Mischevious H100i?

Porkey · June 17, 2018

Alright, so I've noticed some odd behavior with my PC over the past few months...

Long story short, I've got an FX 8370 which seems to need extremely high voltage to sustain an (apparently almost) stable 4.5GHz.

The CPU thermal throttles when under heavy load, which I considered pretty normal because I have to have almost 1.5v set in the UEFI to (almost) properly sustain 4.5GHz on all cores.

But, after having another system lock up, I was just messing around with the system and booted it up at 1.35v (+50mV offset, really 1.4v), at 4.2GHz (NB and NB-voltage still at OC levels).

It still throttled in Prime95, AVX disabled.

As in the title, I'm running an H100i (the original H100i from around 2012 or so.), and it is about three years old.

I thought this was kind of weird, because back in its day, the H100i was considered pretty capable, and I thought it should be more than capable of handling a very light overclock at only 1.4v.

I did do some quick testing at stock speed (roughly; just under due to bus OC), stock voltage, and there was no throttling, but the CPU die temp reached 64C, and if I recall, the CPU socket temp went up to either 70C or 76C, I can't remember.

I used to think it was the motherboard/CPU socket overheating and throttling the CPU, but over the past few weeks I checked AIDA64 while torturing my system with work, and saw a socket temp in the mid 80s, while not throttling.

Even though the motherboard I'm using is actual shit, I am fairly confident that it's not the VRMs causing me to throttle (for now).

64C under load at stock speed and voltage is way too high for these things. Remember you're not really supposed to go over 61.

Using Arctic Silver 5, I have repasted a few times, and I still end up with temps like these.

Do you guys think it's time I look into replacing my H100i?

My OC settings:

Spoiler

265MHz bus

17x CPU multiplier (4505MHz)

10x NB and HT multiplier (2650MHz each)

1.475v CPU

1.3875v NB

My system specs: