I currently have 1 8800 GTS video card...will the PC power and cooling 610 watt PSU enough to power two of them in SLI or will I need to upgrade?
2 GB corsair dominator ram
2 36gb raptors
Asus p5B deluxe wifi
5 noctua 1200RPM fans
P5B Deluxe = intel 965 chipset (Crossfire capable w/BIOS update)
SLI = Nvidia chipsets (example 680i chipset) nvidia will do SLI, not Intel chipsets.
You have to find how many amps (not watts) you have on your 12v volt rail(s) on youir PC Power PSU. The minimum specs for required amperage for those two cards should be around here somewhere.