Compare any two graphics cards:
GeForce 8500 GT vs Radeon HD 5550
IntroThe GeForce 8500 GT uses a 80 nm design. nVidia has clocked the core speed at 450 MHz. The DDR2 RAM runs at a frequency of 400 MHz on this specific card. It features 16 SPUs as well as 8 TAUs and 4 ROPs.Compare all that to the Radeon HD 5550, which has a clock speed of 550 MHz and a DDR2 memory frequency of 400 MHz. It also uses a 128-bit memory bus, and makes use of a 40 nm design. It features 320(64x5) SPUs, 16 TAUs, and 8 ROPs.
Display Graphs
Power Usage and Theoretical BenchmarksMemory BandwidthBoth cards have the exact same bandwidth, so in theory they should perform the same. (explain)
Texel RateThe Radeon HD 5550 will be a lot (about 144%) better at AF than the GeForce 8500 GT. (explain)
Pixel RateIf using a high screen resolution is important to you, then the Radeon HD 5550 is the winner, 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. 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 maximum amount of information (counted in MB per second) that can be transferred over 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 the card has DDR memory, the result should be multiplied by 2 once 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, High Dynamic Range and high resolutions. Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second. Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability 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!