P5N-E vmods

[couppi]

All vmods can be found at VR-Zone except for the Vdroop mod.

Vdroop mod:

[DDTUNG]

They would be similiar to the ones for the P5N32-E SLI. Check the thread started by OPPAINTER in this section for details.

DDTUNG

[sbinh]

They would be similiar to the ones for the P5N32-E SLI. Check the thread started by OPPAINTER in this section for details.

DDTUNG

They are not the same ....

These are pix for P5N-E 650i SLI:



Close-up

[couppi]

This is what I got out of the thread:



These should be right, but I haven't tried them. Also, the solder points are damn small. You'd have to find out which of the resistors each leg corresponds to to make it easier.

[SaII]

:O nice find, so when are you going to test this mod?

[Lestat]

why on earth would you need a 1k resistor ? (1000, ie; 1megaohm)

[couppi]

why on earth would you need a 1k resistor ? (1000, ie; 1megaohm)

It's what celemine1gig says

OK, now for the mod, I'd try a 1 MOhm (in words, one Mega Ohm = 1000 K Ohm) trimmer potentiometer connected between pin#16 and pin#17. With the trimmer set to maximum resistance you change the original value by about 6-7%, which should be OK. So, start with maximum resistance and then tune it down in order to lower the droop voltage. Hope it works.

[celemine1Gig]

why on earth would you need a 1k resistor ? (1000, ie; 1megaohm)

1k is 1000 Ohms

1M is 1000000 Ohms

Why you need 1M:

Have a look here:
http://www.xtremesystems.org/forums/...d.php?t=126019

I recommended a 1M trimmer because the original resistance on the Asus P5N32-E was 59K.
What you do when adding the trimmer, is adding resistance in parallel to the original resistance. With the trimmer set to full resistance you want only a small influence on the original value. Now using the formula for parallel resistance you get the following with a 1M trimmer:

(59K x 1000K) / (59K+1000K) = 55,71K

55,71K / 59K = 0.944 , i.e. 94,4%

That means that with the poti in place and at full resistance you still get ~5.6% decrease in total resistance. If you take a lower value trimmer, you'll get a higher decrease, i.e. the voltage will be increased (perhaps even siginficantly) when the poti is yet to be trimmed.

But please measure resistance for this board and don't just take the values from other boards for granted. There can be quite some differences. The values named above are solely for the P5N32-E!

[DEVIL K-ce]

Mod's it's the same as OPP question ?

??


Regards

Martin


sory for english but is 31 december

[DEVIL K-ce]

Bump

Hmm vcore vcore for P5N-E is the same as P5W DH/P5B Dlx or not This is the same controler

Anyone help ?

Regards
Martin

[Lestat]

1k is 1000 Ohms

1M is 1000000 Ohms

Why you need 1M:

Have a look here:
http://www.xtremesystems.org/forums/...d.php?t=126019

I recommended a 1M trimmer because the original resistance on the Asus P5N32-E was 59K.
What you do when adding the trimmer, is adding resistance in parallel to the original resistance. With the trimmer set to full resistance you want only a small influence on the original value. Now using the formula for parallel resistance you get the following with a 1M trimmer:

(59K x 1000K) / (59K+1000K) = 55,71K

55,71K / 59K = 0.944 , i.e. 94,4%

That means that with the poti in place and at full resistance you still get ~5.6% decrease in total resistance. If you take a lower value trimmer, you'll get a higher decrease, i.e. the voltage will be increased (perhaps even siginficantly) when the poti is yet to be trimmed.

But please measure resistance for this board and don't just take the values from other boards for granted. There can be quite some differences. The values named above are solely for the P5N32-E!

thanks for the info guy.
and also correcting me on the megaohm not sure what i was thinking lol

i dont think i have seen anything over a 200k used.. 1mega seems pretty rediculous.

but this board needs a droop mod BADLY, and needs to be done on an easier spot.
the spot shown here is impossible. i mean you would need a soldering tip the size of the head of a needle to do it.

please tell me someone has found a better way.

