GeForce GT 220 GDDR3 vs GeForce GTX 260

Intro

Compare all that to the GeForce GTX 260, which uses a 65 nm design. nVidia has clocked the core frequency at 576 MHz. The GDDR3 memory is set to run at a frequency of 999 MHz on this particular model. It features 192 SPUs along with 64 TAUs 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

The GeForce GTX 260 should theoretically perform quite a bit faster than the GeForce GT 220 GDDR3 overall. (explain)

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

Texel Rate

The GeForce GTX 260 should be much (more or less 269%) faster with regards to anisotropic 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

The GeForce GTX 260 should be much (approximately 223%) faster with regards to FSAA than the GeForce GT 220 GDDR3, and capable of handling higher resolutions without slowing down too much. (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: Memory bandwidth is the max amount of information (counted in megabytes per second) that can be transferred across the external memory interface in a second. It is calculated by multiplying the bus width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. 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 number of texture map elements (texels) that are processed 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 this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

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