It vdroop / vdrop mod for Gigabyte GA-EP45-DS3R?

I have a Gigabyte GA-EP45-DS3R, the vdroop / vdrop is very large, in set bios vcore 1.59375v

idle is 1,508 ~ 1.524v
Full is 1.4720 ~ 1.4400v

:shocked:

Take a detailed pic (macro) of the highlighted area and I'll make you a vDroop mod.

Attachment 84124

ISL6336, from this layout, FB is #16, Vdiff is #17
give a resistor between this 2 pin, you can fix loadline calibration

prepare a 5kohm vr, connect to Pin#16 & Pin#17
using meter to measure it , oringinal should be 45.5k
turn it to 1.5~1.8k, depend on what loading.

sorry don't have camera right now
and my meter is dead.

later i will post it.

Hicookie

when I am without a camera, tomorrow will take the photo
is that the pencilmod to do?

Thanks,

I've a large vdroop too (0.6)
waiting for the picture !

ihatbs,
You must have meant 0.06v droop as 0.6v would mean the mobo is faulty.

Sorry for the picture, is mobile, later made a better

http://img216.imageshack.us/img216/9...1250ia3.th.jpg

Quote:

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Originally Posted by largon

ihatbs,
You must have meant 0.06v droop as 0.6v would mean the mobo is faulty.

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Sorry my mistake it's around (0.06v), you are right :)

Waiting for this one since i'm going to get that mobo too. I've read around the net and i was aware it has a bit of vdroop.

I borrowed my friend's camera and took the picture.

I Felt lazy removing the heatsink and couldn't do better than this one.

http://img411.imageshack.us/img411/8641/dsc01233zv3.jpg

Hope it's good enough :up:


EDIT: btw, this is from my EP45-DS3 not the DS3R version but they are both the same except that the southbridge is different.

the motherboard restarted, and now it's more boot
it turns on or off, On-Off

I tried clear-cmos, remove the battery, exchange CPU, VGA, but nothing happens.

is calling and off, and does not emit any beep

help me :(

I too got a bad vdroop can't wait for a mod on this one as it will be first mod I ever had to make but the vdroop is just too bad :(

Now i'm a bit discouraged on this board, really. I hope largon can give us the fix.

Quote:

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Originally Posted by labs23

Now i'm a bit discouraged on this board, really. I hope largon can give us the fix.

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Oh don't do that! So far this board is great! The tech support that you get from the site from LSD is not only the best but all that he says is useful information. He takes the time to help EVERYONE :up:

I'm sticking with the board :)

Yeah, i know, just can't help thinking that Gigabyte's DS3R series had a noticeable vdroop, specially the first revisions, same for the previous P35 board, quite a vdroop on it. Hell yeah, largon's a master when it comes to voltmodding.

I made a quick mock-up of Hicookie's written guide.
Pins 16 & 17 are marked with red dots but since the pic isn't detailed enough I can't pin point the best soldering points. The legs of ISL6336 might not be too easy to solder on, you'll have to follow the trace that leaves from each pin and find a usable soldering point. Or, you can post a detailed macro pic of the area so I can find & mark actual soldering points.
Attachment 84414

Quote:

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Originally Posted by hicookie

prepare a 5kohm vr, connect to Pin#16 & Pin#17
using meter to measure it , oringinal should be 45.5k
turn it to 1.5~1.8k, depend on what loading.

Hicookie

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Thanks.

Quote:

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Originally Posted by largon

I made a quick mock-up of Hicookie's written guide.
Pins 16 & 17 are marked with red dots but since the pic isn't detailed enough I can't pin point the best soldering points. The legs of ISL6336 might not be too easy to solder on, you'll have to follow the trace that leaves from each pin and find a usable soldering point. Or, you can post a detailed macro pic of the area so I can find & mark actual soldering points.
Attachment 84414

Thanks.

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Okay now I'm lost I'm guessing this isn't a pencil mod but we must attach the two pins together?

It's a "hard mod", not pencil. For a pencil mod I'd need atleast a macro pic of the area.

Where i can get that macro pic?

sorry forgot this thread, thanks for shauntx's mention
i take my board back , and done the vmod, you can try pencil or just change the vr.

http://pic.xfastest.com/hicookie/Gig...roopingmod.jpg

On which do I do the pencil mod? the one that says Vcore reading?

Please tell me for pencil mod if the yellow line in picture is the one that I apply the Pencil mod to?

http://i257.photobucket.com/albums/h...Untitled-3.jpg

Also if I want to do the solder mod what size resistor should I use?

The circled part would be the resistor to pencil.
But it seems the effectiveness of the pencil mod will be non-existant due to the resistance of the part (it's lower than Hicookie reported earlier). One simply can't get from 3.6kΩ down to 146Ω by pencilling. Soldered mod seems like the only way.

Okay that sounds about right and I was looking at some other mobo that have had solder mods done however and I think this might be last question k I'm sorry for all of them.

When soldering do I attach 1 10k resistor to each of the points in the picture? and also do I need to ground this solder resistor? Anyone with a picture would be helpful so I know exactly what I'm doing :yepp:

One single resistor is needed, the principle is the same as for the pencil mod which is you "override" the surface mount resistor with another resistor (doesn't matter whether VR or pencil). You could solder on both ends of the surface mount resistor but I would recommend you find easier 'n' safer soldering points as the tiny resistor can get damaged by heat during soldering. 10kΩ VR could be unconveniently high rated, 1kΩ would work better.

so use a 1k resistor? I because I have a 10k. Also for the watts to use do I get the 1k resistor with 1/4 watts? also I see they have a 10k-Ohm 15 turn that I can adjust to the same as a 1k is that okay as well its a cermet potentiometer and I can adjust that one and looks easy to use.

You can use a 10kΩ VR too, but as I said, it'll be annoying to tune.

Quote:

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Originally Posted by largon

You can use a 10kΩ VR too, but as I said, it'll be annoying to tune.

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Okay thanks largon you have been alot of help and like I said if this thread had a donation section I would love to donate to those that help others its really appreciated guys. Below is the 1kΩ I'm going to use:

http://i257.photobucket.com/albums/h...tx/auto1k2.jpg

okay MOD DONE!!! thanks to everyone that helpout!!! Did mod and believe it or not my idle and load volages improved!!! I was expecting to order another board from FRYs before 9 pm to have shiped overnight because I thought something would go wrong but plugged in power and set bios vcore voltage and BAM! It worked! With the help of you guys and LSD from gigabyte forum you guys deserve alot of credit! I thought for sure I would screw something up but NOPE followed you guys advice and took my time and got what I needed! Thanks everyone for helping out and taking the time to answer some of my stupid questions.

Kindly post some after-mod pics of your board. Would be very thankful. Perhaps a macro is a plus:clap:.

Lol I can't solder that small, guess I'll have to live with my massiv vdrop. Its 24/7 stable at 3.8Ghz what more to ask for a 9550?

I'm gonna take my mobo to college and do the vmod.

Can i see some pics please ?

Did this mod help alot or?