GeForce GT 320 vs GeForce GTX 260

Intro

Compare those specs to the GeForce GTX 260, which features a clock speed of 576 MHz and a GDDR3 memory frequency of 999 MHz. It also uses a 448-bit bus, and makes use of a 65 nm design. It is comprised of 192 SPUs, 64 TAUs, and 28 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
GeForce GTX 260		182 Watts
	Difference: 139 Watts (323%)

Memory Bandwidth

In theory, the GeForce GTX 260 should be 343% quicker than the GeForce GT 320 in general, because of its higher bandwidth. (explain)

GeForce GTX 260		111888 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 86608 (343%)

Texel Rate

The GeForce GTX 260 is much (more or less 184%) more effective at AF than the GeForce GT 320. (explain)

GeForce GTX 260		36864 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 23904 (184%)

Pixel Rate

The GeForce GTX 260 is quite a bit (about 273%) better at full screen anti-aliasing than the GeForce GT 320, and should be able to handle higher screen resolutions more effectively. (explain)

GeForce GTX 260		16128 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 11808 (273%)

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: Bandwidth is the largest amount of data (counted in megabytes per second) that can be transferred over the external memory interface in one second. It is calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster 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 texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs 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 fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.