good lord. sell that thing and buy a card like the low power 9800gt or gt240. there is no reason to have a 236 watt card in that system for physx. and yes if you were playing a game that was really pushing physx you would likely fry your system. 42 amps is not enough for 2 hd, a gtx480, a gtx280 and an overclocked i5 all under load.
thats still a 150 watt card so do the math. he ceratinaly doesnt want to use all 42 amps. a gtx480 and overclocked i5 could easily use over 30 amps right there. a gts250 under load and factoring in the other components he could be right at 42 amps for the whole system. a gts240 is what he needs.
well thats much better but I would still sell that gtx280 and get a gt240 for physx. that will free up way over 100 watts during those game that use hardware physx. plus you will end up with some extra cash.
