We have two iMacs and a MacBook all within 8-15 feet of one leg of a slanting delta loop. I usually run 100w but crank up an amp to 500w on occasion. We have no RFI on any of the computers. The shack is on the second floor so RF grounding is marginal at best.
73,
Gary - W7TEA
73,
Gary W7TEA K3 #1001, #5763