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Qwerty
Joined: 20 May 2005
Posts: 3141
Location: Germany
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 Posted: Mon May 16, 2011 2:36 pm Post subject: QX6800 default VCore settings |
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I've updated my computer recently - replaced the good old Q6600 by an QX6800.
Does somebody know QX6800's ( SLACP s-spec) default VCore at its stock frequency of 2.93 GHz? I mean the default voltage under full load and not the voltage range of safe operaiton from the Intel documentation.
First I let the motherboard decide, but the CPU got quite hot at the proposed 1.325 V. Through experimenting I was able to achieve Prime-95-stable operation at only 1.125 V. The power consuption of the whole system (full load) went down from 438 W to 359 W !
That's why I'm curious to know if the automatic VCore settings of the BIOS were completely wrong, or this particular chip has a really great undervoltage potential.
Thanks! |
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gshv
Joined: 01 Feb 2003
Posts: 7898
Location: Fairfax, VA USA
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| Posted: Mon May 16, 2011 3:21 pm Post subject: Re: QX6800 default VCore settings |
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| Qwerty wrote: | | Does somebody know QX6800's ( SLACP s-spec) default VCore at its stock frequency of 2.93 GHz? I mean the default voltage under full load and not the voltage range of safe operaiton from the Intel documentation. |
There is no default voltage, that applies to all SLACP processor. Each individual processor is programmed at the factory with its own VID value in the range 1.1 - 1.372.
| Quote: | | That's why I'm curious to know if the automatic VCore settings of the BIOS were completely wrong, or this particular chip has a really great undervoltage potential. |
I guess you were lucky that the chip can be underclocked that low.
Gennadiy |
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Marcin
Joined: 02 Jan 2005
Posts: 8519
Location: Poland
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| Posted: Tue May 17, 2011 12:03 am Post subject: |
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Run Orthos Prime on priority 10. My Pentium DualCore E2160 from 1,8 went to 3,37 stable and I'm playing Crysis 2 on hardcore details at free time  At 3,6 GHz Prime95 have not seen any problems but Orthos did.
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Visit ABC CPU - Virtual CPU Museum. |
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Qwerty
Joined: 20 May 2005
Posts: 3141
Location: Germany
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| Posted: Wed May 18, 2011 12:32 pm Post subject: |
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Thanks for the helpful information!
I must admit that I didn't know that each Core 2 Quad has its individual default VCore.
I'll run Orthos - let's see what comes out... |
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