Hello,
Sorry for the response time, a lot of work right now and with the event that there was in France, it is not easy ...
dh41400: Very satisfied by HDPLEX 250W, I used a 400W Seasonic fanless but with no graphics card it was useless. So I won space (with CR95C in a cooler master elite 110, it's perfect!). The build quality is really beautiful and there are no coil whine! While with Seasonic I had coil whine (I could ask for an exchange, my first Seasonic had a very large coil whine, horrible). The 160W is also very good and more than enough for most cpu.
Krešo: thank you for your response. you received the motherboard, the CPU and heatsink already assembled? there was no screw? really strange and it completely will justify the difference in temperature !
otherwise, these are the joys and mysteries of computing ...