GeForce GT 220 GDDR3 vs GeForce GTX 470

Intro

Compare all that to the GeForce GTX 470, which uses a 40 nm design. nVidia has clocked the core frequency at 607 MHz. The GDDR5 RAM works at a speed of 837 MHz on this card. It features 448 SPUs along with 56 TAUs and 40 Rasterization Operator Units.

Display Graphs

Hide Graphs

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

Performance-wise, the GeForce GTX 470 should in theory be much better 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 will be quite a bit (about 240%) more effective at texture 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

If using a high screen resolution is important to you, then the GeForce GTX 470 is superior to the GeForce GT 220 GDDR3, by far. (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 maximum amount of data (measured in MB per second) that can be transported past the external memory interface in a second. It's worked out by multiplying the bus width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 once again. If it uses 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 higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.