Zotac gtx280 amp! edition causing heat problems

hello all!

i've been having a few problems since the warm weather has kicked in because my pc is predominantly watercooled and there is a lack of fans to shift air (several radiators instead). when im playing on high graphics games like crysis warhead on max settings it doesnt lag as such, there seems to be some sort of latency problems..

ill try and explain this as best i can; if theres an intense firefight and i move the mouse or press buttons itll carry on doing what it was previously, for example moving forward and then needing to move left, itll carry on moving forward (still being shot at or whatever) and suddenly appear where i should have been moving to, but without any lag, a few seconds afterwards or sometimes longer

ive figured it might be my 280 cooking the northbridge above it because it burned my hand when i switched off the machine (not fun) so ive, for now, moved the 280 into the second pci-e slot lower down

as much as it seems to be a temporary fix, would putting a waterblock on the gtx280 help stop it from cooking everything else around it? and what could you recommend?

thanks in advance!

p.s the northbridge is connected via heatpipes to other chips on the mainboard so replacing that wouldnt be fun

^+1, just get even some low rpm 120's and that should do