i7 7700k 35%load @100 degrees Celsius. HELP!

I've seen many motherboards nowadays pushing far too much voltage to the CPU on auto voltage, way more than is necessary at least. I remember a Paul's Hardware video where the motherboards he was attempting to review were pushing 1.4V to the CPU on auto. My MSI z97 gaming 5 tries to push 1.45v to my 4790k on auto settings, even though it only needs about 1.15v to function perfectly at 4.4ghz, and 1.25v to function at 4.7ghz, dropping package load temps from 105C+thermal throttling to 85C max on the same P95 v26.6 small fft's load, on the same Cryorig H7.

Your best bet is to run manual voltages.

I was also super terrified when I saw my temps skyrocket the first time.

Make sure you are running P95 version 26.6. Newer versions place wayyyyyyyy too much load when stressing the fpu's. If you tried to run version 29.8 like I once did, yeah, everything overheats almost instantly. Somehow, I can run v29.8 on my i5 4460 for hours on end with a Hyper tx3 (92mm tower cooler), and temps never go above 55C, but even running it on a single thread of my 4790k can push the whole cpu's temps to well over 100C in seconds.

I wish I could test with Cinebench. It gives me this nasty error readout every time I try to launch it, and I have yet to find a solution anywhere on the net.

I wouldn't delid it unless it continues to thermal throttle on the 212 evo with manual voltages. If you ever get to that point, I'd also lap the lid and cooler cold plate just to ensure maximum heat transfer. My old H100i has air in it and gargles like a drowning person, plan is to carve the thing open and mod it with a mini reservoir in the loop. AIO's tend to be hit'n'miss, as seen by the plentiful, ever-growing number of threads claiming 95C idle temps with a brand new H110i GTX or H100i v2. TL;DR don't rely on the H100i for consistent temps. Stick with the 212 evo for now. It'll be hotter than a properly functioning 240mm AIO, but more consistent for troubleshooting's sake.

Do keep in mind that the 7700k is a very hot chip, since at its core (lol good pun), it is a factory overclocked, binned 6700k.

If you decide to return the whole thing, the Ryzen 5 1600x seems to be friggin' amazing for the money.