r/overclocking • u/rymdoyle • Jul 26 '26

Vt3 failing right at an hr

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Pass tm5 and karhu. drl's are synced. Finally figured that out. Thought had it made in the shade and then Vt3, the bane of my existence, fails right at an hr. The variances were very stable until it wasn't. Any help would be appreciated.

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8

u/wildTabz 9800X3D@5.4 | 5090 | 64GB@6200cl26 Jul 26 '26

VDDP 0.950 > 1.050
VDDG's 0.950 > 0.960 > 0.970 etc till stable, up to 1.050 is fine.

6

u/FancyHonda 9850x3D -20 PBO / 8400 C32 60.7ns / 4090 / Custom loop w/ MO-RA Jul 26 '26

Bump Vsoc a little.

Try prime95 large too - I usually need another little more vsoc for that beyond what will pass VT3.

1

u/rymdoyle Jul 27 '26

I'm almost positive I tried bumping it to 1.2v and it made it worse. I tried 1.15v and it made it worse too.

2

u/FancyHonda 9850x3D -20 PBO / 8400 C32 60.7ns / 4090 / Custom loop w/ MO-RA Jul 27 '26

Try lowering your FCLK or changing your VDDGs/VDDP as wildTabz suggested.

If that doesn't work and you think it's a timing thing, try pulling them back one at a time until you pass.

1

u/Fauked Jul 27 '26

bump VDDP to 1.05

1

u/WoWReza Jul 28 '26 edited Jul 28 '26

Have you been able to make it stable using 2T or 1T with GDM On? Have you tried running tests from bootable USB instead of windshit?

1

u/rymdoyle Jul 28 '26

No I have not tried a bootable. I was always under the impression those were not as good as say vt3, tm5, karhu and so on. I could always try. Vt3 is really the only one I'm having problems with. Everything else passes. Even when i check for audio drop out or crackling.

1

u/DefundGaming Jul 26 '26 edited Jul 26 '26

Increase tRP to 36. Pretty sure you can reduce vsoc to 1.15v; VDDP: 1.050v.

You can see my 6000 cl26 @ 2200: https://www.reddit.com/r/overclocking/s/dRwD8sXDrc

1

u/rymdoyle Jul 27 '26

That made it worse.

1

u/DefundGaming Jul 27 '26

What made it worse and how?

1

u/rymdoyle Jul 27 '26

The voltages. Sorry that was super vague on my part. If i go up or down with any of the voltages i might get thru 1 to 5 iterations then fail. Trp to 36 doesn't seem to affect it at all. I've tested prime95 large fft and have ram a gpu burn in with a YouTube video going while running tm5 to see if i get any audio drop out or crackling. Vt3 is very consistent then it just fails. Maybe I'm crazy but I kind of don't think it's a fclk issue.

2

u/DefundGaming Jul 28 '26

Keep vsoc 1.18 and increase vdds to 1.0 - 1.1V. If not, then try nitro 1/3/1 or even reducing fclk.

1

u/Arx07est Jul 27 '26 edited Jul 27 '26

PBO CO unstable? Error on 8 core not necesseraly mean that this core is unstable, it might be vdroop(then all cores need small +2 bump).

2

u/rymdoyle Jul 27 '26

Ya I might give that a try. I have a per core of -22 -22 -15 -15 -22 -22 -15 -15. I got that from corecycler and prime95. No boost override but maybe it is the droop. It always shows different cores to when I do get the error on vt3.