I thought you would enjoy experimenting…
I think I have a bad copy of 14900k (or maybe it doesn’t like my Asus Rog Maximus Z790 Hero mobo). I actually have to underclock it (55P/43E) to make it perfectly stable - but that also makes it more power efficient. Otherwise I get HQP and Lightroom crashes or even BSOD.
Change Actual VRM Voltage to offset mode. Then change + to -, then put 0.07 and put P57 and E44. Extreme tweaker and down, almost at the end.
I have an Asus Apex Encore and before KS I had three 14900Ks, so I remember the appropriate settings.
What cooling do you have?
Thanks for the advice. I just tried it, but unfortunately I still get crashes. I think I’ve tried every single tweak I could think of over the last few months. I have come to the conclusion that intel has been releasing bad batches of these CPUs.
There’s definitely something wrong if the standard settings don’t work. If you want us to investigate further, send a private message. And batches are good.
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If RAM is not stable, it will keep crashing under load. So my standard chore is to run memtest86 at least 24 hours and make sure it doesn’t spit out any errors during the test. If 24 - 48 hours testing passes without errors, then you can be relatively confident the RAM works properly.
It is also very important to check that you have latest BIOS with latest CPU microcode version 12B.
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That’s good advice, Jussi, thank you! I’ve been struggling with this CPU for months, but now I can envision a few scenarios in which it could become stable at its “stocks” settings or even overclocked a bit. I’ll run more tests soon.
It’s great to find so many people here who are passionate and devoted, and always willing to help others! 
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When you say that HQPe crashes even with the stock settings, are you seeing kernel panic type errors on your screen? Unclear what is actually crashing.
CPU: My 14900k is very stable at stock settings and even overlocked to P61x2 + E48x4. There is no reason you should have issues. I didn’t find under volting really benefited in any way so I just went back to auto.
RAM: @jussi_laako is right about the ram tests. It takes hours of memtest before you really know if it’s stable at whatever speed you have set. My DDR5-7200 is only completely stable at rated 7200.
Motherboard: I wonder if this is where your issue is. What board are you using? Edit - I see your board above, you shouldn’t have any issues with that board obviously.
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I’m now pretty sure that the instability comes from the 4 sticks of RAM I currently have :
4 sticks seem to cause a lot of instability.
I’m going to upgrade to 2x48 (for my photography needs), but I’m not sure yet which one to go for.
Buy these because you have so good mc sp score. And they are mobos QVL list. SK Hynix M-die same as mine.
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I also found the teamgroup sticks to work well. TEAMGROUP T-Create Expert Overclocking 10L DDR5 48GB Kit (2 x 24GB) 7200MHz (PC5-57600) CL34 M-DIE Desktop Memory Module Ram Black - CTCED548G7200HC34ADC01 at Amazon.com
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W** I posted same before but not in stock. I have TG 2×24gb 8000mt/s myself.
I’ve been using CORSAIR Dominator Titanium RGB DDR5 6000MHz CL30 and they’ve been solid.
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I try to offer 2×32gb, but he needs more. And after mc sp was 92 we go for max speed. I have 91 on my KS. (SP is Asus thing)
Thanks guys! It looks like I might have found a stable approach to 58P/44E with my 4 sticks of DDR5 RAM @ 6200 XMP2. Fingers crossed. If it is stable, I will be very happy. I don’t really care about benchmarks at high load. For my use, it seems more logical to tune the PC for light to medium loads, with higher clocks. 5800 mHz is pretty decent.
Edit: I have optimized a stable, responsive, efficient and quiet configuration at 44E/58P and 7200 XMP. I mainly used a combination of ACLL and some other tweaks of my own.
Cinebench score? And you have to stress test mems before they are stable… You will get bluescreens like before.
You have memtest in bios. Tool - memtest run that to the end. And 0 errors. Its memtest86 if I remember correctly…
1 error = 1 bluescreen. And its one of the easiest test there is. Take photo from the test and send it to me.
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If anyone else runs into stability issues, I learned that it’s always best to start by checking the RAM. Thanks for your help, everyone!
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There are dozens of articles online, YouTube etc. that advise that two sticks of DDR5 RAM is much more stable than four sticks, when activating XMP settings etc. in BIOS. As has been mentioned by others, I use 2 x 48gb DDR Corsair Dominator Titanium at 6000mhz (max 6400) and has been stable. I learnt the hard way having four sticks of RAM a year ago and it was unstable. For cosmetic purposes I bought two Light Enhancement sticks to fill out the empty slots.
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So did I. I will never use 4 sticks again.
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This should be also pretty decent: