GeForce GT 220 GDDR3 vs Radeon HD 6970

Intro

Compare all of that to the Radeon HD 6970, which comes with a core clock frequency of 880 MHz and a GDDR5 memory frequency of 1375 MHz. It also uses a 256-bit bus, and makes use of a 40 nm design. It is made up of 1536 SPUs, 96 TAUs, 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

As far as performance goes, the Radeon HD 6970 should theoretically be much better 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 should be much (about 745%) better at AF 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 a lot (approximately 463%) faster with regards to FSAA than the GeForce GT 220 GDDR3, and also will be able to handle higher 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: Memory bandwidth is the largest amount of data (counted in MB per second) that can be transferred across the external memory interface in one second. It is calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This is calculated by multiplying the total texture units by the core 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 a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the core speed of the card. 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 lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.