Radeon HD 5670 vs Radeon HD 6970

Intro

Compare those specifications to the Radeon HD 6970, which uses a 40 nm design. AMD has set the core speed at 880 MHz. The GDDR5 RAM is set to run at a frequency of 1375 MHz on this specific model. It features 1536 SPUs as well as 96 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 6970		250 Watts
	Difference: 189 Watts (310%)

Memory Bandwidth

The Radeon HD 6970 should theoretically perform quite a bit faster than the Radeon HD 5670 overall. (explain)

Radeon HD 6970		176000 MB/sec
Radeon HD 5670		64000 MB/sec
	Difference: 112000 (175%)

Texel Rate

The Radeon HD 6970 is quite a bit (about 445%) more effective at AF than the Radeon HD 5670. (explain)

Radeon HD 6970		84480 Mtexels/sec
Radeon HD 5670		15500 Mtexels/sec
	Difference: 68980 (445%)

Pixel Rate

The Radeon HD 6970 should be much (about 354%) faster with regards to AA than the Radeon HD 5670, and capable of handling higher screen resolutions more effectively. (explain)

Radeon HD 6970		28160 Mpixels/sec
Radeon HD 5670		6200 Mpixels/sec
	Difference: 21960 (354%)

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 maximum amount of data (measured in megabytes per second) that can be transferred across the external memory interface within a second. It is calculated by multiplying the card's bus width by its memory speed. If the card has DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.