GeForce GT 220 GDDR3 vs GeForce GTX 260

Intro

Compare all of that to the GeForce GTX 260, which comes with a core clock speed of 576 MHz and a GDDR3 memory speed of 999 MHz. It also uses a 448-bit bus, and uses a 65 nm design. It features 192 SPUs, 64 Texture Address Units, and 28 Raster Operation Units.

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

In theory, the GeForce GTX 260 should be 246% faster than the GeForce GT 220 GDDR3 overall, because of its higher bandwidth. (explain)

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

Texel Rate

The GeForce GTX 260 is quite a bit (about 269%) better at 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

If using a high resolution is important to you, then the GeForce GTX 260 is a better choice, by far. (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 (in units of MB per second) that can be transferred over the external memory interface in a second. The number is worked out by multiplying the bus width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better 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 amount of texture map elements (texels) that are applied in one second. This is calculated by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.