I agree that a good 500w can handle a quad + 2xG92, but not much OCed. Considering that this is the XS forum, it seems funny to me to say PSU is doing alright while running Orthos, because there is no real load to the gpus! I am writing this, because I was OCing a Q6600 yesterday and while running Linpack at 4GHz my 530W unit went to its knees. It took 420W from the socket and that's with a lame 7300GS card. It is somewhat short-sighted not to divide applications like xtreme OC, slight OC or stock and just say that a 500w can handle it all. So to anyone runnin near the units capacity and saying it's completely fine, try this - run F@H on every gpu and Linpack (Intel Burn Test) on the cpu and watch your PSU turn into smelly fireworks