Vdimm/Vcore mod for MSI K8N Neo2 PLatinum-54G Edition S939

[RebelsHaven]

Yes, that is correct... The Vddr measure point tracks the "Memory Voltage" as it's set up in the BIOS "Cell Menu" The Vddr measure point also has zero ohms between it and the capacitors positive lead that is shown in your bluish pix above....

Vddr measure point = Vdimm exactly, yet when I connect Vddr or the (+) of that cap to 3.3Vrail, system crashes going into W2K....

Have you connected the (+) of the cap to the 3.3V rail...?

[|-jokker-|]

Thanks GravediggA [[]]
For me the vio mod is the best possible , because i have bh5 and i don´t want to cut the board :S
But this with my ocz will rock hard

[Barr3l Rid3r]

The Mosfet where u reading the Vddr is regualting the Voltage! He gets 3,3V
anyway, but then he make 2,6/2,7/2,8 V etc. from it. Correct me if im wrong.

yes, but I tough he isn't trying to connect it into input. I think He's trying to feed 3.3V straight to the output of that fet. But I still having a doubt about it. Why we do have a Fet to control the voltage if Vdimm is directly supllied by 3.3V line? The minor adjustments is done by the voltage controller and core cell.

[funkflix]

Yes, that is correct... The Vddr measure point tracks the "Memory Voltage" as it's set up in the BIOS "Cell Menu" The Vddr measure point also has zero ohms between it and the capacitors positive lead that is shown in your bluish pix above....

Vddr measure point = Vdimm exactly, yet when I connect Vddr or the (+) of that cap to 3.3Vrail, system crashes going into W2K....

Have you connected the (+) of the cap to the 3.3V rail...?

We should ask CodeRed, he already made it. (+) ist the quadratic leg of
the under side. imho.

[funkflix]

yes, but I tough he isn't trying to connect it into input. I think He's trying to feed 3.3V straight to the output of that fet. But I still having a doubt about it. Why we do have a Fet to control the voltage if Vdimm is directly supllied by 3.3V line? The minor adjustments is done by the voltage controller and core cell.

+5V or 3,3V, one of them. Corecell is only Software afaik, no electronic component.

[RebelsHaven]

The "Standard 3.3Vdimm Mod" that can be done on any board is to connect the 3.3V rail to the Vdimm. That way the memory sees 3.3V....

Works on every board I have except this K8N Neo2. Crashes going into W2K. Removed, all is fine....

Problem has something to do with the "Core Cell" controlling the voltages I think...

[RebelsHaven]

The "Vddr Measure FET" has 3.3V on it input(drain) output(source) is controlled by BIOS adjusting "Memory Voltage"....

[funkflix]

Hmm, hope CodeRed will look @ this thread again and will explain something.
He told me that it work fine at his K8N Neo2.

Mod works fine on my NF7, too!

Btw., which Ram and which slots do u use?

[RebelsHaven]

"Why we do have a Fet to control the voltage if Vdimm is directly supllied by 3.3V line?"

The FET is there to be able to adjust the "Memory Voltage" from 2.6V to 2.85V. No board maker give you 3.3V for the memory....

[RebelsHaven]

"Btw., which Ram and which slots do u use?"

Running GEIL PC4400 in slots 1 & 2... I can get to 275FSB @ 2.85Vdimm but I want 3.3Vdimm to reach 300FSB....

[funkflix]

Mhm, dont think ur Ram really like this high voltages, its Samsung TCCC or
Hynix -5B or something else. They get really unstable by high Vdimm!

[RebelsHaven]

NO, GEIL loves 3.3V I run it on several other boards at 3.3V. It's the Ultra Platinum... Not sure of the chip as it's got the heatspreaders on it....

[RebelsHaven]

I'm trying to better this. It's as far as the DDR550 will go...

[funkflix]

http://mar.h0sted.org/ramliste250804.htm

Ur Geil are Hynix D5 , ever i read something bout Hynix D5 they have
said, they dont like high voltage. But i dunno. Lets see tomorrow how my
BH5 will work with it. U messured the Vdimm after Mod on the Mosfet?
Does it show u the correct Volatge?

[RebelsHaven]

"U messured the Vdimm after Mod on the Mosfet? Does it show u the correct Volatge?"

Yes, shows 3.3V.... Very strange as I run this GEIL at 3.3V on Shuttle AN35/N, Jetway N2PAP-Ultra.....?????

Maybe Neo2 is more sensitive to the problem......

Thanks for the memory list.....

[funkflix]

Maybe Neo2 is more sensitive to the problem......

Thanks for the memory list.....

Most ppl with BH5 and Neo2 says that they wont get high @ 2,85V as at any
other Board before. They mostly maxed out @ 220 MHz. Its really strange
with Neo2. Maybe the "same" Problem with ur Geil.

Np.

[RebelsHaven]

OK, so that is why the "Standard Vdimm 3.3Vrail to Vdimm Mod" is not working for me....

I thought is was strange that it gets as far as booting into W2K before problems. If I had it all wrong, the board wouldn't even POST....

[funkflix]

It seems that the Neo2 isnt easy to handle. But maybe someone other have an
good explanation for ur problem.

[RebelsHaven]

I'm happy just knowing what you have told me. I'll get better memory now that I know what is wrong... Thanks!

[funkflix]

Now i have an little question for u, bcs i dont want to do anything wrong tomorrow. Its that point in the yellow circle the correct one to connect the
wire?

[RebelsHaven]

I don't know. I'm at the Office and the board is home. It is the (+) end of the capacitor. If you wait 8-10 hours, I will post a picture....

I just ordered OCZ EL 3200 with TCCD chips......

[funkflix]

Ok, no prob to wait for me Wish u luck with the TCCD!

[RebelsHaven]

Thnx.....

[|-jokker-|]

I am now using a k8ns and with the vio mod the board can t pass the 220 htt dual , with 3.26v to the memory thats , my problem and the reason that e see to goo to the msi but if the msi dont like bh5 also i cant see where i am going :S
Can anyone test bh5 in this mobo with the vio ?
Thanks people

[RebelsHaven]

I have some Mushkin bh-5 that I'll test on an unmodded board.... I've had the memory to 240FSB on nF2 boards.... In about 5 hours I'll be at home from the office....