Lost the backplate that comes with the Noctua NH-U9B SE2
cpu cooler. The cpu to be cooled is an i7-3770T
(Max TDP: 45 W).
Is it ok to install the above cooler with the above cpu but without the backplate?
Is it ok to put a piece of solid carton with aluminum foil on top and a square hole cut in the middle of the carton but not the foil, as large as the stock backplate of the motherboard, as a substitute for Noctua's backplate?