Disabling pll overvoltage in asus bios

[Shoolie22]

Has anyone had any success in disabling pll overvoltage in the asus bios? I'm having a problem with an oc on my z68-v pro and as soon as I get it to post again I want to disable this right away as I think its the culprit to my problem (pc will not come out of sleep and monitor will not turn on).

This is what I posted in the cpu board if you want more details

Ok let me start off with my pc parts

CPU I5 2500K
MB ASUS|P8Z68-V PRO Z68
GPU Superclocked EVGA GTX580
RAM Corsair Vengeance 4Gx2 CMZ8GX3M2A1600C9B
Cooler Corsair H100
PSU CORSAIR 850HX 850W
HD 1T|WD 7K 64M SATAIII WD
MS WIN 7 HOME SP1 64BIT
Case 600T SE

Ok so the build went along fine the pc was working pretty well the only thing I had changed in the BIOS was I disabled the Marvel ports and something else that was interfering with a clean start up (PC would reboot like 3 times before loading windows but this fixed it). I was running a modest auto oc with the AI suite of 4.3ghz.

Then I decided to try out a manual oc of 4.5ghz, these are the changes I made in BIOS.

Ai Overclock Tuner - Manual
BCLK/PEG Frequency - 100
Turbo Ratio: 45
Memory Frequency - 1600mhz
CAS Latency - 9
RAS to CAS Delay - 9
RAS Pre Time - 9
RAS ACT Time - 24
DRAM Command Mode - 2 (the guide I used actually had this as 1T, but I don't really know what this does so I left it at 2. The only numbers I could find on my ram were the timings above)
Load-Line Calibration - Auto
CPU Voltage - Manual Mode
CPU Manual Voltage - 1.25v
DRAM Voltage - 1.5v
PLL Overvoltage - I left on auto, the guide advised to disable it but I could not see how. I could only increase the value or lower it all the way until it became auto.

Then I tested it out using Prime95 while checking CPU-Z, Coretemp, and Realtemp. Everything ran perfect for an hour at 4.5ghz, the core temps hovered around 55c and only one core reached 60c momentarily, I received no errors from Prime95. My idle temps were a solid 33c and with some heavy gaming sessions the temps stayed mid to low 40's. I was so happy all I needed was an Adriana Lima wallpaper to make my first build truly complete.

Then I was ready for bed and put my pc in sleep mode through the start menu, as I was heading towards my room the pc turned on by itself. I went to check what happened but nothing showed up on my monitor and my kb/m had no power! Not even the power or reset buttons on my case were responding, so I held the power button on the mobo until it shut off.

When I turned it back on the cpu led flashed once and the Dram Memok led stayed solid with nothing showing up on my monitor and only my mouse showing it had power (I could tell because it lights up). I held down the Memok button until the lights started flashing and the pc seemed to reboot, but still came back to the same thing with the Memok led staying solid and nothing else responding.

Can any one please help me out this is my first build and I can honestly say I'm totally lost in what to do next

 

[I.M.O.G.]

Disabling PLL overvoltage is no problem. Enabling it can help OC stability, but it doesn't guarantee it, and you can still OC without it.

Follow your mobo manual instructions for resetting bios via the cmos jumper, that will put all your settings back to default.

I don't think the PLL overvoltage has anything to do with your issue however. Sometimes if you push an OC too far, you just have to reset BIOS and redo your settings - usually it means you need to back off your settings a bit.

 

[dejo]

the only benefit to having it enabled is when you are oc'ing at the very limit of your hardware, or thats all that I have found anyway. my chip will run and sleep at 49x without it and will run at 51x with it but wont come out of sleep properly

 

[I.M.O.G.]

Thanks Dejo, I didn't know that. I don't do much sleeping on my rigs.

 

[EarthDog]

Interesting the association to PLL Override and sleep... (goes back to a prior thread IMOG)

Yeah to push past certain multipliers/clockspeeds you need PLL Override enabled. Each chip varies as to where that point is. Dejo seems to have a pretty high one though. Ive seen some as low as 45x to help out stability...