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Skylake-X/Kaby Lake-X Combined Discussion - Page 603

post #6021 of 6591
I was saving the memory tuning for last in my overclocking adventure, so I just set the profile to XMP for the time being. I kept getting instability with certain overclocks that were perfectly stable with my previous memory kit's XMP profile. I turned XMP off and manually set the timings to what the XMP profile had and all of a sudden my old overclocks are stable. So I guess XMP is just bad altogether for overclocking. Something in that profile was leading to instability. I wonder what it was.
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post #6022 of 6591
Quote:
Originally Posted by cekim View Post

@LunaP @Jpmboy

(and any 7980xe tuners)

I bumped my VCCIN to 2.0 (then back to 1.9v because it doesn't seem to matter) and VCCSA to 0.95v
The result was:
Core: 4.5GHz (non-AVX - same as before - it will do 4.6 and 4.7 at higher Vcore, but not at 24/7 power/temp levels AFAIC)
Cache: 3.1 (previously 3.0 - even 1.15v would not allow > 3.0GHz)

VCORE: 1.16v (previously required 1.175v)
VCACHE: 1.10v (previously 1.05v for 3.0 --- > 3.0 was not stable)
VCCIN: 1.9v
VCCSA: 0.95v

LunaP in particular - you have ludicrously low VCORE (1.10-1.12v last I heard). Can I ask what your VCCIN is these days?

The bump from 3.1GHz mesh/cache is nice... That's become such a choke point that even 100MHz shows up quickly in real and synthetic numbers.

It was 1.112v for vcore, but I've bumped it to 1.115 just in case for stability given my ram timings/clock, since 1.37v now on RAM @ 15-15-15-35 and 300 tRFC and 32 tfaw

I did manage to get 3.2 on mesh around 1.19 I haven't messed around w/ it too much since though since I got busy with other stuff, ended up trying to update my display rig, grabbed a 43" LG then calibrated that for a few days, then ended up getting a q7f 55" tv and made that my main monitor, (Display cal takes days I swear since theres so much fine tuning...) now building up 32" monitors around it and setting my art studio back up, might have to get a desk thats slightly 6-12 inches wider than mine since hte TV takes up the full width = monitor bars for the monitor arms are kinda blocking a bit of the view so can't angle the monitors out perfectly unless I move the TV back. Can't seem to find a stand alone option to just put on the floor near em.

Back on topic...
I'm def curious on the vdroop, as iirc I'm at lvl 5 and was tempted on 6 ( will have to recheck ) I was trying for a bit to push avx but 4.2ghz for avx2 seems to be the safe area since at most I'll hit high 70's, at 4.3 I can dip into the upper 80's its a huge spike. Though if other things like vdroop and vccin could help that I'm all down for it as I wanna get to tweaking more, especially since its winter. Any tips or things to test lemme know.

VCCIN atm is sitting at 1.81

Gonna try some actual render sessions w/ some speed paints and OBS to verify just how much vs benching/stressing they utilize in comparison as I'm hoping to possibly bump avx further.

Would be GREAT if there was a utility like Process lasso that'd upclock/downclock ur AVX based upon programs you're running.

Quote:
Originally Posted by cekim View Post

Funny thing is R6E bios "auto" is 2.0v... So, yeah... there's that.

EDIT1:
Looking like LLC6 vs LLC5 might have the same effect with VCCIN @ 1.85v.

So, that suggests the ultimate issue for me is droop.

EDIT2: eventual miscompare, but better than the MCEs I used to get... so maybe 1.87v? trying now

Which would you recommend, higher or lower droop for these?
Quote:
Originally Posted by Hydroplane View Post

So far stable results for this 7980XE have been:

4.3 @ 1.1v
4.4 @ 1.13v
4.5 @ 1.19v

At 4.5 three of the cores are over 100c so that's about the limit of a non-delidded chip. Though two of the cores are still at 70c so it's very inconsistent. And this is with 26c water through the block, lol. Also managed to pull 665W from the wall.

