GeForce GT 240 GDDR5 vs GeForce GT 440 3GB

Intro

Compare those specs to the GeForce GT 440 3GB, which features a GPU core clock speed of 594 MHz, and 3072 MB of GDDR3 memory set to run at 900 MHz through a 192-bit bus. It also features 144 SPUs, 24 TAUs, and 24 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 3GB		56 Watts
GeForce GT 240 GDDR5		70 Watts
	Difference: 14 Watts (25%)

Memory Bandwidth

Theoretically speaking, the GeForce GT 240 GDDR5 should be 26% quicker than the GeForce GT 440 3GB overall, due to its greater bandwidth. (explain)

GeForce GT 240 GDDR5		54400 MB/sec
GeForce GT 440 3GB		43200 MB/sec
	Difference: 11200 (26%)

Texel Rate

The GeForce GT 240 GDDR5 is quite a bit (more or less 23%) faster with regards to AF than the GeForce GT 440 3GB. (explain)

GeForce GT 240 GDDR5		17600 Mtexels/sec
GeForce GT 440 3GB		14256 Mtexels/sec
	Difference: 3344 (23%)

Pixel Rate

The GeForce GT 440 3GB is a lot (about 224%) faster with regards to FSAA than the GeForce GT 240 GDDR5, and will be able to handle higher screen resolutions better. (explain)

GeForce GT 440 3GB		14256 Mpixels/sec
GeForce GT 240 GDDR5		4400 Mpixels/sec
	Difference: 9856 (224%)

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.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the maximum amount of information (measured in megabytes per second) that can be moved past the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one 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 video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. 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 maximum fill rate.