MSI K8N Neo Platinum VDIMM Mod?

[Jasonxxx]

Anyone know anything about a Vdimm mod for this new board?

I noticed a chip on the top of the board above the dimm slots, maybe this is the chip to mod?

I don't have a close up the chip to see what it is, anyone have a good pic of this chip on the board?

This board should be out soon. It is soild all the way around, except all the reviewer report that if you change the multi in the bios and then try to reboot it will fail. You have to reset the multi in the bios everytime you reboot. I don't know which A64's the reviewers were using, but is this becuase of a locked processor?

Here is a pic of what I'm talking about.

http://www.hardocp.com/images/articl...rQq3_1_7_l.jpg

[YoupY]

Probally a week from now I have this board too. I don't think Vdimm is located there. I'm guessing the chip that is located almost under the [H]

If you can get us some numbers of that chip I think we'll be able to figure out a Vdimm mod.

Is there a Vcore mod available yet for this board ??

[Jasonxxx]

Well, I got the board up and running fine..(MSI Neo Platium)

I maxed out at 240htt X 10 with a 3200+ clawhammer CG with the memory at 200mhz 2,2,5,2 and that is stable with aircooling with 1.6vcore

Now I didn't try any other multiplers yet, except 9 X 250htt (1.65 vcore)and it didn't boot, so I suspect that it was the processor that was at fault, but since there is no chipset voltage adjustment, that could be a limiting factor too.( I have the chipset cooled with the Swifty MCX 159 cooler, so I know it's not to hot)

Now @ (1) to (1) htt/memory, I maxed out stabe with Corsair 3502 512MB X 2 @ 230MHZ with 2.5, 3, 10, 3 timming and 2.85vdimm / 1.6vcore

If a person had 3.2 - 3.4 vdimm you could run the fsb up ? (at least 240fsb I can pretty much confirm.)

Any Vdimm mods? Any ideas on the vdimm mod or even a chipset mod?

[Richdog]

I hear that A64's are a bit flakey when a large amount of voltage is pushed through the Intergrated Memory Controller, and a I believe some users have had them die with running 3.3v on the Vdimm. I'm intending to do the mod on my Gigabyte K8N PRO and also the MSI Neo Platinum i'll be getting next week. Think i'll be shooting for 3.1-3.2v max on the Vdimm though, don't want any nasty accidents.

[YoupY]

I haven't got any luck finding the vdimm mod. there are 2 mosfets on the right side of the proc. I did some measuring and I expect the Vdimm is controlled with the chip that is located under the CoreCell heatspreader like piece.
Vdimm can be measured at some blank spots for caps near the dimm slots.

From the two chips located near the mem I couldn't find the datasheets, and without them is hard to figure something out. Codes on the chips are:

- ICS CN320761A 0343 93737BF (centered above the mem)
- Winbond W83 310DS 403LB

The ICS chip looks like some kind of memory buffer chip. Found some datasheets of chips which numbers were close to the number I was looking for, and they didn't look like voltage regulator chips.

Vcore was easy to find. The board uses a chip that's very often used on A64 boards. (ISL6569CB). Connecting a 50k VR to pin 10 should give the posibility to regulate the Vcore.

I haven't tried it out, and there's a good chance I won't try it, since the board was crapping out on me. When I hooked up my drives my system won't boot. Bios was getting corrupted very fast also en I had to clear the bios several times before something happend. So I smell another RMA

[Jasonxxx]

Is it possible to heat up the two pins on the corecell block that stick through the mb and remove the block?

I kind of suspect that is the chip, but there should be a trace or resister, cap etc.. that you could do the mod on?

I will look around the board and checkings volts...

[Jasonxxx]

bump

[Jasonxxx]

Well I'm about 99% sure that you need to remove the core cell heatsink to be able to perform a vdimm mod.. I also noticed that out of the four blank Cap spots around the dimm slots that two showed the vdimm voltage and the other two show exactly half the vdimm voltage, which I would assume that is the Vtt..

When you mod the vdimm, does the vtt scale up with it, or do you need to also mod the vtt? I would think that the vtt must always be about half of what the vdimm is to be able to remain stable and scale correctly...

Any inputs on this?

[Jasonxxx]

Any information on the those chips that "YoupY" pointed out?

I still not sure what the " Winbond W83 310DS 403LB" chip does, I can' measure anything off the chip, cause I need small tips for the fluke.

[Jasonxxx]

Well I was able to measure the voltages on the "Winbond W83 310DS 403LB" chip in the uppper right corner of the board above the dimm slots.

