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Intel Haswell Overclocking Clubhouse.

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Processor Intel Core i9 7900X delidded @ 4.7Ghz 1.2v
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I increased my voltage to 1.272 so far so good thats with 2400mhz ram, 4.6ghz @ 1.228v is good wish my chip could do that, I still haven't touched my Vcssa haven't had need to does it help stabilize your memory? I leave my cache on auto which is 39x there no reason to overclock it it does nothing as its just the NB chip.


x264 on real branch will put your chip under more stress than a game will.


EDIT

Yep 1.272v with LLC 6 seems to be may stable setting for 4.6Ghz just played 7 matches of BF4 with no problems and temps where just hitting 60c with a ambient temp of 25c.
 
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I thought it stabilized my memory, but I looks like I need +0.010v in general if I want lower cpu volts at 4.7GHz.

Vcssa -auto and I need 1.287v or so i think, I didnt test anymore.



I'll just stick with this 4.7Ghz @1.280v, LLC6.. I can't use higher anyway H90 is to weak sadly -_-
 
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Processor Intel Core i9 7900X delidded @ 4.7Ghz 1.2v
Motherboard ASUS Rampage VI Extreme
Cooling EK-Supremacy EVO, EK-CoolStream PE 360, EK-CoolStream PE 240, EK-DDC Pump/X-RES 100
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I thought it stabilized my memory, but I looks like I need +0.010v in general if I want lower cpu volts at 4.7GHz.

Vcssa -auto and I need 1.287v or so i think, I didnt test anymore.



I'll just stick with this 4.7Ghz @1.280v, LLC6.. I can't use higher anyway H90 is to weak sadly -_-
The Vccsa AKA System Agent Voltage is ment to be on 0.8 when mines on auto its 0.808v some time jumps to 0.816v, What does yours report in AIDA64?
 
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Same as you, default 0.808 - 0.816v.
Btw cpu powersaving can lower this when in idle (so that 0.808v).


Im now at 4.6ghz @ 1.230v LLC5, Vcssa auto, no problem. I think I just stay with this as well, its a lot cooler in general.

Bf3 example
4.6@1.230v max cpu spike on hottest core 1 was 61C
4.7@1.280v max cpu spike on hottest core1 was 69C
 
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Is your chip been delidded those temps are a bit high for those voltages my chip sits @ 60c on BF4 on 1.272v .
 
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No its not delidded.


Well that Bf3 temp. was max max spike on hottest core - core1 (1hr gaming)., Im usually avg ~ 43-56C across all 4 cores.
 
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Processor Intel Core i9 7900X delidded @ 4.7Ghz 1.2v
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Here are my temps after 6 games of BF4 ambient temp was 26c, Even when the weather heats up and i'm getting ambient temps of 32c my temps should still be under 70c , before i delidded my chip i was get 75c @ 4.4ghz on 1.2v playing BF4, 75c for normal use would be my max if my chip went over it when doing normal tasks then i would drop it down a tad.
 
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This is what I get in LP2 -fixed benchmark, dx9 720p, noaa, jobthread=8 (default =4).
Cfg found @ C:\Users\username\Documents\capcom\LOST PLANET 2 Benchmark Version

[GAME]
MouseBaseSpeed=2.000000
[GRAPHICS]
HDR=FLOAT
AntiAlias=NONE
SLI=OFF
Stereo=OFF
TextureDetail=HIGHEST
TextureMipLimite=32
WireFrame=OFF
Direction=HIGH
PartsChain=ON
BloomFilter=ON
DOFFilter=ON
SwingGrass=ON
EnvMap=ON
FieldEffect=ON
Physics=HIGH
IKQuality=MIDDLE
ScrollLOD=HIGH
ObjectLOD=HIGH
EffectVolume=HIGH
EffectQuality=HIGHEST
MotionBlurQuality=NONE
ShadowQuality=NONE
Dx11Feature=MIDDLE
DX11 Shadow=ON
Tessellation=MEDIUM
ObjectTessellationFactorCoef=2.000000
SwingTessellationFactorCoef=2.000000
DX11 Soft Body Sim=ON
EnableWaveParticle=ON
[DISPLAY]
Resolution=1360x768
Aspect=DEFAULT
RefreshRate=60.00Hz
FullScreen=OFF
VSYNC=OFF
[SOUNDS]
SeVoiceNum=80
[CPU]
JobThread=8


Its also the worse scenario in gaming, @ 4.7Ghz its ~ 68-73C on core1, depends on the room temp.

yesterday evening


Today



And the worst case temps, for example in Geekbench3 or cinebench15 , @ 4.7ghz its more toasty, 70-74C on core1




I would delidd but im to scarred, I've seen a few videos but its just to risky.. Maybe in 1-2years xD
 
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Those temps look good none are over 70c the highest i read is 66c which if good :).

