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Haswell Overclocking Guide [With Statistics] - Page 92

post #911 of 19539
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Quote:
Originally Posted by combatant3219 View Post

Best of luck getting that 9c issue sorted out.

Prime crapped out on me again after 15 hours with bsod 124 again but I'm getting there. I might just call that close enough and work on getting uncore at 42x stable, or do you think I'd be better off getting it prime 24hr stable first before working on uncore?

Personally I think 15 hours is fine.

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post #912 of 19539
I think very few people have done 15 hours, let alone 24.
post #913 of 19539
Thanks for the reassurance. I'll move on to uncore then so I know a have a nice stable 4.5Ghz overclock to fall back to if 4.6 or 4.7 is a no go.

You think at 4.5Ghz it's worth pushing uncore any higher than 42x or not really?
post #914 of 19539
Thread Starter 
Quote:
Originally Posted by combatant3219 View Post

Thanks for the reassurance. I'll move on to uncore then so I know a have a nice stable 4.5Ghz overclock to fall back to if 4.6 or 4.7 is a no go.

You think at 4.5Ghz it's worth pushing uncore any higher than 42x or not really?

Well, I'm happy having it at 4.1ghz. Sure, I can probably squeeze out to 4.2ghz or maybe 4.3ghz if I really wanna push it, but I don't want to push those uncore voltages. 

 

I've decreased voltage back down to 1.4v VID or 1.432 Vcore reading from HWinfo. I put the vccin to 2v just in case. I have not bsoded yet, it's been over a game. Funny, I crashed and never finished a single game at 1.44v. It's as if I am overvolting too much and that causes instability. Chess is a tougher stability stress for me than I thought.

 

Do I do video encoding? On occasion but I don't encode for an entire night straight, and I use OpenCL which offloads much of the work to the GPU instead.


Edited by Darkwizzie - 8/20/13 at 2:47am
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post #915 of 19539
Quote:
Originally Posted by combatant3219 View Post

Best of luck getting that 9c issue sorted out.

Prime crapped out on me again after 15 hours with bsod 124 again but I'm getting there. I might just call that close enough and work on getting uncore at 42x stable, or do you think I'd be better off getting it prime 24hr stable first before working on uncore?

Prime/IBT/AIDA64 has no bearing of stability what so ever, id recommend you test it with the things that you actually do on your PC. Like gaming and what not, I always use x.264 encoding for my testing because thats what i normally do on my PC and a lot of gaming. AIDA64 for example can pass 24hrs on my end at 1.210v but x.264 will fail after 8hrs unless I am at 1.240
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post #916 of 19539
Hi. New to OC. Could you please help me with my next few steps? Hardware in sig. I've gone with:
43x 100
CPU Core Voltage: 1.25V
Mem at 1600MHz

Running Prime95 Small FFTs and temps maxing out at 70degC which is ~8degC above the default setting and everything on Auto (3.9MHz).

That exact setup at 4400MHz would randomly crash when running Prime95 Small FFTs and using other programs.

Also, HWMonitor says VID is 1.252 but CPU-Z says Core Voltage swaps between 1.264 and 1.280 - is that normal? or did I forget some auto setting to be off?

Main question: What to tweak next?
Edited by tomxlr8 - 8/20/13 at 3:00am
post #917 of 19539
Quote:
Originally Posted by EarlZ View Post

Prime/IBT/AIDA64 has no bearing of stability what so ever, id recommend you test it with the things that you actually do on your PC. Like gaming and what not, I always use x.264 encoding for my testing because thats what i normally do on my PC and a lot of gaming. AIDA64 for example can pass 24hrs on my end at 1.210v but x.264 will fail after 8hrs unless I am at 1.240
Any idea why this could be? This has been kinda same since SB right? I remember my old Core i5 750 had no real world stability issues once I could pass 6hrs of Prime95 with el-cheapo geneic 1333MHz RAM overclocked to 1600MHz with same primary timings.
post #918 of 19539
Thread Starter 
Quote:
Originally Posted by tomxlr8 View Post

Hi. New to OC. Could you please help me with my next few steps? Hardware in sig. I've gone with:
44x 100
CPU Core Voltage: 1.25V
Mem at 1600MHz

Running Prime95 Small FFTs and temps maxing out at 70degC which is ~8degC above the default setting and everything on Auto (3.9MHz).

That exact setup at 4500MHz would randomly crash when running Prime95 Small FFTs and using other programs.

Also, HWMonitor says VID is 1.252 but CPU-Z says Core Voltage swaps between 1.264 and 1.280 - is that normal? or did I forget some auto setting to be off?

Main question: What to tweak next?

Did you get a Bsod code? I am assuming your uncore is set manually to stock so uncore can't be a reason for your crash. My guess would be a vcore problem... either it's getting too much or too little voltage. It's more common to have too little voltage rather than too much voltage and having that cause a crash.

 

We have noted some discrepencies when it comes to voltage with Haswell. For example: The VID measured by Hwinfo and Hwmonitor should be the voltage you input into the BIOS. But under load some sensors for "Vcore" seem to measure a voltage above what is set by you in the BIOS. We do know that avx workloads have been known to raise voltages and Prime95 has Avx instructions. However, some anecdotal evidence suggests this may occur with any heavy load although the increase in voltage is typically small.

 

For example, I have 1.4v set as VID but Hwinfo reports 1.432v under chess load. I don't think we have enough evidence either way to prove the CPU is indeed drawing more power than you set or the sensors are incorrect.

