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Help with Loss of Overclocking Ability

post #1 of 9
Thread Starter 
First off, Hello overlock.net, this is my first post.

I am a first-time builder that put my rig together October 2011, Specs Below.

Also first time overclocking... Everything seemed fine until last week...

When I first built it, I got it to run stable and smooth at 4.8Ghz, although reading through and searching for my problem, I have determined that I probably didn't stability test it enough. The longest I remember doing was about 4 hours. It has ran without a hiccup at those speeds and good temperatures: ~35-38 Idle and ~68-72 Full stress test.

Some things to note at this point:
I had not updated BIOS or Chipset drivers
I had only stress tested for a maximum of 4 hours using Prime95
I left CPU voltage on auto, never noticed it above around 1.4 V

Last week, apart from my monthly dusting, I did some cable management, removing everything on the MB except the processor and cooler. After putting everything back together, I was made aware of the updates and downloaded the newest Chipset and BIOS drivers. I also downloaded the Asus AI Suite II utility. Using this for a few days after redoing my overclock settings to exactly what they were beforehand, I started noticing Vcore warnings of 1.5+ volts from the newly downloaded AI suite. Alarmed, I started tinkering with the power settings to lower the voltage, but I misunderstood the offset feature on my (crappy) P8z68-V LE and I fear I may have given it too much power at one point. (1.35 + .2 Offset). I quickly lowered this back after seeing the Vcore warning again. To be honest I can't remember exactly when it started happening, must have been shortly after, but I started getting lockups and BSODs.

Primarily, I get the "An interrupt was not received on a secondary processor within the allocated time interval" error.

Since this point, I have spent the last week tinkering with settings to find a stable OC point... The best I could do was using the auto-overclocking ability to get 3.7Ghz. Whenever I try manual above that, it craps on me.

I have no idea what happened, but I have a few suspicions:

Could I have overpowered it and fried it?

Could the AI Suite (TurboV EVO, EPU, etc) have been overlapping the BIOS settings, causing problems?

Could I have damaged something (ie. RAM) with Electro Static Discharge when I took it apart?

Just today I finally disabled the TurboV EVO and EPU modules of the AI Suite, and tonight I will be running a stress test at stock with no OC to test if the chip is fried.
I also saw something about Memtest86, but I do not have CD's and cannot get it to run off of my USB stick.

What else can I do?
Edited by Oskatilla - 5/10/12 at 1:16pm
post #2 of 9
If you have an ASUS P8Z68 and you've been running at 4.8GHz with vcore on Auto and no voltage monitoring, then you could have damaged your processor. Those boards do not set a proper voltage automatically.

My last board with wanted to deliver 1.55-1.65v for a 5GHz overclock on a 2500K, when all it needed was ~1.365v.

And, no I don't think AI Suite could have been applying settings that override BIOS. Not automatically anyway.
Edited by samwiches - 5/10/12 at 2:40pm
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post #3 of 9
Thread Starter 
Yeah, that is my main hunch...

Quite the noob mistake, but lesson learned now. doh.gif

Still going to test it tonight stock and take it from there.
Is it possible that it could be slightly damaged but still run ok at stock speeds?

If so, I guess I'll just bite the bullet until i can upgrade my MOBO and CPU at the same time.
post #4 of 9
Or maybe your board could be failing, or even PSU. If you've got parts to test with then you should figure it out before you buy anything you might not need.

I think you should certainly be able to run stock unless something is really hosed. My experience with damage/degradation is minimal but I ran a Barton (TBred) with 2.1v for almost three years before I noticed it couldn't maintain it's clocks anymore. All it needed was vcore put back to the original max of 1.85v (before volt mod lols) and -100Mhz, then it went for another year before I lost the whole machine in a car crash.
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post #5 of 9
What vcore for which cpu multiplier setting is failing? If your getting secondary coprocessor interrupt bsod's then you need more voltage. Edit also I doubt you damaged anything as I don't think auto voltage will give lethal amounts of voltage unless you express the need to travel to 1.9 volt land and then your rig would have turned itself off from temperature. You should clear the CMOS before starting to OC again.
Edited by Aesir - 5/10/12 at 4:36pm
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post #6 of 9
Thread Starter 
Multiplier was set to 48 for All Cores in the past, Vcore was on autopilot. Again... doh.gif

I found something rather troubling after some further testing just now.

