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Unstable 14900kf under high load (alien.top)

submitted 1 year ago by [email protected] to c/[email protected]

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I have a 14900kf that is having some issues being stable while under large multithreaded workloads. For example, running r23 or compiling c++ code with all the threads used, it'll crash every time within 6 minutes or so. If I use maybe 80% of the cores, it's completely stable.

I've tried different ram, different PSU, underclocking, with and without XMP and doesn't seem to matter.

Any ideas what else I can try?

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[–] [email protected] 0 points 1 year ago (1 children)

Sounds like an interesting one, now that you have updated the bios and things have improved until you up the power limit, it could even be the mobo’s VRMs. My first 9th gen mobo ran fine with the i3-9100 I used in it, upgraded to a 9600k and it used to BSOD when pushing the CPU to 100% for more than a few minutes, couldn’t even load all the way into windows when the 9900kf came along lol. Turns out the board was advertised as compatible but reading around I found out the VRM phases were insufficient to supply stable power to the higher load CPUs.

[–] [email protected] 1 points 1 year ago

Other people have said they are having no problem pulling 400 watts from the mobo I have. It's still possible that my mobo is the issue. I ran hardware info to record a couple times and didn't see any voltage drops before the crash. Should I expect to?