GeForce 8800 GT 1GB vs GeForce GT 220 GDDR3

Intro

Compare all that to the GeForce GT 220 GDDR3, which features a 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 features 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 GT 1GB		105 Watts
	Difference: 47 Watts (81%)

Memory Bandwidth

In theory, the GeForce 8800 GT 1GB should be much faster than the GeForce GT 220 GDDR3 in general. (explain)

GeForce 8800 GT 1GB		57600 MB/sec
GeForce GT 220 GDDR3		32384 MB/sec
	Difference: 25216 (78%)

Texel Rate

The GeForce 8800 GT 1GB should be much (approximately 236%) better at texture filtering than the GeForce GT 220 GDDR3. (explain)

GeForce 8800 GT 1GB		33600 Mtexels/sec
GeForce GT 220 GDDR3		10000 Mtexels/sec
	Difference: 23600 (236%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce 8800 GT 1GB is superior to the GeForce GT 220 GDDR3, by far. (explain)

GeForce 8800 GT 1GB		9600 Mpixels/sec
GeForce GT 220 GDDR3		5000 Mpixels/sec
	Difference: 4600 (92%)

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 MB per second) that can be transported across the external memory interface within a second. The number is calculated by multiplying the interface width by its memory clock speed. If the card has DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.