Dam you beat me on the single core bench :p. Yer delidding isn't for every one but it isn't hard to do not much harder than resetting your CPU with new thermal paste, Your TIM seems to be pretty good looking at your temps normally you would only delid if your temps are really bad like mine where @ 4.4Ghz on 1.2v :( .

 
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Its a Noctua NT-H1, but pre-applied ShinEtsu was a little better (2-4C).

Yes 4.6Ghz is great, I managed to tweak some more, I lowered Cpu power to 120% and raised H90 fans a bit to 85% (min 60% - max 85% by 70C) - I have some Akasa Viper 1600rpm (3.12 h2o/mm) and it took down 2-4C..

this is with nothing running in the background so its a little higher score :)


btw, its almost winter here so its even better then usual, room temp. ~19-20C.


I also tested 4.7Ghz again and yep it goes crazy, 1st core always the hottest ~69-74C, every minor bios voltage tweak affects it..
Looks like this H90 really can't handle over 1.26-1.27V..
 
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Processor Intel Core i9 7900X delidded @ 4.7Ghz 1.2v
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But your temps where all under 66c on the last screenshots you posted ? I use MX-4 have been for years :) .
 
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yes before I used 130% and a little lower fan curve.
I think both affected it.


Edit: ok I think I may have found something, there appears to be some internal auto bios setting that goes a bit weird and sets to a higher value and causes higher temps 5-7C, idk but a moment ago I had those temps above.
I went in bios to double check settings saved profile, exit, tested again I got higher temps (max spike core1 68C in geekbench).. I've reset bios to optimized defaults, re-applied those saved settings from before and its back to normal with (max spike core1 62C). heh weird stuff...

Guess if I tweak to much it goes berserk :laugh:
 
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Are you sure its not the LLC ? there isn't many settings that will increase temps.
 
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Are you sure its not the LLC ? there isn't many settings that will increase temps.
To be honest, idk anymore.

I used LLC6 in both cases.. I did tweak with cpu VRM in digi+ set to standard and back to optimized and this cpu current 120-130%,..



Although I saw a few possible suspects at auto, I would tweak them but I just dont know to what. Its mostly in AI Tuner CPU power management tab and cpu integrated VR related..
- power current slope
Allows you to set the gradient of the high-seed active phase current balance during load transients to eliminate current imbalance that can result from a load current oscillating near the switching frequency, Auto [LEVEL -4 to LEVEL 4]
-cpu integrated VR efficiency management @ Auto (balanced, high perf.)
allows you to improve power saving when the processor is in low power state,. Disable to make fully integrated VR work in high performance at all times
-power current offset @ Auto (100% to - 100%)
allows you to increase or decrease the output current sensed by the cpu. It finds the balance between optimal regulating while staying below the current treshold
-power fast ramp response, Auto (0.00 to 1.50)
Allows you to increase to enhance the response of the voltage regulator durring load transient

Idk, I hope Asus get this more under control in future bios., well earlier bios before 1504 or 1602 were more consistent, although they miss usb enhancements and they had a weird bios update (2-3 resets), now after v1504 only 1 reset.
 
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Odd i found using adaptive voltage some times can spike my temps higher than they normally go, As my CPU voltage some time hit 1.38v which is insane voltage for my H100i, I'm not sure how to stop the spiking on adaptive but they reckon voltage spikes only happen when stressing but can happen on normal usage like playing a game or rendering.


This was just running the Intel(R) Extreme Tuning Utility benchmark, Tomorrow ill leave hardware monitor running while playing BF4 so i can see the max load voltage you should do the same to see why your temps spike.

 
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Nah its not that, yeah adaptive voltage spikes in AVX apps Aida64, Prime95, IBT, Intel Bruning test, but not in games or Geekbench or Cinebench, rarely in x264 encoder..


Anyway I wont get to crazy about it, now I changed most stuff to manual in main AI tweaker menu and it seems to stick at lower temp., also blck is now at pinned 100.029mhz.
 
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post some screen shots up so i can see what you have changed mite help my temps to :) .
 
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now "normal" ~62-64C





I used LLC5 now and lower VRM balanced, but I also raised Vcssa to 0.002v just in case, because I saw it can help a little by lower cpuv. :)


I will have to test in Bf3 if its 100% stable, other cpu only intense stuff passes fine.

EDIT: It passed BF3, but I disabled VRM spread spectrum - default disabled, if enabled it can make VRM react to slow and reset pc.
 
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I have to overclock one of these things for someone else in a few days using a 4x4 samsung kit, 2400c9 stock. Do I have to do anything special for the ram or is all that stuff about Samsung issues only relevant for higher overclocks?
 

