Compare any two graphics cards:
Radeon HD 4550 256MB vs Radeon HD 5550
IntroThe Radeon HD 4550 256MB uses a 55 nm design. AMD has clocked the core speed at 600 MHz. The DDR3 RAM works at a speed of 800 MHz on this particular model. It features 80(16x5) SPUs along with 8 Texture Address Units and 4 ROPs.Compare all that to the Radeon HD 5550, which has a GPU core clock speed of 550 MHz, and 512 MB of DDR2 memory set to run at 400 MHz through a 128-bit bus. It also is comprised of 320(64x5) Stream Processors, 16 Texture Address Units, and 8 ROPs.
Display Graphs
Power Usage and Theoretical BenchmarksMemory BandwidthBoth cards have the exact same bandwidth, so theoretically they should perform exactly the same. (explain)
Texel RateThe Radeon HD 5550 is a lot (about 83%) faster with regards to texture filtering than the Radeon HD 4550 256MB. (explain)
Pixel RateIf running with lots of anti-aliasing is important to you, then the Radeon HD 5550 is superior to the Radeon HD 4550 256MB, by a large margin. (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: Bandwidth is the largest amount of information (counted in MB per second) that can be transferred past the external memory interface within a second. It's worked out by multiplying the bus width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. 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 texture map elements (texels) that are applied per second. This is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second. Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory 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.
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