Just installed an H90 closed-loop CPU cooler. So far so good, but then...
... I went and read the instructions. The last page said to install the radiator with the hoses at the bottom. I never thought about it and have mine installed with hoses at the top. Apart from some bubbling noises for the first five minutes, it seems OK - temps about 42C idle up to mid 70s under 100% CPU on Prime95, CPU is a i7-3770 (non-K), 3.9GHz. Does this seem OK?
Also, just realised my motherboard supports voltage-based CPU fan speed control. Currently this is enabled and the pump is running about 760rpm at CPU idle, have seen it jump to around 1200rpm and around 1500rpm. Am I asking for trouble leaving it like this or is this OK?