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Haswell Overclocking Guide [With Statistics] - Page 83

post #821 of 19540
The LLC you set in the BIOS only affects the CPU Input Voltage, but that doesn't mean the FIVR doesn't have some kind of LLC built in.

I've checked HWInfo (and CPU-Z 1.64.0) against the measurement test points on my motherboard, and they were all pretty much spot on (Vcore, Vrin, and DDR) so I'm pretty comfortable that HWInfo is reading the best thing it can. Is the actual voltage exactly what those programs and the multimeter says? Maybe not, but it's the best thing I have to go on and it's at least as accurate as the BIOS settings, which have been off by a little bit pretty much forever. But on my board the value for VID never changes, it is always what it set in the BIOS, while Vcore does change, so the differences may just be motherboard related.

But unless an Intel or motherboard engineer decides to weigh in, we're never going to know the full answer.

Edit: I couldn't find anything about the Vcore, but I did find this tidbit about C6 sleep that answers the 0V question:
Quote:
Individual threads of a core can enter the C6 state by initiating a P_LVL3 I/O read or an MWAIT(C6) instruction. Before entering core C6 state, the core will save its architectural state to a dedicated SRAM. Once complete, a core will have its voltage reduced to zero volts.
...
In package C6 state all cores have saved their architectural state and have had their core voltages reduced to zero volts.

Edited by Forceman - 8/18/13 at 3:19am
post #822 of 19540
Quote:
Originally Posted by EarlZ View Post

As for stress testing, a lot of users including me found that AIDA64,IBT,Prime95 is not a the best basis for absolute stability, some are getting BSOD's in gaming while passing all of those tests. I personally pass AIDA64 but fail at x.264 encoding unless I add more vcore.

So what do you recommend for stability testing then? IBT, AIDA64, Prime 95 and then just general used and see if your stable in gaming etc?

Reason I ask is as per my previous post I pass IBT no problems, I'm stable in an older version of Prime95(26.6) for 12 hrs, I'm stable in AIDA 64 for 6 hrs so far (still running) but I was only only able to get through about 4 hours of prime95 V27.9 before BSOD.

This is all at 1.22 Vcore, 45 Multi, RAM at 2400Mhz XMP setting. Everything else Auto/Default at this stage.

So what should I use as the benchmark to actually declare myself stable?

Opinion seems to have changed a bit since I overclocked on Sandybridge.

Thanks.
post #823 of 19540
A lot of people have trouble with x264 encoding (even on IBT stable systems) so you could try using Handbrake or something to re-encode a movie. That's what I've been doing. I've also used the chess program that Darkwizzle runs and it was about the same as x264 as far as voltage went.

And the 26.6 version of Prime doesn't use AVX, so it's not going to be nearly as hard to pass as 27.9 or the Aida FPU-only test.
post #824 of 19540
Quote:
Originally Posted by Forceman View Post

A lot of people have trouble with x264 encoding (even on IBT stable systems) so you could try using Handbrake or something to re-encode a movie. That's what I've been doing. I've also used the chess program that Darkwizzle runs and it was about the same as x264 as far as voltage went.

And the 26.6 version of Prime doesn't use AVX, so it's not going to be nearly as hard to pass as 27.9 or the Aida FPU-only test.

Thanks, I'll try handbrake too and see how that goes. Any particular settings I need to use? Never used Handbrake before.

So what's your process for stressing? I've been going IBT -> Prime -> AIDA (CPU/FPU/Cache/Memory). Do you recommend doing anything differently?

Do I even bother worrying about passing prime with AVX (i.e. V27.9)? All the Haswell overclock guides seem to recommend just using AIDA.
Edited by combatant3219 - 8/18/13 at 1:52am
post #825 of 19540
I just use the Regular Normal profile - select the file to encode, select a destination, select the Regular Normal profile, and hit Start.

I've been mostly doing IBT (Very High 10 passes) then a movie encode with Handbrake, then 30 minutes of Chess. Once I can pass all those I've never had a crash in games or other stuff. I haven't been using Prime because I don't want to wait around for hours while it runs.

IBT uses AVX, and the Aida FPU-only test uses either AVX or AVX2 - it says AVX2 on their website, but running it doesn't get as hot or need as many volts as running the Intel AVX2 Linpack for me. You can also use the cache only test on Aida to test your uncore - it found errors really quickly (like 5 minutes) for me.
Edited by Forceman - 8/18/13 at 2:06am
post #826 of 19540
The cache only test is like 5-10c higher than its full blown test.
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post #827 of 19540
Great, thanks for that. +Rep

Just encoded a movie with handbrake and had no issues. Now I'm running AIDA with just FPU selected. I can straight away see temps are a lot higher on this so it's obviously stressing the CPU more.

How long do you recommend running these stability tests?

I'm used to the old school 12-24 hours of prime.
post #828 of 19540
Thread Starter 
Quote:
Originally Posted by EarlZ View Post

The cache only test is like 5-10c higher than its full blown test.

It stresses a single part more than a full blown test.

 

I'll try running chess tonight with stock uncore to see if I bsod.

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post #829 of 19540
Thread Starter 

Bsoded at stock uncore, even gave it 1.25v at stock... Ram is still at 1600... still 9c error.

 

What now? :(

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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 
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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 
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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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post #830 of 19540
Quote:
Originally Posted by Darkwizzie View Post

Bsoded at stock uncore, even gave it 1.25v at stock... Ram is still at 1600... still 9c error.

What now? frown.gif
Crap. You only started getting this error right? Could it be that the OS is corrupted?
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