Is my PSU ok for this build i have?

You could run that even with 27A on the 12v Rail.
It's definitely not the PSU unless it's faulty, which should have had some more visible effects.

worth me gettin a meter onto it to see what the rails are outputting?

oh just to add, the rma'd card i used to have was a 3850 too, i replaced the motherboard, followed by the ram to prove to the crappy retailer the card was faulty, ive just swapped cpu, i had a 500+ now i have the cpu mentioned above, the only things ive kept across the system have been my 2 ide hdd's and my xblade case, could this be an airflow issue? i know i use rivatuner to ramp up the speed of my gcards fan but thats only cooling the cpu, the ram is covered by the heatsink too but the mind boggles with this... from what i can tell here im using mainly performance parts with a bit of bang for buck thrown in

might aswell keep this up to date... the tech guy from ccl has lent me his 8800GTS while he takes a look at my card himself on his own time, correct me if im wrong guys but thats damn good customer service, apparently ccl have had a machine with 5 HD3850x2's go bad in it one after the other, so i guess i could just be unlucky here and have a faulty card, at least thats the theory, personally, if winamps audio doesnt stop or start looping when my vpu gets reset for no reason at all, then its pretty much so isolated to the video card, power supply checks as running really really well, its not even 3 months old yet... i dunno what theyre gonna replace it with, they dont sell hd3850's with the 256mb of ram by sapphire on there site anymore LOL