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Max V Core for a QX9650? - Page 3

post #21 of 24
Quote:
Originally Posted by gurusan View Post
ahh i wish this 1.3625 bs would just die. using 1.4V is not going to "drastically" shorten the life of the CPU. ffs.
Agreed. It's a quasi-myth. 1.3625v is the higher-end of the VID's intel put out--not the max voltage a 45nm CPU can run at and not sustain any damage for it's effective usable lifetime. I mean, I believe 1.35v was the max VID AMD put on most of their 90nm X2 CPU's--does that mean you can't operate it over 1.35v? No. did you toast it if you did? No.

There was a nice bit about this in the core i7 thread around here--can't remember the exact page though. And IIRC, the cause of Wolfdale CPU's getting fried was not due to over vcore--it was due to too much FSB terminal voltage.

That being said, if you get a decent overclocker, it's unlikely you'll NEED to go beyond 1.36/1.4v--likely the OC is FSB limited rather than vcore limited.
    
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post #22 of 24
FSB and VTT are definitely what you want to watch out for.

Especially if you bought a GA-EP45-UD3P or similar board like a bunch of other people around here did. If you leave these on Auto then it will severely overvolt them. I caught PLL at 1.8V and VTT at 1.6V on my board and apparently it was that way for a couple of weeks. Fortunately my CPU still lives, but it doesn't seem to want to go to 4.25GHz anymore. Obviously I fixed that.

As for 45nm Vcore, read your datasheet.
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post #23 of 24
I had an E8600 at 1.41 24/7 for a few months. My friend has it now and has no problems, he's running it at 1.4. This Q9550 is running at 1.35, but it's an E0 and probably quite lucky with it, although I've seen people running at 4.1 with only 1.25 vcore :O
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post #24 of 24
Quote:
Originally Posted by gurusan View Post
Are you positive it was degraded....? I have ran my wolfdales at insane voltages and never encountered any sign of degradation.

Even put 1.75V through one of my old C0 e8400s, still running happily 24/7 at 4.3ghz 1.4V since day 1
I am positive.

At the start of the week it was 24 hours Prime stable at 4.1GHz. At the end of the week it was not 15 minutes prime stable at 3.8GHz. All components, settings, tests, and environmental conditions were identical.

Some chips are more fragile than others.
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