GeForce GT 320 vs GeForce GTX 590

Intro

Compare those specifications to the GeForce GTX 590, which has a clock speed of 607 MHz and a GDDR5 memory speed of 855 MHz. It also makes use of a 384-bit bus, and uses a 40 nm design. It is comprised of 512 SPUs, 64 TAUs, and 48 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 590		365 Watts
	Difference: 322 Watts (749%)

Memory Bandwidth

In theory, the GeForce GTX 590 should be 1199% quicker than the GeForce GT 320 in general, because of its higher data rate. (explain)

GeForce GTX 590		328320 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 303040 (1199%)

Texel Rate

The GeForce GTX 590 is quite a bit (approximately 500%) better at anisotropic filtering than the GeForce GT 320. (explain)

GeForce GTX 590		77696 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 64736 (500%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 590 is superior to the GeForce GT 320, and very much so. (explain)

GeForce GTX 590		58272 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 53952 (1249%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the maximum amount of data (measured in megabytes per second) that can be moved across the external memory interface in one second. The number is calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs 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 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 reach the maximum fill rate.