GeForce GT 220 GDDR3 vs GeForce GTX 470

Intro

Compare those specifications to the GeForce GTX 470, which features a GPU core clock speed of 607 MHz, and 1280 MB of GDDR5 memory running at 837 MHz through a 320-bit bus. It also is made up of 448 SPUs, 56 TAUs, and 40 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 470		215 Watts
	Difference: 157 Watts (271%)

Memory Bandwidth

In theory, the GeForce GTX 470 should be much faster than the GeForce GT 220 GDDR3 in general. (explain)

GeForce GTX 470		133920 MB/sec
GeForce GT 220 GDDR3		32384 MB/sec
	Difference: 101536 (314%)

Texel Rate

The GeForce GTX 470 is a lot (about 240%) better at AF than the GeForce GT 220 GDDR3. (explain)

GeForce GTX 470		33992 Mtexels/sec
GeForce GT 220 GDDR3		10000 Mtexels/sec
	Difference: 23992 (240%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 470 is the winner, and very much so. (explain)

GeForce GTX 470		24280 Mpixels/sec
GeForce GT 220 GDDR3		5000 Mpixels/sec
	Difference: 19280 (386%)

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 maximum amount of data (measured in MB per second) that can be transferred over the external memory interface in one second. It's calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at 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 card can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called 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, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.