The default Vcore is set to 1.2V, and I have no direct control over it except +/- Offset

When I add a Positive Offset of 0.15, I get the predicted voltage in BIOS, but what I find in CPU-Z is an increase of 0.2V every time, no matter the offset being on or off, LLC being on or off...

ie. Got it to boot with x45 Multiplier, 1.2V with +0.15V Offset. BIOS said 1.35V as predicted, CPU-Z said 1.55V....

Now here is the really messed up part. I suspected CPU-Z was wrong despite all the research saying that BIOS can be a bit off, so I set the offset to +0.2V, figuring it would actually be 1.4V not 1.6V. CPU-Z said 1.55V on IDLE, but when I popped on Prime95, it didn't crash on me at all, and CPU-Z Vcore went DOWN to 1.45V....

WHAT?!

Am I dealing with some really bad hardware/degredation?

Or am I missing something really big?
Edited by Oskatilla - 5/10/12 at 5:09pm
post #7 of 9
Thread Starter 
Quote:
Originally Posted by Aesir View Post

Edit also I doubt you damaged anything as I don't think auto voltage will give lethal amounts of voltage unless you express the need to travel to 1.9 volt land and then your rig would have turned itself off from temperature. You should clear the CMOS before starting to OC again.

Oh? Everything I have read says if you are going over 1.5V something isn't right.

Also, I have reset the CMOS, a few times actually... probably a little overzealous, just at wits end.

I think I'm going to go pick up another PSU soon and see what that does. I've been meaning to for some time, as it is probably the crappiest part of my PC. When I first assembled I did lots of power tests and research and I thought it was ok, maybe not...
post #8 of 9
It would be unlikely that the PSU is causing fluctuation in voltage like that. If it were making problems you would see the computer turn off or freeze a lot.

The motherboard delivers power to components. Maybe you could reflash BIOS and re-install Windows and drivers.
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post #9 of 9
Quote:
Originally Posted by Oskatilla View Post

Oh? Everything I have read says if you are going over 1.5V something isn't right.
Also, I have reset the CMOS, a few times actually... probably a little overzealous, just at wits end.
I think I'm going to go pick up another PSU soon and see what that does. I've been meaning to for some time, as it is probably the crappiest part of my PC. When I first assembled I did lots of power tests and research and I thought it was ok, maybe not...

Its not good to go over 1.5 but being there for a short time won't spell the end of the world. If you have a multimeter you can check how many volts the psu is putting out on the 12v and 3.3v rails. I just had to replace one that shorted out and melted the 8 pin plug and wasn't supplying enough watts or voltage anymore to run my system at load.

Also +.2 is alot you should try something more along the lines of +.050 or less for 4.8 GHz with LLC set to ultra/very high.
Edited by Aesir - 5/11/12 at 4:13am
MCP
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(13 items)
 
CPUMotherboardGraphicsRAM
Intel 2700K 5GHz ~1.475v Asus P8Z68 Deluxe Gen3 XFX 8800GT 512MB (4x4GB) Corsair Vengeance 1866 MHz 
Hard DriveOptical DriveCoolingOS
Samsung PM800 SSD, 2 WD Caviar Black's LG DVD Combo Apogee Xt Rev 1.0, 360 Rad + D5 Windows 7 Pro x64 
MonitorPowerCaseMouse
2 x 19" Gateway 1440x900 Corsair AX850 Coolermaster HAF-X Logitech G500 
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i7 720QM Proprietary GTX 260M 4 gb DDR3 1066 
Hard Drive
500 GB WD Caviar Black 
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Reply
MCP
(12 items)
 
Loki
(2 items)
 
Rinzler
(13 items)
 
CPUMotherboardGraphicsRAM
Intel 2700K 5GHz ~1.475v Asus P8Z68 Deluxe Gen3 XFX 8800GT 512MB (4x4GB) Corsair Vengeance 1866 MHz 
Hard DriveOptical DriveCoolingOS
Samsung PM800 SSD, 2 WD Caviar Black's LG DVD Combo Apogee Xt Rev 1.0, 360 Rad + D5 Windows 7 Pro x64 
MonitorPowerCaseMouse
2 x 19" Gateway 1440x900 Corsair AX850 Coolermaster HAF-X Logitech G500 
CPUGraphics
Intel i7-4558U Intel Iris 
CPUMotherboardGraphicsRAM
i7 720QM Proprietary GTX 260M 4 gb DDR3 1066 
Hard Drive
500 GB WD Caviar Black 
  hide details  
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