GeForce 8800 GTS (G92) vs GeForce GT 220 GDDR3

Intro

Compare all that to the GeForce GT 220 GDDR3, which has a core clock speed of 625 MHz and a GDDR3 memory frequency of 1012 MHz. It also features a 128-bit bus, and uses a 40 nm design. It is comprised of 48 SPUs, 16 Texture Address Units, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 220 GDDR3		58 Watts
GeForce 8800 GTS (G92)		135 Watts
	Difference: 77 Watts (133%)

Memory Bandwidth

Theoretically, the GeForce 8800 GTS (G92) should perform much faster than the GeForce GT 220 GDDR3 in general. (explain)

GeForce 8800 GTS (G92)		62080 MB/sec
GeForce GT 220 GDDR3		32384 MB/sec
	Difference: 29696 (92%)

Texel Rate

The GeForce 8800 GTS (G92) is quite a bit (more or less 316%) faster with regards to texture filtering than the GeForce GT 220 GDDR3. (explain)

GeForce 8800 GTS (G92)		41600 Mtexels/sec
GeForce GT 220 GDDR3		10000 Mtexels/sec
	Difference: 31600 (316%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce 8800 GTS (G92) is a better choice, and very much so. (explain)

GeForce 8800 GTS (G92)		10400 Mpixels/sec
GeForce GT 220 GDDR3		5000 Mpixels/sec
	Difference: 5400 (108%)

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 (in units of MB per second) that can be transported across the external memory interface in one second. The number is calculated by multiplying the bus width by its memory speed. If the card has DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total texture units by the core clock 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 most pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.