GeForce GT 220 GDDR3 vs Radeon HD 6970

Intro

Compare that to the Radeon HD 6970, which has a clock speed of 880 MHz and a GDDR5 memory speed of 1375 MHz. It also features a 256-bit bus, and uses a 40 nm design. It features 1536 SPUs, 96 Texture Address Units, and 32 Raster Operation Units.

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 should be a lot faster than the GeForce GT 220 GDDR3 in general. (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 (approximately 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 will be a lot (about 463%) better at FSAA than the GeForce GT 220 GDDR3, and also will be able to handle higher resolutions without slowing down too much. (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: Memory bandwidth is the max amount of information (measured in megabytes per second) that can be transported across the external memory interface within a second. The number is worked out by multiplying the bus width by its memory speed. In the case of DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better 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 texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.