GeForce GT 220 GDDR3 vs GeForce GTX 470

Intro

Compare that to the GeForce GTX 470, which uses a 40 nm design. nVidia has set the core speed at 607 MHz. The GDDR5 RAM runs at a speed of 837 MHz on this specific model. It features 448 SPUs as well as 56 TAUs and 40 ROPs.

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

Theoretically speaking, the GeForce GTX 470 should be quite a bit faster than the GeForce GT 220 GDDR3 overall. (explain)

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

Texel Rate

The GeForce GTX 470 will be quite a bit (more or less 240%) more effective at anisotropic filtering 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

The GeForce GTX 470 will be a lot (approximately 386%) better at FSAA than the GeForce GT 220 GDDR3, and also able to handle higher resolutions better. (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: Memory bandwidth is the largest amount of information (measured in megabytes per second) that can be moved across the external memory interface in a second. It's calculated by multiplying the bus width by its memory speed. If the card has DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This figure is calculated 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel 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 max fill rate.