GeForce GT 240 GDDR5 vs GeForce GTX 590

Intro

Compare that to the GeForce GTX 590, which comes with core clock 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 240 GDDR5		70 Watts
GeForce GTX 590		365 Watts
	Difference: 295 Watts (421%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 590 should in theory be quite a bit superior to the GeForce GT 240 GDDR5 overall. (explain)

GeForce GTX 590		328320 MB/sec
GeForce GT 240 GDDR5		54400 MB/sec
	Difference: 273920 (504%)

Texel Rate

The GeForce GTX 590 should be quite a bit (about 341%) better at AF than the GeForce GT 240 GDDR5. (explain)

GeForce GTX 590		77696 Mtexels/sec
GeForce GT 240 GDDR5		17600 Mtexels/sec
	Difference: 60096 (341%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 590 is superior to the GeForce GT 240 GDDR5, by far. (explain)

GeForce GTX 590		58272 Mpixels/sec
GeForce GT 240 GDDR5		4400 Mpixels/sec
	Difference: 53872 (1224%)

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 max amount of data (in units of MB per second) that can be transported across the external memory interface in a second. It's worked out by multiplying the interface width by its memory clock speed. If the card has DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 amount of texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.