Overclocking Voltage Problem?

stock

stock

stock

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Hi there,

I recently started my first build (specs below) and i am in the process of attempting my first overclock.

As we speak the PC in question is Priming (blend) next to me and seems to be a fairly healthy 36c (25c idle) on both cores at 100% load 5 1/2 hrs into the test. Room temp is around 22c.

The problem i think i have is that when i change something in the BIOS ie lowering the strap or upping the FSB 20 MHz, when i save and exit the whole PC seems to shut down for a few seconds before bursting back into life and loading into Windows - this concerns me because if i boot into BIOS , have a look around, maybe even up the FSB 5MHz, after saving and exiting the PC doesn't perform the same 'hard' shut down as before but just reloads it's new settings without the whole motherboard shutting off - is this wrong, and if so why? I am wondering whether my voltages are set correctly, but don't mind admitting i know nothing about the subject.

Since i began this experiment i have run into another problem. When i shut the PC down i always switch off the PSU, as I'm sure most do, thing is when i boot the PC after this it will power on for a second (all lights and fans throughout the PC will ignite or spin up) but then shuts off for a few seconds before bursting into life (deja vu) and running as normal. If i shut down and leave the PSU switched on and then boot i don't suffer this, it just boots straight through too Windows. Anyone have any idea as to why this may be happening? Is it linked to the problem above?

Specs: Currently on the bench;

CPU: E8600 C2D - Vid 1.1750v - Q822A435
M/B: Asus Maximus Extreme Intel X38
Cooling: T/R True Black - 2* 'Antec 3' 120mm Fans Push/Pull - 1* 40x20mm fan zip tied between the heatpipes blowing on H/S. As5 paste.
RAM: 4GB (2*2) Corsair XMS3 DDR3 1333MHz 9-9-9-24/Dominator Fan. Slots A2/B2.
GPU: GeForce 285 GTX XLR8 - Stock.
PSU: Tagan Piperock 800w Modular
HDD: 2*WD Raptor 74GB
Sound: X-Fi Xtreme Gamer
Keyboard, Mouse, 22" Monitor, Fan Controller, 1*DVD-R/RW, Antec 1200, Ultimate 64 bit.

Below are my BIOS Settings and some testing/monitoring, i would appreciate it if anyone could point out where i am going wrong and give me a nudge in the right direction

Prime, Core Temp, Real Temp, CPU-Z
BIOS
BIOS
BIOS
BIOS
BIOS
BIOS
BIOS
BIOS

Thanks in advance for any replies and taking the time to read/look :)
 
I have a DFI x48, when making small adjustment to the FSB it will boot straight away, but bigger thinks like the multi or the V-core, then it shuts down before rebooting.
I think it's normal for some motherboards.

I'm not sure about your other prob, i never turn mine off at the wall/PSU, and very rarely shut it down, usually put it into 'sleep'.
It could be that it's starting with default settings, then rebooting with yours.
 
Katoom said:
I have a DFI x48, when making small adjustment to the FSB it will boot straight away, but bigger thinks like the multi or the V-core, then it shuts down before rebooting.
I think it's normal for some motherboards.

I'm not sure about your other prob, i never turn mine off at the wall/PSU, and very rarely shut it down, usually put it into 'sleep'.
It could be that it's starting with default settings, then rebooting with yours.
Click to expand...

Thanks for the reply Kat

It's just the way is does it that worries me, hit return and *snaps fingers* gone, then a couple seconds later 'whoosh' she's back. If yours is the same then it's normal or we both have the same problem ;). Glad you didn't mention the power supply as i began to wonder, but then i just sat and watched it do 6 hrs prime blend without missing a beat, so i have pretty much ruled that out.

With regard the other problem, it has only started doing it since i begun making the adjustments to my settings. Again, it may be nothing. One thing that has crossed my mind is that the M/B is discharging itself of any power when i turn the PSU switch off, and then when the PSU is switched back on it feeds that power back (don't they hold some juice on board?) then shuts off to avoid damaging any components before booting for real, just a thought...

Edit: Cheers Banny....
 
Yes exactly as you've described, straight off then re-start. My old Gigabyte board done it to, and would sometimes have a couple of goes at starting.

Looks like you have a good chip there, low volts with a good clock. Should be able to get that over 4ghz.