 

If you're randomly crashing using 'other programs', with 'other programs' meaning programs you plan to use in normal usage scenarios, then no, your CPU is not stable enough for you. Assuming you fix that, you can try overclocking the ram or the uncore. If you're crashing already doing normal tasks, even not while in Prime, you will probably crash once you overclock other settings and you won't know whether the vcore or the vring or the ram speed is causing the crash.

 

 

Quote:
Originally Posted by Anusha View Post


Any idea why this could be? This has been kinda same since SB right? I remember my old Core i5 750 had no real world stability issues once I could pass 6hrs of Prime95 with el-cheapo geneic 1333MHz RAM overclocked to 1600MHz with same primary timings.
 
Imo yes, these applications do have a bearing on stability. Maybe not end-all but it does help verify stability, it's worth more than nothing.
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post #919 of 19539
Quote:
Originally Posted by tomxlr8 View Post

Hi. New to OC. Could you please help me with my next few steps? Hardware in sig. I've gone with:
44x 100
CPU Core Voltage: 1.25V
Mem at 1600MHz

Running Prime95 Small FFTs and temps maxing out at 70degC which is ~8degC above the default setting and everything on Auto (3.9MHz).

That exact setup at 4500MHz would randomly crash when running Prime95 Small FFTs and using other programs.

Also, HWMonitor says VID is 1.252 but CPU-Z says Core Voltage swaps between 1.264 and 1.280 - is that normal? or did I forget some auto setting to be off?

Main question: What to tweak next?
I'd say you need to up Vcore. But since core is king, probably would drop the cache ratio to 35x and try 45x core. But Small FFT doesn't use L3 cache iirc so you won't see instability due to too high of s cache ratio.

The fluctuations are normal. It seems that with bigger loads, FIVR increases the Vcore slightly. My 1.280V is seen as 1.296V in CPU-Z.
post #920 of 19539
Thread Starter 
Quote:
Originally Posted by Anusha View Post




The fluctuations are normal. It seems that with bigger loads, FIVR increases the Vcore slightly. My 1.280V is seen as 1.296V in CPU-Z.

Meh, I wish we could accurately measure the voltage being pulled by CPU core without a shadow of a doubt, that way I can list everything I say in full confidence.

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CM Storm Trigger Brown Switches EVGA Supernova 1000w P2 Corsair 540 Air Razer Abyssus 
Mouse PadAudioAudioAudio
Steelseries QcK Mini Blue Yeti Microphone Objective Dac + Amp Sescom AB Switch 
AudioAudioAudioAudio
Krk Rokit 6 G2 x2 Radioshack Ground Loop Isolator (For Rokits) Wooaudio Aluminum Headphone Stand Sennheiser HD 800 
AudioOther
Logitech c920 Webcam NZXT Sentry Mix 2 Fan Controller 
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Undelwalt (2017)
(29 items)
 
 
Celapaleis (2013)
(16 items)
 
CPUMotherboardGraphicsRAM
7600k @ 5.197/1.392 1.392v z170 Asus Hero EVGA 1080ti SC Black (2100/6250) x2 8gb GSkill Trident Z 3600 @ 3804 15-15-15-32-2T 
Hard DriveHard DriveHard DriveCooling
Samsung 950 Pro 512gb (Undelwalt) WD Red 2tb (Pack Yak II) Seagate Expansion Drive 5tb (Phoenix Down II) 3x560mm HardwareLabs Nemesis GTX 
CoolingCoolingCoolingCooling
XPSC Raystorm Pro Watercool Heatkiller 1080ti Full Cover Waterblock EK XTOP Revo Dual D5 (Serial, PWM, v4) EK ZMT (1/2 - 3/4 ID OD) 
CoolingCoolingCoolingCooling
14xEK ACF (Compression Fittings) EK x4 250 (v2) Distilled Water + PT Nuke (Copper Sulphate) 24x140mm Silent Wings 3 
OSMonitorKeyboardPower
Windows 10 Pro 64bit Catleap 27 Inch 2560x1440 IPS 60hz Display Coolermaster Storm Trigger (Brown Switches) EVGA P2 1000w 
CaseMouseMouse PadAudio
Corsair Air 540 Logitech G Pro Tek Syndicate "Raze the World" Desk Mat O2 + Odac by Mayflower Electronics (Rev A) 
AudioAudioAudioAudio
Sennheiser HD 800 2xKrk Rokit 6 G2 Blue Yeti (Grey) Rode PSA-1 Arm 
Other
Aquaero 6 LT + Aluminum Heatsink 
CPUMotherboardGraphicsRAM
i5 6600k Delid @ 4.848/4.848 Asus z170 Hero MSI GTX 980ti @ 1499/4082 1.25v/134% Power 2 x 8gb Gskills Ripjaws V 3131 16-16-16-32 
Hard DriveHard DriveHard DriveHard Drive
Samsung Pro Series 840 256gb (Celapaleis) 1 TB Samsung Drive (Pack Yak) Samsung Pro Series 850 256gb (Celapaleis Reprise) Phoenix Down (External Backup) 
CoolingCoolingOSMonitor
Noctua D14 Kraken x61 Push-Pull for GPU Windows 10 Pro Catleap 2560x1440 @ 60hz 
KeyboardPowerCaseMouse
CM Storm Trigger Brown Switches EVGA Supernova 1000w P2 Corsair 540 Air Razer Abyssus 
Mouse PadAudioAudioAudio
Steelseries QcK Mini Blue Yeti Microphone Objective Dac + Amp Sescom AB Switch 
AudioAudioAudioAudio
Krk Rokit 6 G2 x2 Radioshack Ground Loop Isolator (For Rokits) Wooaudio Aluminum Headphone Stand Sennheiser HD 800 
AudioOther
Logitech c920 Webcam NZXT Sentry Mix 2 Fan Controller 
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