Compare any two graphics cards:
GeForce 9500 GT 512MB GDDR3 vs Radeon HD 5450
IntroThe GeForce 9500 GT 512MB GDDR3 comes with a GPU clock speed of 550 MHz, and the 512 MB of GDDR3 memory runs at 800 MHz through a 128-bit bus. It also is comprised of 32 Stream Processors, 16 Texture Address Units, and 8 ROPs.
Compare that to the Radeon HD 5450, which comes with a core clock speed of 650 MHz and a DDR3 memory speed of 800 MHz. It also makes use of 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 GeForce 9500 GT 512MB GDDR3 should perform quite a bit faster than the Radeon HD 5450 overall. (explain)
Texel RateThe GeForce 9500 GT 512MB GDDR3 will be much (about 69%) better at texture filtering than the Radeon HD 5450. (explain)
Pixel RateThe GeForce 9500 GT 512MB GDDR3 should be much (about 69%) faster with regards to anti-aliasing than the Radeon HD 5450, and also will be able to handle higher resolutions without losing too much performance. (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.
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.
Memory Bandwidth: Memory bandwidth is the largest amount of data (measured in megabytes per second) that can be moved past the external memory interface within a second. It's calculated by multiplying the card's bus width by its memory speed. If it uses DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.
Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.
Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount 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 output rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.