For a quick stability test, try Intel Burn Test. Watch your temps though.
 
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I have the same CPU and Mobo as you and I get the same and have done since I started clocking using it about a year ago.

The only problem I have at the moment is trying to get above 500fsb! Im sticking with my x10 multiplyer at the moment for ease but was hoping to run 8.5 x 540 but having no luck, it just falls over in windows before I can even think about priming!

Nice VID btw, wish I was as lucky :(
 
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Katoom said:
Yes exactly as you've described, straight off then re-start. My old Gigabyte board done it to, and would sometimes have a couple of goes at starting.

Looks like you have a good chip there, low volts with a good clock. Should be able to get that over 4ghz.

For a quick stability test, try Intel Burn Test. Watch your temps though.
Click to expand...

Is it strange for the VCore to have actually gone down?

At stock settings VCore was at 1.128v in BIOS, now i have upped the FSB to 370 it is showing 1.104v in BIOS and only 1.096v in CPU-Z :confused:

Which is the more accurate, BIOS or CPU-Z?

Should i look to up my VCore from the outset and then lower when i have the clock i want, or should i set it low and move up as i become unstable?

That IBT looks scary, what is a good amount of RAM to assign to the test for the low RAM test?
 
Hey stock,

welcome to OcUK forums! :)

The double boot thing you are experiencing is normal behaviour for a ASUS motherboard. It only does that if the bios has been configured manually and the board is disconnected from the mains.

If you leave the BIOS on default and unplug the system from the mains the board will boot normally first time, if you overclock the board and disconnect the power then you will always get a double boot, it's part of an ASUS feature that helps you recover from a bad overclock. In the old days you used to move a jumper to clear CMOS but that is very rare now as normally you just have to power down the board, leave it a few seconds and power up, the board loads some safe settings so you are able to re-enter BIOS and correct the mistake.
 
Big.Wayne said:
Hey stock,

welcome to OcUK forums! :)

The double boot thing you are experiencing is normal behaviour for a ASUS motherboard. It only does that if the bios has been configured manually and the board is disconnected from the mains.

If you leave the BIOS on default and unplug the system from the mains the board will boot normally first time, if you overclock the board and disconnect the power then you will always get a double boot, it's part of an ASUS feature that helps you recover from a bad overclock. In the old days you used to move a jumper to clear CMOS but that is very rare now as normally you just have to power down the board, leave it a few seconds and power up, the board loads some safe settings so you are able to re-enter BIOS and correct the mistake.
Click to expand...

Cheers Wayne, puts my mind at rest :cool:

c0dec said:
I have the same CPU and Mobo as you and I get the same and have done since I started clocking using it about a year ago.

The only problem I have at the moment is trying to get above 500fsb! Im sticking with my x10 multiplyer at the moment for ease but was hoping to run 8.5 x 540 but having no luck, it just falls over in windows before I can even think about priming!

Nice VID btw, wish I was as lucky :(
Click to expand...

Hiya mate,

What BIOS you using?

Maybe you could let me know some of your settings, i may be able to get a better idea of where i may be going wrong.

BTW 4.6 is a nice clock :thumbsup:
 
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Katoom said:
Personally I would do some quick runs with IBT then prime it. You could find instability in minuets rather than hours.
Click to expand...

1t5shd.jpg
[/IMG]

Gonna do some now *crosses fingers*
 
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Cheers

What should i do about the VCore, leave as is or raise it up and then lower when i get the clock i want?
 
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Keep pushing up the clock till it becomes unstable, then add some Vcore, test again. You will get to a point where your not comfortable with the high Vcore or temps.
Or.
Some people are getting 4.4 with 1.32v, you could try that then see how you go from there.
I'm not sure what the recommended max Vcore is for your chip though.
Good luck.
 
I haven't touched v so far, I'm beginning to wonder if something is wrong with the sensor or CPU-Z or the monitoring software on the Mobo, <1.1v at 4GHz? doesn't look right! but then i was on MSN last night with a fella from S.Africa, he saw the V.Core on my chip at 4GHz and offered me $400 US!! Reckons that it should be around 1.25v - 1.42v, wants me to post it so he can put it under LN2 - told him that i wanted to finish this clock first and that i would be in touch, should i?

Edit: I think the max VCore for these is around 1.36v
 
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