GeForce GT 240 GDDR5 vs GeForce GTX 590

Intro

Compare those specifications 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 Texture Address Units 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

In theory, the GeForce GTX 590 should perform much faster than the GeForce GT 240 GDDR5 in general. (explain)

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

Texel Rate

The GeForce GTX 590 will be a lot (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 running with high levels of AA is important to you, then the GeForce GTX 590 is a better choice, by a large margin. (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: Memory bandwidth is the largest amount of data (counted in megabytes per second) that can be transferred over the external memory interface in a second. The number is worked out by multiplying the interface width by its memory speed. If it uses DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one 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 card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

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