GeForce GT 320 vs GeForce GTX 570

Intro

Compare those specifications to the GeForce GTX 570, which has core speeds of 732 MHz on the GPU, and 950 MHz on the 1280 MB of GDDR5 RAM. It features 480 SPUs as well as 60 TAUs and 40 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
GeForce GTX 570		219 Watts
	Difference: 176 Watts (409%)

Memory Bandwidth

In theory, the GeForce GTX 570 is 501% quicker than the GeForce GT 320 in general, due to its greater bandwidth. (explain)

GeForce GTX 570		152000 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 126720 (501%)

Texel Rate

The GeForce GTX 570 is much (about 239%) better at AF than the GeForce GT 320. (explain)

GeForce GTX 570		43920 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 30960 (239%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 570 is a better choice, by far. (explain)

GeForce GTX 570		29280 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 24960 (578%)

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 (counted in megabytes per second) that can be transferred across the external memory interface within a second. It's worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better 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 number of texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.