790i reference board volt mods (UNCONFIRMED mods) >> work in progress

[dinos22]

yeah i got an ES board
lol everyone take off that capacitor and you will have miracle boards

j/k

[Charles Wirth]

My ES has one cap, the retail has two. My ES board is burnt and flaky when overclocked.

[dinos22]

My ES board is burnt and flaky when overclocked.

what's that mean again heh

[antoine76]

I tested the vdroop mod on my XFX 790i :


works perfectly

[noobzed]

i have a capacitor where Dinos pic is showing just pads.



with that said, i don't get a reading there either. on the opposite sides of the caps i am getting my 12v reading from both, but nothing from the side closest to the socket.

shouldn't we just be measuring the R47 leads on the underside closest to the socket for vCORE?

two here, evga 790i

[dinos22]

I tested the vdroop mod on my XFX 790i :
http://images3.hiboox.com/images/1508/2d3d3pik.png

works perfectly

excellent
what value did you set in bios
also what resistance do you have between the two points now

[antoine76]

excellent
what value did you set in bios
also what resistance do you have between the two points now

I set 1.4v in bios and I use a 50K VR, but I think I have 2K-3K now. But if I turn the VR at the maximum I have the same results (VR~0ohms). I think a pencil mod is possible or solder the 2 points to get 0ohms

[dinos22]

so you could use a 10K right

for finer adjustments

can you try that

[antoine76]

so you could use a 10K right

for finer adjustments

can you try that

I don't have 10K VR

[dinos22]

I don't have 10K VR

doesn't matter
the important thing is that it works

[gmcg]

http://www.youtube.com/watch?v=wt4JTGHXjlk
P03- Revision2

Here:
http://www.overclock.net/intel-mothe...0i-thread.html

And thanks for the mod info, guys!

[Delirious.]

Would you recommend just soldering the two together? A pencil mod was suggested. I tried it with a #2B pencil and it did nothing.

[Delirious.]

Any updates on this?

[dinos22]

Any updates on this?

DO NOT SOLDER COMPONENTS EVER!!!

the idea is to change resistance value slightly
if you solder them you will kill the board unless you use a 50K VR and dial it down to required resistance

[Delirious.]

DO NOT SOLDER COMPONENTS EVER!!!

the idea is to change resistance value slightly
if you solder them you will kill the board unless you use a 50K VR and dial it down to required resistance

Thanks for the heads up. I was just wondering about it. It was mentioned before.

Are you using floppy wire to do this? Would you mind posting a few pictures of the exact area and the supplie2 needed. Thanks. I would like to try this.

What exactly did you come up with as the required resistance on the 50K variable. Are you just going by what OCCT reads as a flat line?

[dinos22]

http://www.xtremesystems.org/forums/...4&postcount=44

[3oh6]

needed to go cold so i did the vCORE tonight just in case. as it turns out, 100K is too much, 50K works great.

based on the first post i started off with trying 100K but didn't have a 100K ohm VR...so i made one:



soldered in place. perhaps just a touch too much extra solder to that joint but it still would pass class 3 IPC standard so it stays:



the menacing looking tower of power. this is the only real dis-advantage to using in-line VRs, an extra VR usually gets stacked somewhere:



and the full view of the whole mod. i simply buzzed out a ground and used the pad where a transistor was designed to sit but was vacant.



of course, there was no need for 100K so i simply took the top VR off and am just left with the two bottom VRs as i originally planned. with the 50K ohm VR at max, the circuit drops to 23K ohms and vCORE might have been raised 0.01v ~0.02v from before the mod. we all know that the board drops vCORE anyway so it was still 0.02v from what was set in the BIOS. all vCORE readings i speak of are simply the BIOS monitor reading as i still don't know a vCORE read point. someday i will have time to sit down and get all of that sorted but for now, i am ready to go cold...insulation time.

[dinos22]

sub zero

coool

i've updated first post to use 50K VR

also for those that don't really use these mods you should always set your vcore high in bios and just add small touches with VR itself

[RLM]

Just an alternative Vdimm read point. Set to 1.85v on mine reads 1.84v in bios, 1.85v in Windows. Didn't check load readings though.



RLM

[eternal_fantasy]

Anyone know the resistance of a small dollop of AS5? or have the equipment to test it?

[RLM]

This is pretty interesting. (Well in a geek kinda way)

http://www.aoaforums.com/forum/hardw...mod-guide.html

Here is the PDF for the ISL6327

http://www.intersil.com/data/fn/FN9276.pdf

So is this resistor connected to the FB pin?

RLM

[Delirious.]

Anyone know the resistance of a small dollop of AS5? or have the equipment to test it?

Interesting idea.

[Kabauterman]

Hey mates,

I need your help!

Yesterday I try to solder the VDroop mod but I got the worst case, I killed my board because I been not careful Enough and I desolder a SMD!!!

Please guys halp me to fix my board can someone tell me the resitance between the 2 market point?



Thanks a lot, I hope I can fix it

[dinos22]

have you tried soldering it back on?

[Kabauterman]

the solderplates are broken :-(