GGTV-Jon
geninfo are you up for testing other Thermo Grizzly products - for Science!!
 
 Thermal Grizzly Conductonaut - Thermal Conductivity of this product is 73 W/mk and thermal resistance of 0.0021 K/W.
https://www.newegg.com/Product/Product.aspx?Item=9SIA4RE6M28090&cm_re=Thermal_Grizzly-_-2S7-00A9-00013-_-Product

 
Don't change EVGA CLC 280 pre-applied thermal paste. Still advice, but see #33 below for different results.
 
Removed Kryonaut.  Applied thin, even coat Conductonaut to top of IHS.  For science.
 
CPU temp increased 4C. :(
 
Checked cooler tightening.  Looser only raised temp further. (See #36)
 
Estimate CPU temps now 7C hotter than CLC pre-applied thermal paste.
 
 

GGTV-Jon
geninfo are you up for testing other Thermo Grizzly products - for Science!!

 
Proper application of liquid metal between IHS and cooler can lower temp.
 
Earlier results not matching theoretical science:
Kryonaut 12.5 wm/k
Conductonaut 73 wm/k
6x thermal conductivity leading to higher temp!?
 
Resort to desperate empirical science:
Remove CLC heat sink.
Tape sides of CPU bracket where open socket edges exposed.
Slather heat sink AND IHS with additional liquid metal.  No puddles (see #39 below).  Plus very small dot in middle of IHS.
Reattach heat sink. Screws tight.
 
Result
Loaded temperature down 18C (from 89C to 71C)!
Estimate 11C down from stock paste.
 
Note
Advice remains do not remove EVGA CLC 280 pre-applied paste.
Unless you dare instant motherboard and CPU destruction without warranty support.
Conductive liquid metal in socket = over.
 
Will liquid metal ooze when I orient vertical in case?
Stay tuned for tears.

Some graphs. Prime95 24K, in-place FFT, 5 minutes per test for 33 minutes.  Liquid temperature start  normalized; no significant ambient temp delta. 
Experimental 1.30 VCore at 44Ghz with 3200 DDR4 on XMP profile at 1.35V, with 1.166 VCCIO.
 
 First liquid metal application:

 
Second liquid metal application:

 

geninfo

bcavnaugh
Thanks for the update. Are you Planning on Overclocking your X299 Dark under LN2?

 
No.  Working on 24/7 stable creative/scientific workstation.
Theoretically custom loop next ($480), then chiller loop ($900), but EVGA CLC 280 only $130 (plus Conductonaut/Tape +$20).
 
 

bcavnaugh
Air/water cooling lock/voltage/temperature range
With a good aircooling or watercooling setup that can handle full load temperatures under 80 °C common Skylake-X processors can reach stable frequency around 4.9-5.3 GHz on all four cores. Special loading cases using AVX-instructions drop this bar to about 4.6-4.8 GHz due to higher stress on processor. These numbers are valid only after processor delidding and replacement of stock TIM to high-performance grease, such as Kingpincooling.com KPx.
 

 
Not for 7980XE.  From Kingpin guide:
 
"High-core count processors such as i9-7960X or i9-7980XE may drop few hundred MHz from [4500Mhz] maximum stable clock, mostly due to the thermal limitations"
 
So, they say probably 4.2Ghz max stable 7980XE+Dark without exotic cooling. 

This still Applies for the Higher End Processors as well.
"These numbers are valid only after processor delidding and replacement of stock TIM to high-performance grease, such as Kingpincooling.com KPx."
Yes you do have a "7980XE (delid, 4.3Ghz bin)"
On my Core i9 7940X is only running at 4500MHz on a custom Water Loop and higher then I have to push the vCore and for 24 Hour Operating Time it would kill the CPU after a year or two.
 
"Working on 24/7 stable creative/scientific workstation" Mine X299 Dark ATM is pushing really hard on PG.
 
Man the Forum is really crappy today or the network is being overloaded by all the new members going after their Elite Membership

Latter half of video here demonstrates liquid metal application and avoiding puddles:
 
https://www.gamersnexus.net/guides/3068-how-to-delid-intel-i9-cpu-and-apply-liquid-metal
 
Note, Steve demonstrates delidding  (between CPU and temporarily removed IHS).  
But same concepts apply when putting between IHS and cooler.

My Dark was delivered today, won't be able to see it till I get home from work - still working on getting all the peices for the build though

@geninfo - now that you have done all of that Der8auer goes and releases the direct contact frame to get the IHS out of the picture
https://www.overclockers.co.uk/der8auer-skylake-x-direct-die-frame-hs-005-dr.html
 
Video with GamersNexus
https://youtu.be/DJOVdmd7NHQ

GGTV-Jon
@geninfo - now that you have done all of that Der8auer goes and releases the direct contact frame to get the IHS out of the picture
https://www.overclockers.co.uk/der8auer-skylake-x-direct-die-frame-hs-005-dr.html
 
Video with GamersNexus
https://youtu.be/DJOVdmd7NHQ

Yes, am aware of that.
Cringed when I saw because I thought you may dare me. :p
For science? 

GGTV-Jon
ALWAYS - For SCIENCE!!

Signed up for availability notification list.
May do for second build so I can get workstation into use.
Rumor has it you have a Dark now.  What CPU?  Maybe you should advance science first? ;)

Not bad and Great Scores
https://www.3dmark.com/compare/spy/3246791/spy/2043335
https://www.3dmark.com/compare/fs/14848012/fs/13077938
 
I really have to work on my X299 Overclocking and really need to mess with the AVX2 and AVX3 Settings.
4GHz https://valid.x86.fr/zszbmd  5GHz  https://valid.x86.fr/6inny9
I did reduce my memory from 3200 to 3000 and seems to say a lot cooler all-around.

