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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I also had the problem with a 14900k, ordered another 14900kf. No problems with this cpu. It seems there are more doa cpus out there with 14gen.
You need to figure out whether this is a memory or CPU issue. For starters make sure your windows is completely updated. I have a 14900kf too and I had instability on older windows versions that weren’t fully updated.
Fully test your memory, memtest86 over night, tm5 w/ anta-extreme config, let run several hours, xmp disabled of course. Make sure your memory sticks are in a2/b2 slots of motherboard, not a1/b2. Make sure your bios is updated and chip set, Intel me, Intel me firmware and Intel serial io drivers are installed.
I’d suggest reseating your CPU and memory as well. Also make sure all of your PSU cables are gully inserted into the PSU (if modular) and the motherboard. If you’re using a pcie GPU, reseat that as well. Test again.
After ~12 hours of stress testing, a bios reflash, and OS reinstall, it’s working great now. I don’t know exactly what the problem was, but I can now recreate it if I raise the Turbo Power Limit. Even numbers as low as 270watts (with good temperatures) will cause it to crash exactly like i described in my original post.
Glad to hear you made some progress! Weird that reaching a certain power limit causes the system to crash though… Makes me wonder if your PSU is faulty if your temps are good. Honestly, it may also be worth checking the pins on your motherboard. Ensure none of the pins are bent.
What cooling solution are you using, and what temperatures are you reaching?
Ek nucleus 360. Temps are fine.when underclocked, I had it down to 60c under load and it still crashes.
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.
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?