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CPU Voltages

916 Views 18 Replies 6 Participants Last post by  FairDoos
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Ok, So ive had a go at OC'ing my CPU got quite fare and its stable


I have yet to play around with the voltage and was wondering on any tips before i should do it?

Like..

How much to raise it buy?
How much is to much?
etc

Thanks in advance
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raise Vcore to 1.5

set CPU frequency to 3.8GHZ

Raise NB frequency to 2400 GHZ

Heres a good guide on OCing phenom IIs

http://www.ocforums.com/showthread.php?t=596023

I think You can get that thing to about 4.0 stable with proper cooling
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Arr thanks for the reply


And thats what im aiming for! I currently have a Tuniq 120 but im swapping it soon for a megahalem


+1 Rep for giving me geat advice!
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Quote:

Originally Posted by FairDoos View Post
Arr thanks for the reply


And thats what im aiming for! I currently have a Tuniq 120 but im swapping it soon for a megahalem


+1 Rep for giving me geat advice!
oooh that megahalem sounds down right nasty
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Originally Posted by youra6 View Post
oooh that megahalem sounds down right nasty
Haha may i ask how you mean nasty? xD
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A good rule of thumb is no more than 0.2V above the stock value if on air, 0.3V (maybe even 0.4V if you're brave) above stock if on water. The lower the better of course, and you should aim at achieving the highest frequency with the lowest possible voltages.
Quote:


Originally Posted by Melcar
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A good rule of thumb is no more than 0.2V above the stock value if on air, 0.3V (maybe even 0.4V if you're brave) above stock if on water. The lower the better of course, and you should aim at achieving the highest frequency with the lowest possible voltages.

Mhmmm

If you can safely cool everything then going up to 1.6V for your gaming/benching use isn't that dangerous

Thats just to say if your CPU out right sucks and you have to use that kind of voltage....you should have a decent clocking 955 there so under the 1.55v range for a nice overclock is within grasp
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Originally Posted by Rewindlabs
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Mhmmm

If you can safely cool everything then going up to 1.6V for your gaming/benching use isn't that dangerous

Thats just to say if your CPU out right sucks and you have to use that kind of voltage....you should have a decent clocking 955 there so under the 1.55v range for a nice overclock is within grasp

cool temps does not make it ok to go 1.6V for daily usage. thats the kind of voltages that can affect the lifespan of the CPU
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Originally Posted by youra6
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cool temps does not make it ok to go 1.6V for daily usage. thats the kind of voltages that can affect the lifespan of the CPU

Not enough to really worry about though....if you run 1.6V only when you need it and don't idle the CPU at 1.6V for daily usage then the hit on its life span is going to be minimal at best
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can your computer run @ 3.8 with lower voltages? if it can why not lower it a smudge?
Quote:


Originally Posted by youra6
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can your computer run @ 3.8 with lower voltages? if it can why not lower it a smudge?

Nope...45C at load isn't bothering me to badly either
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Originally Posted by youra6 View Post
cool temps does not make it ok to go 1.6V for daily usage. thats the kind of voltages that can affect the lifespan of the CPU
Understandable and Correct! But, if you think about it, what's the oporating life of a CPU at Stock volts and speed? Running higher volts like that will shorten the life span by what, Maybe 3-4 years... IF that. Most of us will be upgrading again in a couple to four years depending on what's offerred. Maybe sooner. Just a fact. IMO
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Quote:

Originally Posted by Mastiffman View Post
Understandable and Correct! But, if you think about it, what's the oporating life of a CPU at Stock volts and speed? Running higher volts like that will shorten the life span by what, Maybe 3-4 years... IF that. Most of us will be upgrading again in a couple to four years depending on what's offerred. Maybe sooner. Just a fact. IMO
Mhmmm as long as you understand the risk i thinks its worth it if it gives you a worthwhile overclock
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Tbh i got to 4GHz and it was using 1.52V on 'Auto' i did try and lover it manually but then it became unstable and i got quite alot of blue screens. The temps at 4GHz were 38C at its lowest, load was something like 48C.
Quote:


Originally Posted by FairDoos
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Tbh i got to 4GHz and it was using 1.52V on 'Auto' i did try and lover it manually but then it became unstable and i got quite alot of blue screens. The temps at 4GHz were 38C at its lowest, load was something like 48C.

That's a very fair voltage for the OC so stick with it if it is in fact stable

What kind of stability testing have you lined up?
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Quote:


Originally Posted by Rewindlabs
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That's a very fair voltage for the OC so stick with it if it is in fact stable

What kind of stability testing have you lined up?

It was actually stable on 1.52V i was thinking of raising it to 1.6V but im not going to. Im keeping it at 3.7GHz @ 1.35V as it seems to be best at that Temps wise and performance.

Thanks for the help guys!
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Quote:


Originally Posted by youra6
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cool temps does not make it ok to go 1.6V for daily usage. thats the kind of voltages that can affect the lifespan of the CPU


This is not true. These Phenom's will not degredate like chips in the past higher voltages as long as you have good cooling. Its the heat Youra. Mis info. I have ran all 4 of my Phenoms at high volts. My 9850 for 2 years with no problems with heavy usage(at least 12 hours per day on average). Keep load temps under 50 and you can easily run 1.6V. If it does reduce the lifespan at all, the average user would get many many years and probably upgrade way before the chip dies.

Youra your spreading this info with no background. This has been proven by many overclockers.

http://www.techreaction.net/2009/05/...ng-essentials/

Quote:


A common misconception is that these 45nm Phenom II's are using dangerous amounts of voltage for anything past 1.4Vcore. Comon people, these aren't 45nm Core 2's or Core i7 CPUs. AMD's 45nm process is completely different, and can maintain higher voltages without any traces of degradation.

Higher voltages are not recommended with air but with good watercooling you can easily go 1.6V.
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