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martinchua
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Intel 975x BadAxe v3.04 vcore mod & bios unlocking martinchua Jul 4th, 06, 01:20 AM 2 links from elsewhere to this Post. Click to view. #1 (permalink)
Ok seeing that myself will be looking to mod this intel 975x badaxe mobo soon and news on the BadAxe in vR is very little. With potential owners of the badaxe around, I believe some if not many will be interested in the mod to unleash the full overclocking potential of this motherboard.

Currently only rev3.04 and above of the badaxe supports conroe. Bios option is locked unless of cause you are using an ES or EE chip. The following mod will allow users to be able to up their vcore from bios and unlock most/all of the options in bios.

Note: There is nothing terribly difficult about completing this mod but if you feel at all uncomfortable doing this I highly recommend that you have the actual changes done by someone better qualified or don't do this at all.

With credits to freecableguy from XtremeSystems.org & all of the modders who contributed to the information & allowing me to share them with the users here.

I will be sharing with you guys only the vcore & vdimm mod as I believe these 2 are the mods most sought after and will be sufficient.

Warning: modding your motherboard voids your warranty and I will not be held responsible for any damage to your motherboard due to negligence or whatsoever reasons. So try it at your own risk.

Before we start off..
BIOS required: Recommended to get the 0908 or 0807 bios. As always, its best to flash to the BIOS before you make any of the following hard changes to the board.

Vcore modification for unlocking of Bios options



Notice the 3-pin header called "BIOS CONFIG" used for flashing and maintenance mode. Now...notice the empty silk-screen locations (OC DEBUG) above that in the picture? Intel has purposefully not shown the through-holes in their pictures as they have been blacked out. (I have shown them with the yellow circles.)

Mod: Short together the holes shown. Use either conductive ink or solder. If you wish, install a header (aka jumper) and use an extra shorting bar from your included accessories to make this mod changable!

Vdimm modification to allow adjustment of vdimm to 2.8v

Currently BIOS only allows Vdimm adjustment of up to 2.2v and this mod is to allow users to be able to adjust the Vdimm up to 2.8v instead. This mod is slightly more complicated and requires more reading up for newbie modders (aka me) in order to do it properly.



Mod: Connect a 10K ohm potentiometer from Pin #1 of U6H1 (SC2612E) to GND. Set to maximum resistance before connecting. Lower resistance to raise volts. It is recommended that a separate 220ohm resistor be added to the VR in series to prevent grounding Pin #1. This allow for ~2.8V to your DDR2. Make sure you know what your memory can handle before you put excessive voltage to it!

Thats it, and you're done.

In case you guys can't find the 0908 BIOS, here it is!
to geng to slack to ORD
 
Last edited by martinchua; Jul 4th, 06 at 01:26 AM..
simplyadvanced
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simplyadvanced Jul 5th, 06, 02:49 PM #2 (permalink)
the stilt posted


 
raja Registered User
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raja Aug 7th, 06, 03:53 AM #3 (permalink)
Are there any Vmch mods??

regards
Raja
 
Shamino
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Shamino Aug 7th, 06, 10:37 AM #4 (permalink)


10k ohms VR between the 2 legs as seen been grabbed
or 10k ohms VR to any ground will work too
 
Gusporti Guest
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Gusporti Sep 4th, 06, 08:44 AM #5 (permalink)
10k VR to any ground at any of the 2 legs?

By the way, i want 1,9v on the mch, what resistor do i need in series with de vr to get it as maximum volt?
 
Last edited by Gusporti; Sep 4th, 06 at 08:54 AM..
eva2000 Registered User
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eva2000 Oct 18th, 06, 03:56 PM #6 (permalink)
Shamino... would this vMCH pencil mod work http://www.xtremesystems.org/forums/...d.php?t=117697 and where's the DMM read point for vMCH on badaxe rev304 ?

thanks
 
longsiew
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longsiew Oct 18th, 06, 05:02 PM #7 (permalink)
Quote:
Originally Posted by Shamino


10k ohms VR between the 2 legs as seen been grabbed
or 10k ohms VR to any ground will work too
shamino,

may i know what is the name of that white sword-shape thingy??? Can get it from SLT???

How do u make it 'stand' or u need to solder the edge to the tiny chip on mobo???
BOYCOTT SMRT BUS NUMBER 178 COZ IT ISH FOREVER LATE AND NO AIR CON
 
tensor
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donno
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tensor Oct 18th, 06, 06:53 PM #8 (permalink)
hint
http://www.elexp.com/clp_5243.htm

can be easly found in slt.
testing?
 
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