Compare any two graphics cards:
GeForce 9600 GSO 1.5GB vs GeForce GT 230
IntroThe GeForce 9600 GSO 1.5GB features a clock frequency of 550 MHz and a GDDR3 memory frequency of 800 MHz. It also features a 192-bit bus, and uses a 65 nm design. It is comprised of 96 SPUs, 48 TAUs, and 12 ROPs.
Compare all of that to the GeForce GT 230, which has clock speeds of 550 MHz on the GPU, and 800 MHz on the 1536 MB of DDR3 memory. It features 32 SPUs as well as 16 Texture Address Units and 8 Rasterization Operator Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
Both cards have exactly the same memory bandwidth, so theoretically they should perform the same. (explain)
Texel RateThe GeForce 9600 GSO 1.5GB should be quite a bit (about 200%) faster with regards to texture filtering than the GeForce GT 230. (explain)
Pixel RateIf running with a high resolution is important to you, then the GeForce 9600 GSO 1.5GB is superior to the GeForce GT 230, 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.
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 (counted 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 clock speed. If it uses DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total 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 handling 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 its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.