I did manage to hit 4467 in cinebench though. With some mesh/memory tweaking I should hit 1 point per mhz. Single core score is 202, faster than an 8700K at the stock 4.7 boost smile.gif

Any settings that would help lower vcore? Gonna try setting the vccin to 1.9v.

If you're getting some cores over 100, I'd def look into clocking per core as some may not require as much voltage as others, but also gotta remember TJ etc since closest, its a game of patience. Though I'm sure people have already answewred by now as I'm still catching up on the last 5+ days worth of chat.
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post #6023 of 6591
Quote:
Originally Posted by LunaP View Post

It was 1.112v for vcore, but I've bumped it to 1.115 just in case for stability given my ram timings/clock, since 1.37v now on RAM @ 15-15-15-35 and 300 tRFC and 32 tfaw

I did manage to get 3.2 on mesh around 1.19

.

Is there a limit to the sort of daily Mesh voltages you know of by any chance?
     
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post #6024 of 6591
Quote:
Originally Posted by Radox-0 View Post

Is there a limit to the sort of daily Mesh voltages you know of by any chance?

Just replied to you on OCUK regarding this thumb.gif
post #6025 of 6591
Quote:
Originally Posted by Silent Scone View Post

Just replied to you on OCUK regarding this thumb.gif

Id like to know aswell :B
     
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post #6026 of 6591
Quote:
Originally Posted by Silent Scone View Post

Just replied to you on OCUK regarding this thumb.gif

You did indeed, cheers bud smile.gif
     
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post #6027 of 6591
Quote:
Originally Posted by Jpmboy View Post

sorry bud, I don't know the answer to that.. but someone else here must know. @Zurv


Well I managed to fix the weird RAM problems. Two of my 4gb 2666mhz sticks were faulty apparently, and only one of the remaining two could be installed and allow proper post and booting; if i added the 2nd it'd freeze. I bought that new 3333mhz 32GB Dom-Plat kit and all 4 dimms were recognized but same deal, constant "check NVRAM" or "Load VGA Bios" etc.. errors. But doing theh EZ Flash BIOS update to 1004 fixed it all seemingly, as now all 32GB is running fine.

Still haven't figured out about whether I should have gone for 64GB however, but thanks for taking time to respond and ask @Zurv about it.
 
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post #6028 of 6591
Quote:
Originally Posted by cekim View Post

a. what version (cpuz)
b. Windows updated on me, so I had to remove Intel's Turbo Boost again...
c. cpuz is a pretty lame measure of anything...
d. check your power settings - peg it to 100% minimum processor state for benchmarking

4.5Ghz:
535.6/8903 (did not disable apps, set real-time, etc.... just ran it as-is)

CBR15 is ~4350-4450 for this setup depending on how careful I am when I run it.

Sorry my very late reply.
The low score of CPU-Z benchmark comes from "phantom throttling" on Skylake X.
You can avoid this using mod bios in "http://forum.hwbot.org/showthread.php?t=171986", if you use Rampage VI Apex.
I used Bios "0026" there.
As a result, my score becomes 605/14004 @5.1GHz for Cpu-z ver. 1.82.0 x64.

https://valid.x86.fr/23hkns
post #6029 of 6591
giant loop or chilled water? voltage for that 5.1 == ?
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post #6030 of 6591
Quote:
Originally Posted by czin125 View Post

giant loop or chilled water? voltage for that 5.1 == ?

My cooling system was water with large reservoir.
In this season, water temp. is less than 15 degrees C.
The core voltage is set by core in adaptive mode.
LLC was level 7. minus offsets for each cores were from 35mv to 130mv.
And total voltages for each cores were from 1.32 V to 1.41V.
The best values for each cores were found by single core operation;
Namely, in the setting of 17 cores disable and only 1 core enable I searched stabel value @5.1 GHz and 5.0GHz.
About half numbers of cores in them had the stable voltage of 1.25V@5.0GHz and 1.32V@5.1GHz.
This way (by core setting) is not efficientt for 7900X but for 7980XE. I feel large difference FIVR in them.
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