT 240 GDDR5 1GB vs Radeon HD 3870 X2 1GB
IntroThe GeForce GT 240 GDDR5 1GB comes with a core clock speed of 550 MHz and a GDDR5 memory speed of 850 MHz. It also features a 128-bit memory bus, and makes use of a 40 nm design. It features 96 SPUs, 32 Texture Address Units, and 8 ROPs.Compare that to the Radeon HD 3870 X2 1GB, which has a clock speed of 825 MHz and a GDDR4 memory frequency of 1126 MHz. It also uses a 256-bit bus, and uses a 55 nm design. It is made up of 320(64x5) SPUs, 16 TAUs, and 16 Raster Operation Units.
Display Graphs
Power Usage and Theoretical BenchmarksMemory BandwidthAs far as performance goes, the Radeon HD 3870 X2 1GB should in theory be much superior to the GeForce GT 240 GDDR5 1GB in general. (explain)
Texel RateThe Radeon HD 3870 X2 1GB will be much (approximately 50%) faster with regards to texture filtering than the GeForce GT 240 GDDR5 1GB. (explain)
Pixel RateThe Radeon HD 3870 X2 1GB is much (more or less 500%) faster with regards to anti-aliasing than the GeForce GT 240 GDDR5 1GB, and also able to handle higher 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. One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of. Price Comparison
Display Prices
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. Specifications
Display Specifications
Memory Bandwidth: Bandwidth is the maximum amount of information (in units of megabytes per second) that can be transferred past the external memory interface in one second. It's worked out by multiplying the card's interface width by the speed of its memory. If it uses 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 amount of texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher 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 a second. Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.
Display Prices
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.
|
Comments
Be the first to leave a comment!