If you do not already have major issues here's a tip that MAY keep your system in good shape. Find two or three old stock cpu heatsinks, clean the bottoms, remove all plastic fans and hardware, feel the back of the amp plate after it's been on for an hour or more, you should feel two spots that are warmer than the rest of the plate, get some super glue and put a spot in the corners, orient the fins on the sink so they run vertically and press the sink onto the hot area. Cover both spots with a sink and it may help prevent issues from appearing I've got three ultra setups running that way now for three years without one problem.