GeForce GT 320 vs GeForce GTX 590

Intro

Compare all of that to the GeForce GTX 590, which has a GPU core clock speed of 607 MHz, and 1536 MB of GDDR5 memory set to run at 855 MHz through a 384-bit bus. It also is made up of 512 Stream Processors, 64 TAUs, and 48 ROPs.

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

The GeForce GTX 590, in theory, should be much faster than the GeForce GT 320 overall. (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 (more or less 500%) faster with regards to AF than the GeForce GT 320. (explain)

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

Pixel Rate

The GeForce GTX 590 should be a lot (more or less 1249%) faster with regards to full screen anti-aliasing than the GeForce GT 320, and should be capable of handling higher screen resolutions without losing too much performance. (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 (in units of megabytes per second) that can be moved past the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better 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 texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.