GeForce 9800 GT 512MB vs GeForce GTX 560 Ti

Intro

Compare those specs to the GeForce GTX 560 Ti, which has GPU core speed of 822 MHz, and 1024 MB of GDDR5 RAM running at 1002 MHz through a 256-bit bus. It also is made up of 384 SPUs, 64 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9800 GT 512MB		105 Watts
GeForce GTX 560 Ti		170 Watts
	Difference: 65 Watts (62%)

Memory Bandwidth

Performance-wise, the GeForce GTX 560 Ti should in theory be much better than the GeForce 9800 GT 512MB in general. (explain)

GeForce GTX 560 Ti		128256 MB/sec
GeForce 9800 GT 512MB		57600 MB/sec
	Difference: 70656 (123%)

Texel Rate

The GeForce GTX 560 Ti is quite a bit (more or less 57%) faster with regards to anisotropic filtering than the GeForce 9800 GT 512MB. (explain)

GeForce GTX 560 Ti		52608 Mtexels/sec
GeForce 9800 GT 512MB		33600 Mtexels/sec
	Difference: 19008 (57%)

Pixel Rate

The GeForce GTX 560 Ti is a lot (about 174%) better at full screen anti-aliasing than the GeForce 9800 GT 512MB, and also should be capable of handling higher resolutions more effectively. (explain)

GeForce GTX 560 Ti		26304 Mpixels/sec
GeForce 9800 GT 512MB		9600 Mpixels/sec
	Difference: 16704 (174%)

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 Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the max amount of information (in units of MB per second) that can be transferred over the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory speed. If the card has DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total texture units by the core speed of the chip. The higher this number, the better the graphics 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 that the graphics chip can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.