Default voltage for Q6600 G0?

Idontcare

Elite Member
Oct 10, 1999
21,110
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Yep what Larry said. Use Coretemp to find out the VID...which is the Vcore that your BIOS is suppose to set your chip's Vcc to.

CPU-z is telling you what it is currently (at that moment) running at...which will be different from the VID because of standard circuit related losses (resistance, Vdroop, Vdrop, etc) as well the voltage regulation hardware calibration inaccuracy (Voffset).

Some BIOS like to monkey with this though, for the benefit of the consumer of course. Gigabyte mobo's are notorious for intentionally overvolting (but not dangerously or recklessly so) the CPU's when the BIOS option for Vcore is left to the default value of AUTO.
 

BonzaiDuck

Lifer
Jun 30, 2004
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I have no solid empirical evidence, just an "event" that raised the speculation in my mind.

For instance, I was surprised the the mobo automatically adjusted my NB/MCH voltage when I configured two graphics cards in SLI. And I note that Graysky made a remark in his sticky-Guide about boards auto-setting these voltages excessively.

It may be fine for a little extra voltage within the CPU's spec for "auto" Vcore, but I'm wondering if there isn't the possibility for things to get "out of whack."
 

clarkey01

Diamond Member
Feb 4, 2004
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anyone know what the default is ? I went from a P5B to a P5Q and I think the voltage has increased?
 

BlueAcolyte

Platinum Member
Nov 19, 2007
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I've heard it varies depending on how your chip was binned. For example, I think your Q6600 runs at 1.325V by default because that is the same as my E4500 (Vdroop and all!)
 

Idontcare

Elite Member
Oct 10, 1999
21,110
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Originally posted by: BonzaiDuck
I have no solid empirical evidence, just an "event" that raised the speculation in my mind.

For instance, I was surprised the the mobo automatically adjusted my NB/MCH voltage when I configured two graphics cards in SLI. And I note that Graysky made a remark in his sticky-Guide about boards auto-setting these voltages excessively.

It may be fine for a little extra voltage within the CPU's spec for "auto" Vcore, but I'm wondering if there isn't the possibility for things to get "out of whack."

My gigabyte DS3L's automatically adjust the Vcore upwards on my G0's as I raise the FSB and the Q6600 clockspeed. In my case it is actually quite a useful feature of the BIOS as it keeps the C1E/EIST voltage-reduction on idle power reduction feature intact.

As for whether this can hurt you in some cases the answer is yes. There were numerous reportings on this forum when the wolfdales initially came out and people were popping them into DS3L's to power the rig on so they could do the necessary BIOS flash to enable proper and full support of Wolfdales and until they got the BIOS fully updated the DS3L was pushing the VCore >1.5V.
 

BonzaiDuck

Lifer
Jun 30, 2004
16,632
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Now THAT's news to me. What I experienced instead was a seemingly blown-out MCH/Northbridge leaving no-post/no-response with our mutual "love-hate" relationships with the Striker Extreme 680i. Certainly, chipset cooling is important, but something put stress on that chipset after I created a 2xgfx SLI configuration, and I'd left NBcore set to Auto -- noticing that what had once been 1.25V in BIOS monitor was now 1.52V. And that, too, is strange, because I thought the danger threshold was something at or above 1.6V.

I need to stop feeding my forum and web addiction today and get busy packing up that mobo for RMA.
 

bryanW1995

Lifer
May 22, 2007
11,144
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Download coretemp AND realtemp. iirc they're both accurate on 65nm c2d's and c2q's, but I'm not certain of that. I have a q6600 rig that I put together for my mom a few months ago, but it's 150 miles away right now... I DO know that realtemp gave accurate vid numbers for my x3350 and q9450 and coretemp gave inaccurate numbers, however.
 

Drsignguy

Platinum Member
Mar 24, 2002
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Originally posted by: bryanW1995
Download coretemp AND realtemp. iirc they're both accurate on 65nm c2d's and c2q's, but I'm not certain of that. I have a q6600 rig that I put together for my mom a few months ago, but it's 150 miles away right now... I DO know that realtemp gave accurate vid numbers for my x3350 and q9450 and coretemp gave inaccurate numbers, however.


To add my 2cents worth, I had coretemp (earlier version) and realtemp with my Q9450 and realtemp seemed more accurate. But then I installed the latest version of both and they both read the same accross the board. ie: temps and VID. :)

Sorry OT here but:
Hope you are ok where you live Bryan! Been watching Ike hit in your state and the incredible video that is comming in is just amazing. Good luck.
 

clarkey01

Diamond Member
Feb 4, 2004
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Originally posted by: Drsignguy
Originally posted by: bryanW1995
Download coretemp AND realtemp. iirc they're both accurate on 65nm c2d's and c2q's, but I'm not certain of that. I have a q6600 rig that I put together for my mom a few months ago, but it's 150 miles away right now... I DO know that realtemp gave accurate vid numbers for my x3350 and q9450 and coretemp gave inaccurate numbers, however.


To add my 2cents worth, I had coretemp (earlier version) and realtemp with my Q9450 and realtemp seemed more accurate. But then I installed the latest version of both and they both read the same accross the board. ie: temps and VID. :)

Sorry OT here but:
Hope you are ok where you live Bryan! Been watching Ike hit in your state and the incredible video that is comming in is just amazing. Good luck.

Thats because realtemp is for 45nm CPU's