Compare any two graphics cards:
GeForce GTX 295 vs Radeon HD 4790
IntroThe GeForce GTX 295 comes with a clock frequency of 576 MHz and a GDDR3 memory speed of 999 MHz. It also features a 448-bit bus, and makes use of a 55 nm design. It is comprised of 240 SPUs, 80 Texture Address Units, and 28 ROPs.Compare all of that to the Radeon HD 4790, which makes use of a 55 nm design. AMD has clocked the core frequency at 600 MHz. The GDDR5 memory runs at a speed of 800 MHz on this specific model. It features 640(128x5) SPUs as well as 32 TAUs and 16 ROPs.
Display Graphs
Power Usage and Theoretical BenchmarksMemory BandwidthIn theory, the GeForce GTX 295 will be 119% faster than the Radeon HD 4790 overall, due to its greater data rate. (explain)
Texel RateThe GeForce GTX 295 is quite a bit (approximately 380%) better at texture filtering than the Radeon HD 4790. (explain)
Pixel RateThe GeForce GTX 295 is much (about 236%) better at FSAA than the Radeon HD 4790, and capable of handling higher screen resolutions better. (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: Memory bandwidth is the max amount of data (counted in MB per second) that can be moved across the external memory interface in one second. It's calculated by multiplying the bus width by its memory speed. In the case of DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, 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 texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second. Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to 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!