GeForce GT 320 vs GeForce GTX 590

Intro

Compare those specs to the GeForce GTX 590, which comes with core speeds of 607 MHz on the GPU, and 855 MHz on the 1536 MB of GDDR5 RAM. It features 512 SPUs along with 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

In theory, the GeForce GTX 590 is 1199% quicker than the GeForce GT 320 overall, because of its greater data rate. (explain)

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

Texel Rate

The GeForce GTX 590 will be a lot (more or less 500%) better at 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 quite a bit (about 1249%) more effective at AA than the GeForce GT 320, and able to handle higher screen resolutions better. (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: Memory bandwidth is the maximum amount of data (measured in MB per second) that can be moved across the external memory interface in one second. It is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.