Yeah, I never had the blue screens until after updating my Bios, lately I've just been keeping the "Hybrid SLI support" option disabled to avoid the annoyance of tweaking with it further to get it working again.
Oh, and I did do some research on the side, the latest news or update I found on the topic was back in 2008, and they listed the 9800GTX and the 9800GX2 as the two only comparable cards. Anything newer beyond that seems that remotely bears the topic of "Hybrid SLI" applies only to Laptops.
But if you are curious about system specs,
Windows 7 Ultimate, 64bit
Kingwin Mach-1 1220 Watt PSU
2X EVGA GTX 470s in SLI
ASUS M4N75TD Motherboard with NForce 750a Southbridge
AMD Phenom II X6, 3.2 GHz CPU
6 GBs of RAM, DDR3 1333
4 Hard Drives, with Intel 80GB SSD for Operating System
Creative Labs Fatal1ty X-FI Titanium Edition Sound Card
BFG Ageia 100 Series PhysX Card