Radeon HD 5670 vs Radeon HD 6950

Intro

Compare that to the Radeon HD 6950, which comes with clock speeds of 800 MHz on the GPU, and 1250 MHz on the 1024 MB of GDDR5 RAM. It features 1408 SPUs along with 88 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5670		61 Watts
Radeon HD 6950		200 Watts
	Difference: 139 Watts (228%)

Memory Bandwidth

As far as performance goes, the Radeon HD 6950 should theoretically be quite a bit superior to the Radeon HD 5670 in general. (explain)

Radeon HD 6950		160000 MB/sec
Radeon HD 5670		64000 MB/sec
	Difference: 96000 (150%)

Texel Rate

The Radeon HD 6950 will be a lot (more or less 354%) better at texture filtering than the Radeon HD 5670. (explain)

Radeon HD 6950		70400 Mtexels/sec
Radeon HD 5670		15500 Mtexels/sec
	Difference: 54900 (354%)

Pixel Rate

The Radeon HD 6950 is a lot (approximately 313%) better at AA than the Radeon HD 5670, and also will be capable of handling higher screen resolutions better. (explain)

Radeon HD 6950		25600 Mpixels/sec
Radeon HD 5670		6200 Mpixels/sec
	Difference: 19400 (313%)

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 maximum amount of information (counted in MB per second) that can be transported past the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics 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 Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called 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, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.