Well here is my result.
Specs:
2600k @ 4.8 ghz
ddr3 1600 g-skill ripjaws 8-8-8-24-1T
Giga P67-UD7-B3
3x7970 @ 1201/1630 @ 1.218v
3xKoolance vid-797 WBs
Raystorm CPU Wb
rads rads rads
fans fans fans
Odd moment here : tri-fire kicks in only from second run of Heaven ( same occurs in Metro 2033).
Played BF3 for hours -> no bsods
Played SS3:BFE max max max settings -> no bsods
Ran Metro 2033 bench -> no bsods
Ran 3dmark xtreme preset -> no bsods
Ran Heaven 3.0 -> no bsods.
Decided to take the screen shot with GPU-Z -> GPU-Z 5.9 causing Bsods, driver stops working 0o. Is that because I flashed the bioses of the cards ? or is that the 4-way love between CCC->Trixx->Afterburner->GPU-Z ? no clue. Hmmm maybe 6.0 will fix that issue.