Quote Originally Posted by Solus Corvus View Post
In Cypress (and back to R600) there were 5 SPUs (Stream Processing Units) per SP (Streaming Processor).
Like in the first image here: http://www.anandtech.com/show/2841/4
Now there will be 4 SPUs per SP. And as ajaidev points out, there may be a different arrangement of simple and complex units within the SP instead of 4+1.

If they keep a grouping of 16 SPs per SIMD, and there are 1920 SPUs, then Cayman will have 30 SIMDs per chip.

The reason for such a change might be to increase utilization. It could have good results if one or two of the units in your 5 wide design are usually sitting idle. That's why RV770 and Evergreen had such a huge difference between low utilization (games) and high utilization (furmark) in terms of power-draw and heat output.
I appreciate you taking the time to educate me on that, thanks a million.

Btw... reading all of what you guys are typing about ABC's, SIMD's and all that good stuff make me feel duuuuuuumb.