This is an awesome machine with only one complaint. The H100 fans are really loud especially on performance mode. I hope to get some Noctuas soon. Boot up is ok at 30 seconds to finish loading my startup items (10 programs) which includes me typing in the password which is pretty long.
The CPU temperatures vary with the temperature and because i have the computer under the desk i think it intakes the exhaust sometimes. I get a delta of usually 40 - 50 degrees C on the CPU at load and 5 - 15 degrees C idle. The GPU i more consistent with a delta of around 35 degrees C under load a 5 degrees. I live in Australia where it gets hot and the hottest i have tested the computer at is 34 degrees C ambient where it got a CPU idle of 47 and a GPU idle of 39 giving a delta of 13 and 5 degrees respectively. Under load the temperatures for the CPU and GPU idle were 84 and 70 respectively giving a delta of 50 and 36 degrees C. H100 was fitted with default fans on the low preset settings
Overall i love this build and don't plan to make any major upgrades anytime soon but a few minor ones like fan upgrades and maybe more storage. I bought the computer parts around July so prices were a bit higher but i got some parts for a bit cheaper.
FYI i have since tided up some of the cables in the front.