[DEVIL K-ce]

Hmmm trace route from FB4 for this what I marked

Is this ok

edit : resistance beetwen FB4 and marked point's is 10 Ohm

[DEVIL K-ce]

Bumpy bump

I try and solder 50k Ohm to point marked on my previous post.

Tune down and nothing Still the same vcore no more

[celemine1Gig]

Bumpy bump

I try and solder 50k Ohm to point marked on my previous post.

Tune down and nothing Still the same vcore no more

With a original resistance of ~10 Ohm, the 50K trimmer is a bit overkill. That's also most likely the reason why you didn't see any vcore increase. It takes some time until the vcore would decrease, with the 50K in place. I'd rather use a 10K trimmer for this board then. And be sure to use a appropriate ground. That could also be why your mod didn't work.

Oh and are you 100% sure that the contact that you marked with a red line is really directly connected to pin#4(FB)? The resistance between the point and the pin should read less than 1 Ohm when measured with a multimeter.

...
the spot shown here is impossible. i mean you would need a soldering tip the size of the head of a needle to do it.

please tell me someone has found a better way.

Take a multimeter, set it to continuity test mode and then look for alternative solder points. It's as easy as that. Shouldn't take longer than 5 minutes, even when taking the mainboard out of the case.

[DEVIL K-ce]

In my previous post I'm writing wrong data :

Resistance beetwen this FB4 and marked point's is 0.10 Ohms not 10 Ohm ---> sory

Yes I'm sure trace route from FB4 is to this marked point.

Hmm 10K Ohm - I try this way

Thank's

Regards

Martin

[celemine1Gig]

In my previous post I'm writing wrong data :

Resistance beetwen this FB4 and marked point's is 0.10 Ohms not 10 Ohm ---> sory

Yes I'm sure trace route from FB4 is to this marked point.

Hmm 10K Ohm - I try this way

Thank's

Regards

Martin

Hold on!!! I thought the resistance between ground a pin#4 would be 10 Ohms. Sorry, I got this wrong. Don't use a 10K trimmer then. The trimmer value depends solely on the resistance between pin#4 and ground in this case.

[DEVIL K-ce]

Hold on!!! I thought the resistance between ground a pin#4 would be 10 Ohms. Sorry, I got this wrong. Don't use a 10K trimmer then. The trimmer value depends solely on the resistance between pin#4 and ground in this case.

Heh ok I understand

Pin 4 and ground - 10 Ohm

Ok I check this resistance i reaply.

Regards

Martin

edit :

ok i check and ... :| PIN4 and ground nothing :| PIN3 and ground - 22.2 Ohm

[celemine1Gig]

..
edit :

ok i check and ... :| PIN4 and ground nothing :| PIN3 and ground - 22.2 Ohm

What do you want to say with "nothing"? There is always a resistance between feedback and ground. Are you sure that the range was correct when measuring?

[DEVIL K-ce]

What do you want to say with "nothing"? There is always a resistance between feedback and ground. Are you sure that the range was correct when measuring?

DMM show me nothing when I meansure PIN4 and ground

DMM is ok, range is set ok.

I'm

[SaII]

http://www.vr-zone.com/?i=4450&s=12

try that i guess?

[DEVIL K-ce]

http://www.vr-zone.com/?i=4450&s=12

try that i guess?

Man thank's

I check vr-zone some days ago and nothing Good review

[SaII]

post back your results!

[sbinh]

Hmmm ... quick question. How would you "pencil"? It seems soldering is not my fav. ... ....

[quent]

DMM show me nothing when I meansure PIN4 and ground

DMM is ok, range is set ok.

I'm

Did you try with 220kOhm range ?

[DEVIL K-ce]

Ok i test vcore mod (soldering) in night and is ok. Work good.

500MHz FSB is no problem with max vmch from bios

Thank's for Shamino.

Regards

Martin