GeForce GT 220 GDDR3 vs GeForce GTX 660 Ti

Intro

Compare that to the GeForce GTX 660 Ti, which uses a 28 nm design. nVidia has set the core frequency at 915 MHz. The GDDR5 memory is set to run at a speed of 1500 MHz on this specific card. It features 1344 SPUs as well as 112 TAUs and 24 Rasterization Operator Units.

Display Graphs

Hide Graphs

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

As far as performance goes, the GeForce GTX 660 Ti should in theory be quite a bit superior to the GeForce GT 220 GDDR3 overall. (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 should be much (approximately 925%) better at anisotropic filtering 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

The GeForce GTX 660 Ti should be a lot (about 339%) better at FSAA than the GeForce GT 220 GDDR3, and will be able to handle higher resolutions better. (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 largest amount of data (counted in MB per second) that can be transported past the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster 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 in one second. This is worked out by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the graphics 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 maximum amount of pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.