GeForce GT 220 GDDR3 vs GeForce GTX 260

Intro

Compare that to the GeForce GTX 260, which features core speeds of 576 MHz on the GPU, and 999 MHz on the 896 MB of GDDR3 memory. It features 192 SPUs along with 64 Texture Address Units and 28 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 220 GDDR3		58 Watts
GeForce GTX 260		182 Watts
	Difference: 124 Watts (214%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 260 should in theory be much better than the GeForce GT 220 GDDR3 in general. (explain)

GeForce GTX 260		111888 MB/sec
GeForce GT 220 GDDR3		32384 MB/sec
	Difference: 79504 (246%)

Texel Rate

The GeForce GTX 260 is a lot (approximately 269%) more effective at texture filtering than the GeForce GT 220 GDDR3. (explain)

GeForce GTX 260		36864 Mtexels/sec
GeForce GT 220 GDDR3		10000 Mtexels/sec
	Difference: 26864 (269%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 260 is the winner, by a large margin. (explain)

GeForce GTX 260		16128 Mpixels/sec
GeForce GT 220 GDDR3		5000 Mpixels/sec
	Difference: 11128 (223%)

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 max amount of information (measured in megabytes per second) that can be transferred over the external memory interface in a second. It is calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.