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Old May 1, 2009, 09:41 AM
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Default Voltage Questions - i7 920

Running on my i7 920, Foxconn Bloodrage board and overclocking this thing seems to be easy as pie but, I have no idea if my voltages are safe.

I hit 3.99Ghz this morning(by mistake) with the following settings:

bclk - 190
multi - 21
vcore - 1.392(1.2575 in Bios)
vdimm - 1.66(1.65 in Bios)

My VTT/etc is all on auto so it keeps the proper differential from the vdimm, but is all this safe? Am I risking any degradation of my chip? Please advise.
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Old May 1, 2009, 09:55 AM
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you can always refer to this for a quick baseline :

Intel® Core? i7 Processor I7-920 - SLBCH

look at the VID voltage range. These are basically the voltage range at wich intel feels ok sending a stock I7 920 and giving it the normal warrenty.

I run mine at 1.392 (according to CPU-Z). What is up with the Bios vs windows voltage for your Mobo ?
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Old May 1, 2009, 09:59 AM
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My board has a feature that compensates for vdroop basically causing my voltage in Bios to be substantially lower.

I've read that the uncore is just as bad for killing a cpu, is there any way to check my current uncore voltage? I left it at default but I'd still like some peace of mind.
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Old May 1, 2009, 10:09 AM
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I use my Bios reading for the uncore, since my Windows vs Bios numbers dont differ really much.

Yes, to much uncore voltage can kill the CPU, specially when there is a big differential between Dimm voltage, uncore and v-core.

As a general rule of thumb, if you really want to be safe, try not to use more than 1.65V for the ram and keep the uncore at .5 V for the Ram at max. Wich you are currently doing, so I would not bother to much.

If you relly want to be safe, bring the OC back a bit and keep the voltage in intel guidelines. Altough I would not worry to much with your current settings.
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Old May 1, 2009, 10:17 AM
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Temps ok?
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Old May 1, 2009, 10:45 AM
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gpu stressed and going on 2 hours of P95 and we're looking at:

64/63/61/59

Fairly decent all things considered.
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Old May 1, 2009, 11:37 AM
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temps are ok, I would leave it like that, but in the end, you need to decide if you are confortable with it.

Now, you need to FOLD !
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