GeForce GT 320 vs GeForce GTX 660 Ti

Intro

Compare all that to the GeForce GTX 660 Ti, which has core clock speeds of 915 MHz on the GPU, and 1500 MHz on the 2048 MB of GDDR5 memory. It features 1344 SPUs along with 112 TAUs and 24 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
GeForce GTX 660 Ti		150 Watts
	Difference: 107 Watts (249%)

Memory Bandwidth

In theory, the GeForce GTX 660 Ti is 470% quicker than the GeForce GT 320 overall, because of its greater data rate. (explain)

GeForce GTX 660 Ti		144000 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 118720 (470%)

Texel Rate

The GeForce GTX 660 Ti will be a lot (about 691%) more effective at anisotropic filtering than the GeForce GT 320. (explain)

GeForce GTX 660 Ti		102480 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 89520 (691%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 660 Ti is the winner, by a large margin. (explain)

GeForce GTX 660 Ti		21960 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 17640 (408%)

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 maximum amount of information (counted in megabytes per second) that can be transported across the external memory interface in one second. It is worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out 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 filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.