Is 1.44v too much for 24/7 usage?

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EricVPI

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May 15, 2006
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Not under load, just having the computer on 24/7.

I've overclocked my computer and the autovoltage is around 1.44 (if I don't use auto it will crash prime95 within 5 hours).

Is this too much voltage? Will it significantly shorten my cpu lifespan or risk harming my mobo/cpu?

I'm using an e6850. 3.0@3.6.
 
well if you use autovoltage while overclocking you deserve to get your chip burnt 😛

just set it manually to the lowest stable voltage, autovoltage usually sets it unnecesseraly high...
 
What are your temps?

What motherboard are you using?

Did you try manually setting it to 1.44v?

If not I would do that and run Prime and if it's stable then gradually reduce the voltage one step at a time until it becomes unstable.

With increased voltage comes an increased chance of Electromigration http://en.wikipedia.org/wiki/Electromigration

You have a very good CPU and depending on which board your using and what BIOS it has you should be able to get it stable at a lower voltage than that.
 
p35 ds3r, award bios



temp is 64C under MAX load, prime95 smallfft. blend is about 58C.

i hate testing prime95 cuz it takes friggin hours to find the instability. the thing is, auto-voltage auto-regulates all voltage on my mobo, not just CPU. when I adjust fsb voltage it can affect stability, as well as all that other stupid voltage. fsb, mch, and ddr voltage confuse as to their necessity when oc'ing.

Manually, I've tried 1.4125 and prime95 crashes after about 5 hours. temps with 1.4125 are virtually identical to autovoltage temps at around 1.44. My board also has significant vdroop.
 
It should last for years but 1.44 is too high for 65nm processor. On the positive side unless you turned off speed step it will throttle way down when idle so it's likely not an issue. The reference voltage above is not the acceptable voltage for CPU like say ram voltage range.
 
1.44v is too high? People keep their systems clocked at 1.45-1.55v using conroes. From what I've read I should be able to get 3.6 @ 1.4 or 1.41. Not sure why I can't.

I don't know about speed step, I looked for it in the BIOS but I couldn't find it, unless it's called something else in gigabyte mobos. CPU-Z reports vcore for the cpu LOWER under load and HIGHER when idle..
 
I think it's C1E if I remember right. It downsteps the multiplier to 6 on my motherboard when there's no load. My E4300 runs at 3 Mhz (9 x 333), and when no load, multiplier goes to 6 and I'm running at 1998 Mhz, slightly above stock 1.8. My MB is p965-DS3 rev 2.
 


It's only a 10% overvolt, well within 'acceptable' limits. You see some people running 1.5V with high end air or water cooling, and I don't see many dead C2Ds? Hmm...
 
It's quite high (my opinion) for a 600mhz overclock.
You should try to reduce the voltage to stock (or around 1.25V) and work your way up until it's stable (saves a lot of time).
 
Try stock settings up to say 1.35V cpu.

If it's still unstable you could test with a very small fsb overvolt.

MCH shouldn't really need overvolting at 400MHz.
 
So set voltage to 1.35V and see the highest I can get running prime95 smallfft?

I couldn't imagine getting remotely close to 3.6ghz considering I would get errors a few hours in at 1.38.
 


Really the limit for air cooling is 1.5 Vcore. any higher than this and you processer won't last. If your using a high quality water cooling system then up to 1.6 Vcore is possible.
 
EricVPI, no CPU's are 100% identical. Every silicon semiconductor nano-circuit has slightly different basic properties of electronics such as resistance, capacitance, inductance, impedance, and transconductance, and there are nearly 292 million transistors in a C2D. Although two consecutive serial number CPU's from the same fabrication, with the same stepping may appear identical, they're yielded from different location on the silicon wafer from which they're manufactured, and like diamonds, each has it's own unique flaws.

Even though their dynamic operational characteristics may be very similar, no two CPU's will overclock to exactly the same stable maximum speed, at the same voltage, at the same temperatures. Additionally, in a dual core processor, one core will always become unstable before the other. Successful overclocking is achieved through small increments, and requires a methodical approach, and a great deal of time and patience. Regardless of effort, there are never any gaurantees; we can only say what is typical. There's no way to predict an overclock until you try it. That's just the luck of the overclocking draw.

Comp :sol:
 
If at 1.41V only crashes prime95 after 5 hours, I doubt it needs additional 0.03V to stabilize it. 1.42 would probably be enough
 
You're fine.

I know people with 1.5v+ on water 24/7.

If it's going to fail "early" it will still be after you upgrade.

Hell my Pentium 133 MHz is still running as a firewall on someones network.
 

While 1.44 volts isn't to much it will significantly shorten your CPU's lifespan. Most CPU's can last about 12 years if left to stock settings. At that voltage you could burn out your CPU in under 4 years. OCing no matter how little your trading higher clocks for lifespan. Upping the voltage from stock really cuts into your lifespan and should never be increased by more than 10%.
 
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