Is my ryzen 3600x faulty?

[Mr crowley]

Hi
First off sorry to the people in the taichi thread who are sick at the sight of me by now!
I've been going through the process trying to diagnose a 4 month long crashing problem with games, borderlands 3 gets a UE4 fatal error and either CTD's or locks up the pc, forza horizon 4 just closes with no error message but event id 1000 shows up in the viewer. This can happen about 20 mins into gameplay or hours.
I've RMA'd one set of memory over it which was sent to manufacturer for repair/replacement, it was 8 pack DDR4 3600 C16. It crashed less at lower clock speeds, when I ran memtest it failed on 3rd pass. I'm starting to think this is not the problem as i'm currently using a cheap but brand new set of corsair vengeance 3200mhz, it's been absolutely faultless for about three weeks but over the last 2 days the exact same problem has come in again.
I've tried all of the windows and driver fixes for all components including chipset drivers, system file checker and the BIOS is updated on the motherboard (X570 taichi). I don't think windows is the problem since it fails memtest. Running memory at exact XMP settings and timings. I tried upping the ram voltage too.
Could I have a faulty IMC which I think is on the CPU?
The rest of the system is superflower 750W 80+ gold psu, tried 2 graphics cards my old GTX 1080 and now on 3070, an asus xonar 5.1 sound card which has the software installed, CPU is cooled by a corsair H100X. I am also using phanteks braided cable extensions on the CPU.

 

[Mr crowley]

using 2 slots, the first and third. I clocked the 8 pack ram all the way down to 3000 and it crashed still, i'll try with this set i suppose. I haven't actually put this set through memtest yet either. I also have a brand new set of 8 pack ram to go in, surely if I test that too and all 3 have the problem I can eliminate the possibility of ram problems?

 

[Mr crowley]

Fair enough I wasn't aware of that, I'll give it a try

 

[Mr crowley]

So, thanks for that tip but it still crashes in the second and fourth slots I'm afraid! I'll try to get this image of the ue4 error uploaded

edit: easier for me to type it out, imageshack isn't what it was!
Title:the UE4-oakgame has crashed and will close

Fatal error!

Unhandled exception:EXCEPTION_ACCESS_VIOLATION writing address 0xcffffffffffffffcf

0x0000000143642633 Borderlands3.exe!UnknownFunction[]
0x0000000143643b16 Borderlands3.exe!UnknownFunction[]
and so on
further down: 0x00007ffce7c97034 KERNEL32.DLL!unknownFunction[]

 

[Mr crowley]

I had SOC turned off, PBO turned off and i've clocked ram down from 3600 to 3400 so far. It's crashed twice in two weeks, one was literally as I opened forza horizon 4 on the starting video, the other one which just happened was 90 mins into playing borderlands 3
edit- i've also added more fans as part of a planned upgrade, 3 noctua p12 1700rpm mounted as intake at the bottom which has dropped gpu temps by a couple of degrees. That obviously hasn't had enough of an effect on stability. and a bit of misinformation on my part, the corsair vengeance which i'm using temporarily is rated 3600mhz so I started at that and so far because it's crashed so infrequently, i've only tried down to 3400

 

[Mr crowley]

Thanks for that. I've clocked the cpu down from 3800mhz to 3750 at 1.1v, i'll give it some time to check the stability

 

[Mr crowley]

Two weeks on not a single crash with - 50mhz clock speed, that's definitely stable in my eyes. I might take the plunge and try that new set of 8 pack 3600mhz ch16 which I've got from before, see how it handles the tighter timings coming from the ch18 vengeance. I'd probably best compare 3dmark physics scores between them too

 

[Mr crowley]

It took three weeks but it crashed again! That's with CPU at 1.15V, -50mhz, ram at 3600 with IF at 1800, SOC at 1.17. At this rate i think i'm prepared to just live with it if it's only going to crash that often, just think only about 17 more crashes till the cpu gets changed anyway! But knowing my luck it will gradually worsen again

 

[Mr crowley]

I mean if it's definitely the cpu that's faulty. ocuk already replaced the 8 pack ram which it turns out wasn't the cause, it's just the other possibility is the board which was not from here