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I have to overclock one of these things for someone else in a few days using a 4x4 samsung kit, 2400c9 stock. Do I have to do anything special for the ram or is all that stuff about Samsung issues only relevant for higher overclocks?

It depends on the board, ASUS boards in particular. Secondary timings set by BIOS default are often not what is set in XMP/SPD, which is what actually causes the problem for some users. Some kits work fine, some do not, those that OC better tend to work without adjustment, while those kits that are borderline will need manual adjustments to secondary timings.


The thing that makes it not that big of a deal, to me, is that all these Asus boards with the problem do have SPD tools in BIOS so you can check what settings your kit needs without much fuss.
 
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Processor Intel Core i9 7900X delidded @ 4.7Ghz 1.2v
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Memory Corsair Vengeance RED LED 32GB(8GBx4) DDR4 3400MHz
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Benchmark Scores http://www.3dmark.com/fs/12778735
now "normal" ~62-64C





I used LLC5 now and lower VRM balanced, but I also raised Vcssa to 0.002v just in case, because I saw it can help a little by lower cpuv. :)


I will have to test in Bf3 if its 100% stable, other cpu only intense stuff passes fine.
Thanks man i may have to drop my overclock down to 4.4Ghz it depends if my new case can handle the temps seeing i can only use 2 fans instead of 4, I also set my CPU power phase to optimize and got a bsod so i put it back to auto, From all the videos i've watch about haswell overclocking all say they have problems using over 1866mhz ram settings with over 4.5Ghz, I don't get this problem just wish my chip could do 4.6Ghz @ 1.2v HAHA.


Nah its not that, yeah adaptive voltage spikes in AVX apps Aida64, Prime95, IBT, Intel Bruning test, but not in games or Geekbench or Cinebench, rarely in x264 encoder..

Nope it does spike in BF4 it mite only be for a few seconds i'm not sure all i know is it mite be why i see a jump in temps.

 
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Hm, maybe it happens only during loading? Does Bf3 act the same?

Well I never monitored voltage like that (when in fullscreen), only temps&cpu usage in msi afterburner OSD..
 
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I would say they would be the same, just run HWM in the back ground and find out :(.
 
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I did a quick monitoring test in BF3 with HWinfo64 and it didnt go over fixed voltage.. Same in Grid2 avx.exe. Could be Bf4 specific?


Anyhow I saw this post, :)
I had been having sporadic issues with my PC resuming from Sleep or Hibernate... basically it would fail to boot up after being asleep for over an hour. Anyway after a lot of trial and error, i found a setting to fix this and also greatly improve how my CPU overclocks!!

I disabled these 2 options in the BIOS:
* Disabled C7 C-State
* Disabled Asus Multicore Enhancement


The Asus Multicore Enhancement completely changes the way voltage is delivered to the CPU. I noticed immediately after disabling it my CPU was using less voltage. I unfortuantely had to retest my voltage settings after changing this as it uses different offset values.

But now I'm perfectly stable at 4.5Ghz @ 1.25v! I might try for 4.6Ghz if I can keep temps within limits.
http://forums.guru3d.com/showpost.php?p=4718747&postcount=34
Specifically Multicore enhancement part; he use to run 4.2Ghz @1.228v..

I goggled a bit and it should be disabled once you OC and use sync all cores
http://www.anandtech.com/show/6214/



What do you all think?
I tested @ 4.6ghz atm and I could lower cpuv to 1.223v instead of 1.230v and it passed everything..
I guess its better keep disabled or does Enabled somehow stabilize long term turbo boost?
 

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My question would be whether or not Multicore Enhancement should even be allowed to be enabled by default? I would assume it'd still just allow all cores to go to 3.9 or whatever the max turbo speed is versus the more limited stock Intel option...so it should have very little to do with OC's. But if it has some sort of effect then it's well worth disabling!

It would make sense that enabling it would bump the voltage up under load just to make sure all cores had enough to be stable at the max turbo clocks. I'll have to try this out and see what I get.


I'll have to research C7 C-State.

I have no issues coming out of sleep or anything...but my 4.5 @ 1.24 would be mighty nice at 1.23 or 1.22! One could only hope...now to hurry and get my final assignments done so I can tune my OC! :toast:

This simple change sounds important enough to test out...I bet it'd work with most OC supporting boards that have this feature. Asrock boards come to mind. But I would also assume this isn't news to a board MFG that's had R&D time...I would assume they'd auto-disable such a feature...but maybe not just to guarantee stability??? I dunno. This just seems a little too odd to work...but I'm gonna try it! Hopefully soon!

Might be one more good tweak for the OP. :toast: