[[ CHARLIE ]] "Project Prescott ES"

Quote:

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Originally posted by Stylist
@ charlie

I figured out, that my ASUS P4C800-E will not boot above 1.6VCore.
It seems to be a kind of regulation by ASUS.

And my board are undervolting with the Prescott.

So i am never above 1.525VCore.

Together with the Voltage fluctuation "made by ASUS" (drop down up to 0.125VCore) I maxed out at approximately 3.6GHz with air cooling.

@ all

Some one else interested in getting a 3.0E ES?

Stylist

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Thought you were gonna sell it @ Ebay? ;)

The P4C800-E overvolts pretty heavy up to 1.60V. Then, strangely, from 1.625V, it starts to undervolt.
Here's how it's reading voltages (BIOS) :

1.525V : 1.536-1.552V
1.550V : 1.552-1.568V
1.575V : 1.568-1.584V
1.600V : 1.600-1.616V
1.625V : 1.55V
1.650V : 1.58V
1.675V : 1.600-1.616V
1.700V : 1.616-1.632V
1.725V : 1.648-1.664V
1.750V : 1.680-1.696V
1.775V : 1.712-1.728V
1.800V : 1.744V

BTW : Welcome to Xtreme. :toast:

Quote:

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Originally posted by Jupiler
Thought you were gonna sell it @ Ebay? ;)

The P4C800-E overvolts pretty heavy up to 1.60V. Then, strangely, from 1.625V, it starts to undervolt.
Here's how it's reading voltages (BIOS) :

1.525V : 1.536-1.552V
1.550V : 1.552-1.568V
1.575V : 1.568-1.584V
1.600V : 1.600-1.616V
1.625V : 1.55V
1.650V : 1.58V
1.675V : 1.600-1.616V
1.700V : 1.616-1.632V
1.725V : 1.648-1.664V
1.750V : 1.680-1.696V
1.775V : 1.712-1.728V
1.800V : 1.744V

BTW : Welcome to Xtreme. :toast:

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Are those Hardware Monitor reading or did you measure it with a DVM at the Mosfet or Vcore coil???

Quote:

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Originally posted by Stylist
Hi,

can you tell me the measure points (pictures).

Thanks in advance,

Stylist

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This is a typical Asus board not exact for location of Vcore coils but looking at the pic you'll understand what I am talking about. I use a SMD grabber with wire attached. You can cap it when not in use. This way you can check it anytime when you want to know what the Vcore is doing during any phase of operation....

Just clip the SMD feet around the base leg of that Vcore coil.

Ace :

that's what the BIOS reports. Didn't know where to read the real VCore.

The bios and windows Hardware Monitor is not accurate at all.

Well,
Now that I followed HIPRO5's Vdimm mod exactly as stated, I have rock solid Vdimm up to my PSU 3.35V...

Npw onto VTT and Vagp.

C

good, i think to do the vddr mod for my ic7 but with a 450 ohm fixed resistor... i've 3,3V line modded @ 3,6V... will I be able to archive 3,4Vdimm stable?