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Is it true about CPU wanting more voltage?

post #1 of 8
Thread Starter 
A friend of mine told me that, sometimes due to OC the CPU would require more voltage EVEN at stock speeds.

Is this true or false?
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post #2 of 8
Quote:
Originally Posted by farmdve View Post
A friend of mine told me that, sometimes due to OC the CPU would require more voltage EVEN at stock speeds.

Is this true or false?

doesnt make any sense............. how can the cpu be OCed and stock at the same time???
    
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post #3 of 8
Quote:
Originally Posted by leopold1985 View Post
doesnt make any sense............. how can the cpu be OCed and stock at the same time???
This.

But no, at stock speeds, the CPU will NEVER need more than stock voltage to be stable. If it DOES (which can happen after a period of time of being heavily overclocked), then its time to RMA or replace it.

Most of the time, at stock speeds, your CPU can handle LESS voltage and stay stable. My Athlon II x4 630 only takes 1.10v to be stable at stock 2.8GHz. Stock vcore is 1.35v .
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post #4 of 8
Thread Starter 
@pioneerisloud
Your first sentence contradicts your second sentence... I was asking if, due to OCing you decide to go back to stock, the CPU would require more voltage at it's stock speeds.
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post #5 of 8
There is talk about CPU degradation at high clock/voltage OCs.

So if you run a high OC then go back to stock you would need higher voltage than the chip would normally need at stock.
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post #6 of 8
Quote:
Originally Posted by pioneerisloud View Post
This.

But no, at stock speeds, the CPU will NEVER need more than stock voltage to be stable. If it DOES (which can happen after a period of time of being heavily overclocked), then its time to RMA or replace it.

Most of the time, at stock speeds, your CPU can handle LESS voltage and stay stable. My Athlon II x4 630 only takes 1.10v to be stable at stock 2.8GHz. Stock vcore is 1.35v .
I'd concur with this...

However one example I can think of is RAM and IMCs. Anything over say 1066mHz or 1333mHz DDR3 is usually considered overclocked by Intel/AMD. To get 2000mHz can require substantially more IMC voltage than lower clocked RAM...CPU is technically at stock, but erquires more voltage. Kind of a stretch given the wording in the OP but it can be problematic for Bloomfields especially.
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post #7 of 8
silicon degrades over time, nothing special. Overclocking just makes that process faster.
post #8 of 8
Quote:
Originally Posted by farmdve View Post
@pioneerisloud
Your first sentence contradicts your second sentence... I was asking if, due to OCing you decide to go back to stock, the CPU would require more voltage at it's stock speeds.
Over time, even at stock speeds a CPU is succeptable to electromigration.

The way I understand it (which is probably a simplistic view point) is that over time the flow of electrical current causes the circuits in a CPU to become increasingly out of alignment and requires a higher voltage of current to make the same connection. The higher the voltage you're running through the CPU the faster it happens... but we're talking about years(5-10) of use.
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