GeForce GT 220 GDDR3 vs Radeon HD 6970

Intro

Compare those specs to the Radeon HD 6970, which features GPU clock speed of 880 MHz, and 2048 MB of GDDR5 RAM set to run at 1375 MHz through a 256-bit bus. It also is comprised of 1536 SPUs, 96 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 220 GDDR3		58 Watts
Radeon HD 6970		250 Watts
	Difference: 192 Watts (331%)

Memory Bandwidth

In theory, the Radeon HD 6970 is 443% faster than the GeForce GT 220 GDDR3 overall, due to its greater bandwidth. (explain)

Radeon HD 6970		176000 MB/sec
GeForce GT 220 GDDR3		32384 MB/sec
	Difference: 143616 (443%)

Texel Rate

The Radeon HD 6970 will be a lot (about 745%) better at texture filtering than the GeForce GT 220 GDDR3. (explain)

Radeon HD 6970		84480 Mtexels/sec
GeForce GT 220 GDDR3		10000 Mtexels/sec
	Difference: 74480 (745%)

Pixel Rate

The Radeon HD 6970 is much (more or less 463%) better at anti-aliasing than the GeForce GT 220 GDDR3, and also able to handle higher screen resolutions more effectively. (explain)

Radeon HD 6970		28160 Mpixels/sec
GeForce GT 220 GDDR3		5000 Mpixels/sec
	Difference: 23160 (463%)

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 max amount of information (in units of megabytes per second) that can be transported over the external memory interface in one second. It is calculated by multiplying the interface width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the clock 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 fill 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 ability to reach the max fill rate.