GeForce GT 220 GDDR3 vs GeForce GTX 660 Ti

Intro

Compare those specs to the GeForce GTX 660 Ti, which features a clock speed of 915 MHz and a GDDR5 memory frequency of 1500 MHz. It also features a 192-bit bus, and uses a 28 nm design. It is made up of 1344 SPUs, 112 Texture Address Units, and 24 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 220 GDDR3		58 Watts
GeForce GTX 660 Ti		150 Watts
	Difference: 92 Watts (159%)

Memory Bandwidth

In theory, the GeForce GTX 660 Ti will be 345% faster than the GeForce GT 220 GDDR3 in general, due to its greater bandwidth. (explain)

GeForce GTX 660 Ti		144000 MB/sec
GeForce GT 220 GDDR3		32384 MB/sec
	Difference: 111616 (345%)

Texel Rate

The GeForce GTX 660 Ti is a lot (approximately 925%) faster with regards to AF than the GeForce GT 220 GDDR3. (explain)

GeForce GTX 660 Ti		102480 Mtexels/sec
GeForce GT 220 GDDR3		10000 Mtexels/sec
	Difference: 92480 (925%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 660 Ti is the winner, and very much so. (explain)

GeForce GTX 660 Ti		21960 Mpixels/sec
GeForce GT 220 GDDR3		5000 Mpixels/sec
	Difference: 16960 (339%)

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 data (in units of megabytes per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the bus width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the clock speed of the card. 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 fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.