Compare any two graphics cards:
GeForce 9800 GTX+ vs GeForce GTS 450 1GB
IntroThe GeForce 9800 GTX+ makes use of a 55 nm design. nVidia has set the core frequency at 738 MHz. The GDDR3 RAM works at a frequency of 1100 MHz on this specific card. It features 128 SPUs along with 64 TAUs and 16 ROPs.
Compare those specs to the GeForce GTS 450 1GB, which comes with a clock frequency of 783 MHz and a GDDR5 memory speed of 902 MHz. It also uses a 128-bit bus, and makes use of a 40 nm design. It is made up of 192 SPUs, 32 Texture Address Units, and 16 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
The GeForce 9800 GTX+, in theory, should be a lot faster than the GeForce GTS 450 1GB in general. (explain)
Texel RateThe GeForce 9800 GTX+ will be much (more or less 89%) better at anisotropic filtering than the GeForce GTS 450 1GB. (explain)
Pixel RateThe GeForce GTS 450 1GB will be just a bit (approximately 6%) faster with regards to full screen anti-aliasing than the GeForce 9800 GTX+, and also will be able to handle higher screen 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: Bandwidth is the max amount of information (measured in MB per second) that can be transported across the external memory interface in a second. It is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, 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 number of texture map elements (texels) that are applied 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 higher the texel rate, the better the video 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 maximum amount of pixels the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core clock speed. 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 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.