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post #2611 of 7221
Install AIDA64 and see what your actual Vcore voltage is. If it's holding at 1.215v then I'm very impressed! My 6850k needs 1.300v for 4.2ghz...the VID won't allow anything less than 1.298v. Also, are you running Vcore at a manual setting of 1.215v or Adaptive with a 1.215v Turbo?

You may also want to go into your settings and check VCCIO and VCCSA as those voltages seem very high if left on Auto.
Edited by Fidelity21 - 8/28/16 at 8:59am
    
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post #2612 of 7221
Hey,

thanks for responding.

I'm actually using Adaptive with a 1.215v offset.
post #2613 of 7221
Quote:
Originally Posted by ypaul123 View Post

Hey,

thanks for responding.

I'm actually using Adaptive with a 1.215v offset.

Hopefully you meant adaptive with 1.215 Turbo, Auto for offset. If not, change it pronto!
post #2614 of 7221
Quote:
Originally Posted by djgar View Post

Hopefully you meant adaptive with 1.215 Turbo, Auto for offset. If not, change it pronto!

These are the settings
post #2615 of 7221
So it looks like you have it set to Auto for Turbo Mode offset. What's AIDA reporting the CPU core voltage at during a heavy load? Also, looks like your System Agent voltage is 1.328v? Is so, may be worth lowering that and also checking on VCCIO as both of them tend to stay high if left on Auto. Something like 1.05-1.1v should be good as reported by several people on here, although I had to keep VCCIO at 1.100v and VCCSA at 1.144v as anything less would cause instability.
    
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post #2616 of 7221
I'm guessing that since he has both in Auto the MB is setting it to 1.215 in full turbo situations.
post #2617 of 7221
Project undervolt continues, but nothing more than confusion and confoundment to report this weekend - summary of prior, then the update:
Quote:
Originally Posted by cekim View Post

Previous, very stable starting point - weeks in this config under heavy usage without issue:
RVE: 128G - 8x16G 3000CAS14@1.35 4.4@1.35v adaptive | 3.7@+0.29 offset | SA@Auto (1.2v per Aida64 and bios)

I had previously experimented with SA and while I could boot/run as low as 1.15, ultimately that failed to prove stable-stable (vs the Benchmark standard of seeing a win10 desktop ;-))

So far I've tried:
a. -0.200 (produced a 0.675v reading of VCCSA in aida64!! How does that even boot? but it does...)
b. -0.100
c. +0
d. +0.100
e. +0.200

All crashed.
Can't fix SA and adapt core which is a bummer, but so be it, core set to 1.35, cache to 1.29 and off to the races with fully-manual SA:

1. Seems I can put just about anything in there and it still boots (assuming something is setting/enforcing a floor here, but Aida64 shows a variable and very low voltage reflecting my settings, so not entirely sure what's going on.

2. Spent most of my time around 0.90-1.00 in smaller increments as that was the region that showed the most promise (passing aida64 for 15+ minutes in some cases, BUT

3. nothing made it through H.264 encoding of RB, ranging from encoding error to spontaneous reboot

4. curiously, the system seemed as stable at 4.5 as it was 4.4 - I got the same range of Aida64 success+H.264 crash

5. same goes for offsets of AVX in both cases. Pegging AVX at 4.0GHz in either 44 or 45 multipler bought me nothing in stability - though lower temps obviously.

6. Curiously, DDR4 smiled and hummed in both windows and stressapp through all of this - not one single setting produced a memory error.

7. Vin remained only able to make things worse from 1.90-1.95

So, I see some hints of either 4.5GHz or lower 4.4 voltage in there, but the magic incantation eludes... So, back to work with the stable 4.4/3.7/SA=1.20 setup...
post #2618 of 7221
is it an OK configuration ??
post #2619 of 7221
Hi,

My computer setup:
i7-6800k
Noctua NH-D15s (single fan only)
Corsair 780T case (stock fans)
Asus X99 Deluxe U3.1 (version 1 only - BIOS updated to latest)
Gskill ripjaws 32GB RAM (4x8GB)
Geforce GTX 760 (soon to be GTX1070 or 1080)
Corsair AX860i power supply
Samsung 950 Pro M.2 SSD - 512GB
Samsung 850 Pro SSD - 512GB
WD Black 4TB HDD
WD RE 6TB HDD
Windows 10 Pro 64bit

My usage = Photoshop / Lightroom / Light premiere (to study it this year) / Light after effects (to study it next year) / Light gaming (Starcraft 2 - once or 2x a week)

My comfortable voltage = 1.25v

I tried to overclock as high as I can on a 1.25v as i've read that more voltage would not be good for the long term.

Here are my results: (overclocked using BIOS)

Speed/Volt/XMP/Results
4.2 / 1.25 / No / Fail
4.1 / 1.25 / No / Fail
4.0 / 1.22 / No / Good (40mins with max core temps from 64-70)
3.9 / 1.22 / XMP / Good (24mins with max core temps from 62-67)
4.0 / 1.22 / XMP / Fail
4.0 / 1.23 / XMP / Fail (system restart - 3min mark)
4.0 / 1.24 / XMP / Fail (system hang - 9min mark)
4.0 / 1.25 / XMP / Good (70mins with max core temps from 66-76)

Software used:
RealBench 2.43 - upto 4GB RAM
Core Temp 1.2
CPUID HWMonitor

Question:
1) Should I set my settings to 4.0/1.22v/No XMP or 3.9/1.22v/XMP or 4.0/1.25v/XMP ?
2) Was I right to increase Vcore to stabilize XMP (from 1.22v to 1.25v) or would it be better to increase System Agent (VCCSA) and/or VCCIO ?
3) How do you increase VCCSA and/or VCCIO? Do I raise it simultaneously or do I raise one first? If so, which one and by how much?
4) Is 1.25v really safe for long term use? If not, what would you suggest?

Thanks
Edited by joms - 8/29/16 at 12:48am
post #2620 of 7221
So I've OC's my 6900k to 4.2 at v1.215
i was wondering

1) I ran adia stability test for 20 min and i was reaching 50c with no crashing, is it enough ?
also I ran cinibench without any issues (scored 1500+)


2) is v1.215 a solid settings or could it damage the PC in some way

thanks
Edited by ypaul123 - 8/29/16 at 1:24am
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