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Exceeding Intels VCore Value

skippo

skippo

skippo

Associate
Joined
3 Feb 2008
Posts
256
Location
Bristol
Hi,

I have a QX9650 and am wondering whether putting more volts than Intel allows will cause problem in the long run? Will degradation occur due to the higher voltage?

The max vcore Intel allow on my QX9650 is 1.25V.

Say I put 1.3V or even slightly higher, would there be problems in the long run?
Temperatures are fine btw so far, idle at around 33-34C, and max out with prime at around 60C.

Also, if people have a QX9650 and are OCing it, can you post your FSB, multi and Vcore please?

This would be great,
thanks
 
The degradation is still something of a myth. There's stories of it happening with over 1.45v (in Windows, not BIOS), but nothing has been proved. However most people are trying to keep below 1.4v just in case it proves to be correct.

I run my Q9450 at 3.76ghz (470x8) and 1.38v under load 24/7.
 
Cob said:
The degradation is still something of a myth. There's stories of it happening with over 1.45v (in Windows, not BIOS), but nothing has been proved. However most people are trying to keep below 1.4v just in case it proves to be correct.

I run my Q9450 at 3.76ghz (470x8) and 1.38v under load 24/7.
Click to expand...

interesting, thanks.

Therefore with my VCore pushing around the high 1.3x levels, i should be able to overclock to a pretty high value! Only things to worry about I guess are temperatures and electricity charges! :D
 
I would expect a QX9650 to do 4ghz on about 1.4v. And you'll have the advantage of an unlocked multi, so you won't have to run the high chipset voltages that those of us with locked multis are forced to.
 
never had any problems with running over rated volts that includes 2.1/2.2 on a amd chip at one point:D problems may occur over the very long run but by that time chances are you will have upgraded onto a few new chips!
 
Cob said:
I would expect a QX9650 to do 4ghz on about 1.4v. And you'll have the advantage of an unlocked multi, so you won't have to run the high chipset voltages that those of us with locked multis are forced to.
Click to expand...

Well I guess i could aim for a FSB of ~363 and multi of 11 giving the all important 4GHz.
Do you reckon I can acheive this 4GHz 24/7 on air. I have a Zalman Nvidia cooler - the one that costs around £50.

So would I just need to tweak VCore, NB voltage, Mem voltage / timings as I would be oc'ing my 1333 DDR3 modules too.

Thanks.
 
binaryknight said:
never had any problems with running over rated volts that includes 2.1/2.2 on a amd chip at one point:D problems may occur over the very long run but by that time chances are you will have upgraded onto a few new chips!
Click to expand...

The story goes that because these chips are based on a 45mn architecture, it's easier to kill them.

It kinda makes sense, but it may just be a scare story. But a lot of people aren't prepared to kill their chips just to find out if it is true.
 
skippo said:
Well I guess i could aim for a FSB of ~363 and multi of 11 giving the all important 4GHz.
Do you reckon I can acheive this 4GHz 24/7 on air. I have a Zalman Nvidia cooler - the one that costs around £50.

So would I just need to tweak VCore, NB voltage, Mem voltage / timings as I would be oc'ing my 1333 DDR3 modules too.

Thanks.
Click to expand...

The chips run pretty cool, so a high'ish clock on air should be possible. At only a 363mhz FSB you shouldn't really have to play with the chipset voltages. MCH and VTT/FSB *may* need a nudge, but every chip and every motherboard is different, so what works for one combination may not work for another.
 
EDC said:
1.4v max on any 45nm CPU, you can go higher but you're shortening the life of your CPU if you do.
Click to expand...

*sigh*

While true, you shorten the life of your CPU by using it, does than mean you shouldn't?

What voltage you want to push is proportional to the temperatures you get and the length of time you want to use the CPU.

If you're upgrading to Nehalem at the end of the year, you can push more than if you want this CPU to last for 10 years.

FSB VTT or Termination Voltage as it's sometimes called as well as the CPU PLL Voltage are both factors as well. You can very easily kill a 45nm, 65nm or any CPU by pushing too much on these. Max of 1.4v on the VTT and 1.7v on the PLL, although I push my CPU's hard, so you might want to be conservative yourself on these.

HTH :)
 
well at the moment I am running my cpu at 3.5GHz (333x10.5) with VCore set to 1.25V - everything else on AUTO. As my motherboard is a POS, it is reporting in BIOS that VCore is at 1.32V - huh!!!! Crazy - I don't know what to believe. But in any case 1.32 shouldn't be doing too much damage?
 
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