Originally Posted by BradleyW
I sent my D14 back. It had a concave base and i was hitting 95c CPU temps. Silver Arrow was Â£25 cheaper and far more effective at cooling my around 30-40c! Get the Silver Arrow, cheaper and far better made than Noctua. I know many people who have had defective D14's.
They have a convex base to mate with the concave of the IHS on CPU's.
But when you say many people, that is either pebkac and only 1 or 2 have a real defective product. Or said people don't know how to install a cooler and or using other methods of spreading TIM instead of the way Noctua tells you.
I have the D14 on my 1055T and that is clocked at 3.6 GHz and barely 43 degrees at full load on small FFT's in Prime95.
So I have to question your 4.0 GHz i7 with a temp of 30-40c, maybe at Idle but there is no way your getting that on full load. Idle temps mean nothing.
Also my Idle is 19-20c Core and 25c from the socket.