Compare any two graphics cards:
GeForce 9800 GT 1GB vs GeForce GT 440 1.5GB
IntroThe GeForce 9800 GT 1GB comes with a core clock frequency of 600 MHz and a GDDR3 memory frequency of 900 MHz. It also makes use of a 256-bit bus, and uses a 65/55 nm design. It is made up of 112 SPUs, 56 TAUs, and 16 Raster Operation Units.
Compare those specifications to the GeForce GT 440 1.5GB, which features a GPU core clock speed of 594 MHz, and 1536 MB of GDDR3 memory running at 900 MHz through a 192-bit bus. It also is comprised of 144 SPUs, 24 TAUs, and 24 Raster Operation Units.
(No game benchmarks for this combination yet.)
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
Theoretically, the GeForce 9800 GT 1GB should perform much faster than the GeForce GT 440 1.5GB in general. (explain)
Texel RateThe GeForce 9800 GT 1GB should be quite a bit (approximately 136%) faster with regards to AF than the GeForce GT 440 1.5GB. (explain)
Pixel RateIf using lots of anti-aliasing is important to you, then the GeForce GT 440 1.5GB 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.
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 information (measured in megabytes per second) that can be transferred past the external memory interface in one second. It is calculated by multiplying the interface width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.
Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the core 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 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 ability to get to the max fill rate.