GeForce GT 440 3GB vs GeForce GTX 590

Intro

Compare those specifications to the GeForce GTX 590, which has a core clock speed of 607 MHz and a GDDR5 memory speed of 855 MHz. It also uses a 384-bit memory bus, and uses a 40 nm design. It is made up of 512 SPUs, 64 Texture Address Units, and 48 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 3GB		56 Watts
GeForce GTX 590		365 Watts
	Difference: 309 Watts (552%)

Memory Bandwidth

The GeForce GTX 590 should in theory be much faster than the GeForce GT 440 3GB in general. (explain)

GeForce GTX 590		328320 MB/sec
GeForce GT 440 3GB		43200 MB/sec
	Difference: 285120 (660%)

Texel Rate

The GeForce GTX 590 will be quite a bit (about 445%) faster with regards to AF than the GeForce GT 440 3GB. (explain)

GeForce GTX 590		77696 Mtexels/sec
GeForce GT 440 3GB		14256 Mtexels/sec
	Difference: 63440 (445%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 590 is a better choice, by far. (explain)

GeForce GTX 590		58272 Mpixels/sec
GeForce GT 440 3GB		14256 Mpixels/sec
	Difference: 44016 (309%)

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 (counted in MB per second) that can be transferred over the external memory interface in a second. It's calculated by multiplying the interface width by its memory speed. If the card has DDR memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better 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 figure is calculated by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of 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.