At what frequency was the CPU during all of that?
The package wattage - is that for all cores or per core?
 
I looked at your overclock.net link, mention of load line calibration made me think of this video - throwing this out there for those that have net seen it
https://youtu.be/Z8nFdFpuVBg
 

Working mesh ratio.
Saw interesting image.
 
Prime95 filling 64GB of RAM in 45 seconds

 
Prime95 test settings:
Custom
Threads = 36 (2 * cores)
Min FFT = 4096
Max FFT = 4096
Run FFTs in-place = Unchecked
Use Memory = 60,000
Time to run each size = 5
 
Must throw lots of data around mesh network between cores and memory controllers?
60,000 instead of 64,000 to prevent SSD memory paging since OS using 2-3GB RAM.
 
What can fill RAM faster or test mesh ratio better than Prime95?

Whats the VRM temps

Check Windows Event logs Viewer for WHEA CPU internal parity errors indicating overclock instability.
 
Theory
Hardware reports errors to Windows Hardware Error Architecture.
Hardware reports corrected errors (recoverable) or uncorrected errors (not).
WHEA errors in Windows Event Viewer logs.
HWiNFO has WHEA error count sensor.
Skylake-X cores detect internal parity errors.
Parity error means data in a register or cache did not get stored correctly?
Skylake-X cores fix some internal parity errors.
Fixing data before processing prevents possible core crash or memory corruption.
Ideal no parity errors.
Parity errors indicate slightly unstable overclock.
Increase VCore or lower CPU frequency.
Less common, reduce memory overclock?
 
Example
Overclocking memory, first to 3400.
All Prime95 spot tests pass.
Prime95 stability test fails at 254 minutes.
Cannot replicate Prime95 stability failure with spot tests at failing sizes (1280K->56K).
RealBench, Aida64, Time Spy, Fire Strike, Cinebench all pass.
 
Notice Time Spy demo sometimes crashes.
Time Spy application error in Windows Event log, exception code 5.
Exception code 5 means access violation - Time Spy attempts to read wrong memory?
Time Spy demo crashing more often with memory overclock?
Memory overclock at fault?
Boost DIMM voltage, VCIN, memory frequency (to 3466, in case better ratios).
Still 1 out of 10 crash on Time Spy demo.
 
Review old test data and Windows Event Viewer log:
Time Spy demo application errors in Windows Event Viewer log before memory overclock.
Update to 1.06 BIOS (Spectre fix) four days before start of parity errors.
From 0 to 5 WHEA parity errors each day.
Time Spy application errors usually within minutes of WHEA parity errors!
Parity errors start when shifting from 44x to 45x core multiplier.
 
So:
Probably not just memory overclock - WHEA and Time Spy application errors started before.
Probably not Spectre fix - WHEA errors not immediately after.
Probably WHEA parity errors and Time Spy Demo crash related - times close.
Insufficient VCore for 45x core multiplier?
 
WHEA error usually appears by 5th Time Spy demo run after restart
Start Vcore +0.001 and run 5 Time Spy demos.
1.174Vcore, Time Spy demo stops crashing, still WHEA errors.
1.177Vcore, one Time Spy demo crash; still WHEA errors.
1.180Vcore, no Time Spy demo crash; still WHEA errors. :(
Drop frequency to 44x, no Time Spy demo crash; no WHEA errors; 10x Time Spy demo runs.
Frequency back to 45X, 1.90Vcore, Time Spy demo crash; still WHEA errors. :(!
1.120VCore, no Time Spy demo crashes; no WHEA Errors; 10x Time Spy demo runs! :)
1.195VCore, no Time Spy demo crashes; no WHEA errors; 10x Time Spy demo runs.
Prime95 56K in-place FFT 5 minute test cycle comparison temps +5C (91C @ 16 minutes).

Config
From 32x Mesh Ratio config above:
VIN: 1.92
VCore: 1.1195 (can go down to 1.1191?)
VDIMM1: 1.375
VDIMM2: 1.386
Fast Boot: Off
Force Memory Retraining: Enabled
 
VDIMM2 different because BIOS actual voltage lower than VDIMM2 set in BIOS.
Those VDIMM1/VDIMM2 settings create same BIOS actual voltage for both DIMM banks.
Fast Boot off, retraining on in case lack of memory training problematic.
 
VIN and VDIMM increase while troubleshooting WHEA errors not needed?
 
May go back:
VIN: 1.91
VDIMM1: 1.35
VDIMM2: 1.35
Fast Boot: On
Force Memory Retraining: Disabled
 
Tip
Create two custom views in Windows Event Viewer.
WHEA = All events by source WHEA-Logger.
Application Error = All events by source Application-Error.
Check frequently when overclocking.
 
Refer
WHEA
WHEA Overclock Partial Instability 
WHEA Error Overclock Instability Full Discussion 
WHEA Errors And CPU Frequency
WHEA Errors Caused By Spectre Fix? 
Intel WHEA Error Decoding
Intel WHEA Error Discussion & Diagnostic

Check stress test, benchmark, or app crash with BIOS defaults (stock) settings.
Furmark crash on results submit probably not overclock problem.
 
After WHEA adjustment above, Furmark crashes with access violations after 4-5 passes and submits.
4.5Ghz still not stable or memory overclock problem?
Vcore raise to 1.20V; still crashes.
BIOS defaults (stock); still crashes.
Stock confirm saved time adjusting Vcore or memory clock further.
 
More info at Furmark forum:
http://www.geeks3d.com/fo...9.msg6976.html#msg6976