3.3v on legs 5 - 8

2.86v (which is the vdimm, I also change the vdimm in the bios and it followed accodingly) on leg 1

No voltage reading on leg 2 ( if this is the chip that will allow us to mod the vdimm, this would the leg that we would mod with I believe)

1.43v on legs 3 and 4, which is the same as the vtt I measured


Any comments or anyone familar with this chip and what it does?

I would try a resister between leg (2) and ground, but my smb grabbers only have a 36k resister attached to them..

I will let someone else with more experience try it..

[YoupY]

Most cases the Vtt doesn't scale with the Vdimm. They are probally both controlled by the same chip.

My board went back for an RMA so I cannot test anything out anymore, but a possibility could be to attach the 3.3V direct to an elco where Vdimm is going through.

On one of the legs of the caps will probally read the Vdimm. Give that one the 3.3V and you can influence the Vdimm. It's a risky procedure however to try it out....

[Holst]

Hi all.
The 83310DS is for VBT only, not Vdimm.

This chip will track VBT with the input volage (normally Vdimm) so there should be no need for VBT mod.

I started a thread at XR on this,

If you find anything out can you post it over there as well please.
http://www.xtremeresources.com/forum...ewpost&t=32407

Those MSI corecell things might be made by winbond (ive seen MSI remark WB chips as there own before) any info you can give on the other chips on the board will help me out.

[Jasonxxx]

Well I directly connected 3.3v from psu to one of the + sides of a blank cap spot.

I noticed after measuring voltages that the blank cap spots that were 2.86v max before, were now were reading 3.3v, and the other two that looked to be exactly half the vdimm also tracked up to 1.67v from 1.43v (not sure if this is vbt or vtt)

Results, It didn't change a thing? I initially had the vdimm set to 2.5v in bios and slowly turned it up to 2.85v hoping that it would work, it seemed to be a little more stable. It would lock up windows just idling before at around 230mhz Mem w/ 2.5, 3, 3, 7 (1t) timmings, and after the mod it still would lock up, but seemed even more unstable. I changed from (1t) to (2t) and I was able to go on up to 240mhz, but when I ran sisoft mem bench it showed only 3300mb's bandwidth with 85% @ 240mhz??? @226mhz I'm getting around 3470mb's bandwidth with 95%

Maybe the vtt is not scaling with this? Any ideas?
I was able to remove the corecell heatsink and it shows MSI ICS, What should I look for?

[Jasonxxx]

By looking at the MSI Chip and comparing it to winbond ICS's I found this chip

W83304D, Advanced ACPI Controller for AMD K8, LQFP 48

Any ideas, Winbond didn't have any data sheets on them, I will do a search, maybe I can come up with one?


Anyone familiar with these chips?

[SlackeR]

measure vdimm on pin 7 in an empty Dimm-slot

[Jasonxxx]

Well, I already removed the mod. I didn't want to corrupt the OS..
I haven't backed it up yet..

Pin 7 is the vdmim supply Voltage?

Since I have the Core Cell heatsink off, what can I do now?

[YoupY]

Does it show any numbers besides MSI ICS, maybe some kind of logo

[Jasonxxx]

It has an MSI Logo on it..

As far as a part number, written right below the logo the part number starts with: MS-6 3*****

I can't read it with my own eye sight, while inside the case. Until I get it back out I can't make out the entire number....

[Jasonxxx]

Here is a High res pic of the Core Cell chip: This is with the CoreCell heatsink removed...

Naked CoreCell Pic

[Sir Lancelot]

So, are there any modds for this motherboard or not??

[Jasonxxx]

We are working on it

[Hell-Fire]

If someone can confirm hands down that this is the W83303D IC, then I can help you work the mods out for it no problem.

[Jasonxxx]

What would you suggest in order to see if it is indeed the W83303D IC..

If you could give me a couple of tests that could send me in right direction I would willing to test it out and see if it matches up..

It is kind of odd that MSI would put there logo on it, but you never know.. Maybe they are capable of making there own IC's and just paid Winbond to use there blueprints with there name on it....

I know this is possible, but how to go about it I'm not sure.

[Hell-Fire]

Prob same way companies rebadge Winbond ram ICs as well.

If you can manage a pic of the IC and the surrounding area...I can have you do some tests that will let us know whether its a Winbond IC or not.

In fact, that IC could be the W83303D or W83304D.

I will edit a pic I have here and ask for some readings.

[Hell-Fire]

Find out which resistors are connected to these 2 pins and then take voltage readings on each side of both resistors.

That will let me know if its a WinBond IC or not.

If you do not know how to do a connectivity test, let me know.