Compare any two graphics cards:
GeForce GTX 465 vs Radeon HD 3870 X2 1GB
IntroThe GeForce GTX 465 makes use of a 40 nm design. nVidia has set the core frequency at 607 MHz. The GDDR5 memory runs at a speed of 802 MHz on this specific model. It features 352 SPUs as well as 44 Texture Address Units and 32 Rasterization Operator Units.Compare all that to the Radeon HD 3870 X2 1GB, which comes with a core clock frequency of 825 MHz and a GDDR4 memory speed of 1126 MHz. It also uses a 256-bit bus, and uses a 55 nm design. It features 320(64x5) SPUs, 16 TAUs, and 16 ROPs.
Display Graphs
Power Usage and Theoretical BenchmarksMemory BandwidthPerformance-wise, the Radeon HD 3870 X2 1GB should theoretically be quite a bit better than the GeForce GTX 465 overall. (explain)
Texel RateThe GeForce GTX 465 should be a small bit (approximately 1%) better at texture filtering than the Radeon HD 3870 X2 1GB. (explain)
Pixel RateIf using lots of anti-aliasing is important to you, then the Radeon HD 3870 X2 1GB is superior to the GeForce GTX 465, and very much so. (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 max amount of information (in units of MB per second) that can be moved across the external memory interface within a second. The number is calculated by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster 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 number of texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total number of texture units by the core speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second. Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka 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 potential to get to the maximum 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!