GeForce GT 320 vs GeForce GTX 570

Intro

Compare those specs to the GeForce GTX 570, which comes with GPU core speed of 732 MHz, and 1280 MB of GDDR5 RAM set to run at 950 MHz through a 320-bit bus. It also is comprised of 480 SPUs, 60 Texture Address Units, and 40 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 570		219 Watts
	Difference: 176 Watts (409%)

Memory Bandwidth

In theory, the GeForce GTX 570 should be a lot faster than the GeForce GT 320 overall. (explain)

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

Texel Rate

The GeForce GTX 570 should be much (more or less 239%) faster with regards to anisotropic filtering than the GeForce GT 320. (explain)

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

Pixel Rate

The GeForce GTX 570 should be a lot (about 578%) better at FSAA than the GeForce GT 320, and will be able to handle higher screen resolutions without losing too much performance. (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: Bandwidth is the max amount of information (in units of MB per second) that can be transferred across the external memory interface in one second. It's calculated by multiplying the bus width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This figure is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the video 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 the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.