GeForce GT 220 GDDR3 vs GeForce GT 240 GDDR5

Intro

Compare that to the GeForce GT 240 GDDR5, which comes with core speeds of 550 MHz on the GPU, and 850 MHz on the 512 MB of GDDR5 RAM. It features 96 SPUs along with 32 TAUs and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 220 GDDR3		58 Watts
GeForce GT 240 GDDR5		70 Watts
	Difference: 12 Watts (21%)

Memory Bandwidth

In theory, the GeForce GT 240 GDDR5 will be 68% faster than the GeForce GT 220 GDDR3 in general, because of its higher bandwidth. (explain)

GeForce GT 240 GDDR5		54400 MB/sec
GeForce GT 220 GDDR3		32384 MB/sec
	Difference: 22016 (68%)

Texel Rate

The GeForce GT 240 GDDR5 is quite a bit (about 76%) better at anisotropic filtering than the GeForce GT 220 GDDR3. (explain)

GeForce GT 240 GDDR5		17600 Mtexels/sec
GeForce GT 220 GDDR3		10000 Mtexels/sec
	Difference: 7600 (76%)

Pixel Rate

The GeForce GT 220 GDDR3 should be just a bit (more or less 14%) more effective at full screen anti-aliasing than the GeForce GT 240 GDDR5, and will be able to handle higher resolutions without slowing down too much. (explain)

GeForce GT 220 GDDR3		5000 Mpixels/sec
GeForce GT 240 GDDR5		4400 Mpixels/sec
	Difference: 600 (14%)

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 data (in units of megabytes per second) that can be transported over the external memory interface in one second. It is worked out by multiplying the bus width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total number of texture units of the card by the core clock 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 applied in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.