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Lock up during Overclock

post #1 of 10
Thread Starter 
Got my E6600 up to 3ghz. While running prime95 the PC locked up. No BSOD or restart, windows just froze. Was running it at 334mhzx9 vcore was set to 1.39 but would range from 1.37 to 1.41 in HWmonitor. Core temps where both 51 and 52C in HWmonitor and Coretemp. I've never had Windows freeze during an overclock. Does anyone know what this could be a sign of? Do I need to raise another voltage? Ram was running at Stock speed with 1:1 divider. I am completely new to intel overclocking.

Also, in BIOS, my CPU temps read 40C. but in HWmonitor and Coretemp they read 21-22C idle. Which should I trust?
post #2 of 10
An error in Prime95 can cause it to simply report an error, or lockup prime95, or crash windows, or bluescreen, etc. They are all indicators of something being unstable. You would adjust volts, lower the overclock, etc, like normal, or just live with it being unstable.

And about the idle temps: I was reading a thread on here (I forgot where it was) that was talking about that. Basically, disregard the difference - at cooler temperatures, there is no accurate reading. As the temperature increases, all of the readings will become more accurate because of the way it is measured. But if you need to trust one or the other, go with CoreTemp. I'll see if I can find that thread that explains it better.

edit: this is the guide I was talking about
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Livingroom rig
(9 items)
 
Retro!
(16 items)
 
DIY Laptop
(7 items)
 
CPUMotherboardGraphicsRAM
i5-3570K @4.3GHz ASRock Z77 Extreme4-M Radeon HD 7970 GHz 2x4GB Corsair Vengeance 2133MHz 
Hard DriveOptical DriveOSPower
Intel 520 SSD 240GB Bluray / DVD combo Win 7 Home 64 Seasonic 550W modular 
Case
NZXT Vulcan 
CPUCPUMotherboardGraphics
Athlon 64 FX-55 Clawhammer Or Athlon 64 X2 4200+ Manchester Asus A8N32 - SLI ATI Radeon X850 XT PE 
GraphicsRAMHard DriveOptical Drive
Or MSI GeForce 210 4 x 1GB Corsair XMS 500MHz OCz Agility 2 LITE-ON DVD 
CoolingOSPowerCase
Antec Kuhler 920 Win 7 Home Premium OEM Antec High Current Pro NZXT Phantom 
CPUGraphicsRAMHard Drive
i5-3360M @2.8-3.5GHz nVidia GT 650M @1GHz 2x4GB G.Skill 1600MHz Crucial M4 SSD 128GB 
OSMonitorCase
Ubuntu 12.04 11.6in, 1366x768 Clevo W110ER 
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post #3 of 10
Try more vcore.
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post #4 of 10
Thread Starter 
Quote:
Originally Posted by mgrman View Post
Try more vcore.
I know cpuworld reports the voltage to be between 0.85 - 1.5v. But what is a safe "unsafe" limit. I say that because anything over 1.35 is "unsafe" in intels terms. But should I be able to go up to 1.5v without frying the chip? I'm not worried about long term, I just don't want to push it to 1.45v and fry it.
post #5 of 10
When I was overclocking my Q6600 the limit was around 1.5. As long as your temps stay good (which they do seem to be) I wouldn't worry about bumping it up a touch. You may also need to bump up the Northbridge volts one notch (although you should be able to hit 3.0 without too much of a problem).

As for the temp programs, core temp and real temp are good ones to use.

Here's a good overview for overclocking that CPU. http://forums.hexus.net/pc-hardware/...beginners.html
Edited by mgrman - 10/30/11 at 11:58pm
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post #6 of 10
Thread Starter 
Quote:
Originally Posted by mgrman View Post
When I was overclocking my Q6600 the limit was around 1.5. As long as your temps stay good (which they do seem to be) I wouldn't worry about bumping it up a touch. You may also need to bump up the Northbridge volts one notch (although you should be able to hit 3.0 without too much of a problem).

As for the temp programs, core temp and real temp are good ones to use.

Here's a good overview for overclocking that CPU. http://forums.hexus.net/pc-hardware/...beginners.html
Yeah, I already did bump the NB up one notch to I believe 1.27v and VTT to 1.23 from 1.20. Prime went for about an hour then crashed. So I bumped the vcore to 1.41. Temps are still holding at 52-53. Which is impressive, considering its a stock heatsink.

Overall my experience with intel has been good. I didnt have to raise vcore till 2.95ghz, and the temps are cray low. I will say however, the stock intel heatsink has the WORST retention bracket I've ever worked with...... AMD has them beat on that for sure.....

Thats the same walkthrough I've been reading lol. It is really good.
post #7 of 10
I never have used a stock CPU heatsink. Those twisty knobs sure do look strange. It seems like they wouldn't hold tight at all.

What kind of test are you doing in prime? I remember when I had the Q6600 it was standard to use small FTT's to determine stability. For Sandy Bridge it seems that Blend is the standard. (Don't ask me why).
Sandy
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Sandy
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Hard DriveOptical DriveOSMonitor
WD Caviar Black 1 TB Lite-On Windows 7 Professional 64 bit Samsung T240 
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post #8 of 10
Thread Starter 
Quote:
Originally Posted by mgrman View Post
I never have used a stock CPU heatsink. Those twisty knobs sure do look strange. It seems like they wouldn't hold tight at all.

What kind of test are you doing in prime? I remember when I had the Q6600 it was standard to use small FTT's to determine stability. For Sandy Bridge it seems that Blend is the standard. (Don't ask me why).
Im doing Small FTT, just because I didn't think I would need to test the ram much, since its running at stock speeds. SO far its holding out(knock on wood).
Hopefully I can get it to 3.2ghz, but I might need to use my TRUE or buy a Hyper212 for that.
post #9 of 10
GL! I had the IP35 Pro too, decent motherboard, never gave me any problems!
Sandy
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Sandy
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CPUMotherboardGraphicsRAM
i5 2500K ASUS P8Z68-V Pro HIS IceQ 6970 8 GB GSkill Ripjaws X 
Hard DriveOptical DriveOSMonitor
WD Caviar Black 1 TB Lite-On Windows 7 Professional 64 bit Samsung T240 
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post #10 of 10
Thread Starter 
Quote:
Originally Posted by mgrman View Post
GL! I had the IP35 Pro too, decent motherboard, never gave me any problems!
Thanks! Yeah, its been a decent board so far. NB stays under 32C all the time. Only thing I had a kink with was the board wouldn't take my X1950xtx. So I had to wait for my friend to bring a 4770.
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