GeForce GT 220 GDDR3 vs Radeon HD 6950

Intro

Compare all that to the Radeon HD 6950, which makes use of a 40 nm design. AMD has set the core frequency at 800 MHz. The GDDR5 RAM works at a speed of 1250 MHz on this model. It features 1408 SPUs along with 88 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 220 GDDR3		58 Watts
Radeon HD 6950		200 Watts
	Difference: 142 Watts (245%)

Memory Bandwidth

In theory, the Radeon HD 6950 will be 394% faster than the GeForce GT 220 GDDR3 in general, because of its higher data rate. (explain)

Radeon HD 6950		160000 MB/sec
GeForce GT 220 GDDR3		32384 MB/sec
	Difference: 127616 (394%)

Texel Rate

The Radeon HD 6950 should be much (about 604%) faster with regards to texture filtering than the GeForce GT 220 GDDR3. (explain)

Radeon HD 6950		70400 Mtexels/sec
GeForce GT 220 GDDR3		10000 Mtexels/sec
	Difference: 60400 (604%)

Pixel Rate

The Radeon HD 6950 will be a lot (more or less 412%) better at anti-aliasing than the GeForce GT 220 GDDR3, and should be capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon HD 6950		25600 Mpixels/sec
GeForce GT 220 GDDR3		5000 Mpixels/sec
	Difference: 20600 (412%)

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 largest amount of data (measured in megabytes per second) that can be transferred across the external memory interface in one second. It is calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The higher 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 one second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.