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Vcore VMod for Gigabyte G31M-ES2L

post #1 of 50
5/31/11 at 8:36am
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As title states. Need help finding one. Will post Voltage IC numbers if needed. Is this board:



G31M VReg IC Datasheet:
http://www.intersil.com/data/fn/fn9289.pdf

(ISL6312)
Edited by MR KROGOTH - 5/31/11 at 10:36am
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post #2 of 50
5/31/11 at 10:22am
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Hey sorry to threadjack here, but I have the G31M-ES2L like you do and I also have a pentium D 945 sitting around doing nothing and I was wondering if it is any good for overclocking?

What kind of SuperPi 1m times do you get with your D?
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post #3 of 50
5/31/11 at 10:26am
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Quote:
Originally Posted by GerroffMe View Post
Hey sorry to threadjack here, but I have the G31M-ES2L like you do and I also have a pentium D 945 sitting around doing nothing and I was wondering if it is any good for overclocking?

What kind of SuperPi 1m times do you get with your D?
Well I boot at 4.6GHz with my 925.
One sec, let me do a 1M time at 3.2GHz. No problem, nobody is posting anyway, was waiting for some company. One thing though - The Pentium D's are 130w chips, my VRM's start to squeal once I start getting up there. I'm going to put some Fet Sinks on there soon.

Overall, decent board for overclocking. As soon as you get into the BIOS, hit CTRL + F1 to get more options for OC'ing.

EDIT: Found the IC datasheet.
http://www.intersil.com/data/fn/fn9289.pdf
Edited by MR KROGOTH - 5/31/11 at 10:36am
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post #4 of 50
5/31/11 at 10:37am
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Yeah been overclocking my E8400 E0 on this board for a while now but stuck at a wall around 4.5 with memory. That is cool might try my Pentium D in it then if it is worth it depending on what your SuperPi score is

You haven't had any Mosfets die yet though then? That is good news! Was thinking about getting some sinks for them but tbh nothing untoward has happened since I built the computer about 6 months ago and it has been running a 24/7 OC @ 4.2 Vcore of 1.44v, although with the cap squeal you mention XD
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post #5 of 50
5/31/11 at 10:38am
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Quote:
Originally Posted by GerroffMe View Post
Yeah been overclocking my E8400 E0 on this board for a while now but stuck at a wall around 4.5 with memory. That is cool might try my Pentium D in it then if it is worth it depending on what your SuperPi score is

You haven't had any Mosfets die yet though then? That is good news! Was thinking about getting some sinks for them but tbh nothing untoward has happened since I built the computer about 6 months ago and it has been running a 24/7 OC @ 4.2 Vcore of 1.44v, although with the cap squeal you mention XD
Nope. Seems like a stable board. Im doing the 1M times now.
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post #6 of 50
5/31/11 at 10:42am
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pin#14 = FB for vcore mod

..it looks like its going to trace out to one of the resistors just over the top of your first RAM slot.

1. tone from pin14 to the resistors in mentioned area.. looking for continuity.
2. once you locate what you think is the resistor-> verify that : 1x side connects to ground.. and 1x side connects to pin#14
3. measure its resistance level and note the stock value
4. pencil down resistance in small increments.. what you will be doing is "adding a +v offset to your BIOS voltage"..
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post #7 of 50
5/31/11 at 10:45am
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Quote:
Originally Posted by CL3P20 View Post
pin#14 = FB for vcore mod

..it looks like its going to trace out to one of the resistors just over the top of your first RAM slot.

1. tone from pin14 to the resistors in mentioned area.. looking for continuity.
2. once you locate what you think is the resistor-> verify that : 1x side connects to ground.. and 1x side connects to pin#14
3. measure its resistance level and note the stock value
4. pencil down resistance in small increments.. what you will be doing is "adding a +v offset to your BIOS voltage"..
Awesome.
What about VFSB?

Here's my 1M times, the CPU-z says 2.whatever because of speedstep. Its really 3.21GHz.


Edited by MR KROGOTH - 5/31/11 at 10:49am
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post #8 of 50
5/31/11 at 11:00am
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I dont see any other control IC's near the NB/socket area.. FSBv must be tied to something else, or rectified/transformed up from another voltage source. Is it even selectable in the BIOS?

*I do see what looks like vdimm and SB/PCI-Ev though..
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post #9 of 50
5/31/11 at 11:02am
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Quote:
Originally Posted by CL3P20 View Post
I dont see any other control IC's near the NB/socket area.. FSBv must be tied to something else, or rectified/transformed up from another voltage source. Is it even selectable in the BIOS?

*I do see what looks like vdimm and SB/PCI-Ev though..
I can change the VFSB, yes. But its not an option like [1.3v], but more like [+.1v] or [-.15v]. The VDimm is the same way. I have no option in the BIOS to change the NB/MCH voltage.

EDIT: Perhaps the IC that controls VFSb is the one near the printer parallel port?
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post #10 of 50
5/31/11 at 11:05am
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Cheers for the info on SuperPi times, very much appreciated!

+rep!
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