Compare any two graphics cards:
Radeon HD 4350 vs Radeon HD 5450
IntroThe Radeon HD 4350 has a clock frequency of 575 MHz and a DDR2 memory frequency of 500 MHz. It also features a 64-bit bus, and uses a 55 nm design. It features 80(16x5) SPUs, 8 TAUs, and 4 ROPs.
Compare that to the Radeon HD 5450, which has a clock frequency of 650 MHz and a DDR3 memory speed of 800 MHz. It also uses a 64-bit memory bus, and uses a 40 nm design. It features 80(16x5) SPUs, 8 Texture Address Units, and 4 ROPs.
(No game benchmarks for this combination yet.)
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
In theory, the Radeon HD 5450 should be 60% faster than the Radeon HD 4350 in general, because of its greater bandwidth. (explain)
Texel RateThe Radeon HD 5450 should be just a bit (about 13%) faster with regards to texture filtering than the Radeon HD 4350. (explain)
Pixel RateIf running with lots of anti-aliasing is important to you, then the Radeon HD 5450 is superior to the Radeon HD 4350, not by a very large margin though. (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 ComparisonPlease note that the price comparisons are based on search keywords, and might not be the exact same card listed on this page. We have no control over the accuracy of their search results.
Memory Bandwidth: Memory bandwidth is the maximum amount of data (measured in megabytes per second) that can be moved across the external memory interface within a second. The number is worked out by multiplying the bus width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the 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 video card could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the clock speed of the card. 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 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.