MSI 865P-Neo Vmod

[Maciek]

Hi I from Poland. My english is not professional !!
i Please a Vmod to Motherboard MSI 865P-Neo Thx
P.S. link please !!!

[NoX]

Same request here.
It would be nice if there is also a vdroop mod available for this mobo. The vcore fluctuates like crazy.
Thanks!

[Hell-Fire]

Someone please take a pic of the area around the cpu socket so I can see the Vreg.

Also pics of the area around the dimms and agp port would be nice.

[NoX]

Yeahhhhh , thx HELL-FIRE for taking a look at this!!! You are the man!!!

I can take pics of my mobo but they might not be very helpful because I have heatsinks all over the place, covering most of the mosfets.
Somebody else provide the pics for HELL-FIRE, plz!!!!!!!!!!!!!!!!

[Hell-Fire]

Dont care about the fets as much as I care about the possible Vregs that are onboard is all.

Any pics would be helpful.

[skate2snow]

Bring some pics...

Or find all IC's w/ 8 leg, 14 leg, and 16 legs, and say us whats writed on the first line.

Most of the times, it will be close to the part that you whant to Vmod...

[NoX]

Ok here we go:



















I have to find a host server where I can post them at 2100x1600. I can take detailed pics of areas where you need to take a closer look Plz let me know!

Thanks !

Edit: hmmm is it working?
Now it should

[NoX]

One more, close to the dimm.




Personally, since the OCZ booster release is very close, I think that the most useful mod would be for the vcore.

[Hell-Fire]

I am betting that the chip under the CoreCell sink is the chip controlling Vagp, Vtt, and Vdimm.

Please give the markings on the chip I circled pointing out the Vcore Vreg and make sure only one of those is present on the board as a few boards have 2 now.

You can ignore what I said about removing the CoreCell sink in the pic below if you dont plan on doing a Vtt mod and are buying an OCZ Vdimm tool.

[skate2snow]

Hell-Fire, the core-cell winbond chip is a hardware monitoring IC, and not a power management IC....

[NoX]

Hi,

The codes on the only Vcore Vreg chip on the mobo are:

ISL6556BCB
P0327ABA2

To properly take the heatsink off the corecell chip I have to remove the mobo from the case. I will have time to do it this weekend. I don't know if this could be a hint but I read on the MSI forum that the Corecell chip controls the dynamic overclocking feature of this board (it raises automatically the FSB under cpu load).
Vdimm is not a problem. The bios allows you to set it up to 3.0v which is enough for my OCZ EB. Plus the OCZ booster is compatible with the mobo.
Vcore instead needs to be stabilized. On average, under load it drops by 0.07v regardless of the initial value. I can OC to 250FSB@1.515v (real) with PAT enabled, but under load the vcore drops to ~1.430v, way too low to run at 3750Mhz, so the PC randomly reboots. Do you think there is a way to lock the voltage?

[Hell-Fire]

Originally posted by skate2snow
Hell-Fire, the core-cell winbond chip is a hardware monitoring IC, and not a power management IC....

Thats why I asked for a pic of the entire board as I need to see he entire area around each particular component in question.

[Hell-Fire]

Originally posted by NoX
Hi,

The codes on the only Vcore Vreg chip on the mobo are:

ISL6556BCB
P0327ABA2

To properly take the heatsink off the corecell chip I have to remove the mobo from the case. I will have time to do it this weekend. I don't know if this could be a hint but I read on the MSI forum that the Corecell chip controls the dynamic overclocking feature of this board (it raises automatically the FSB under cpu load).
Vdimm is not a problem. The bios allows you to set it up to 3.0v which is enough for my OCZ EB. Plus the OCZ booster is compatible with the mobo.
Vcore instead needs to be stabilized. On average, under load it drops by 0.07v regardless of the initial value. I can OC to 250FSB@1.515v (real) with PAT enabled, but under load the vcore drops to ~1.430v, way too low to run at 3750Mhz, so the PC randomly reboots. Do you think there is a way to lock the voltage?

Can you give me a resistance check on pin #12 of the ISL6556 IC please?

[NoX]

Ok so you want resistance between GND and pin 12. Right? I l am at work, let me get back home and I'll take the reading. If traffic isn't bad I should be there by 6:30 PST.

[Hell-Fire]

Yes....between GND and #12.

[Hell-Fire]

Also, what are the markings on these 2 chips??

Sometimes the mod location is not actually FB when other ICs play a role in the Vcore regulation.

[NoX]

Sorry for posting this late.

The resistance check on pin 12 gave 2.955 KOhms.

Chips codes:


Crappy pic of the entire mobo:

[Hell-Fire]

Are you sure those markings are not HIP6601BCB and not RIP66018CH ??

Also, does the FET near the LM358 read Vdimm? What are the voltages on the back of the FET, and the 2 legs going into board?

[NoX]

Yes you are right, it's HIP6601BCB sorryit is very hard to read.

To get the voltage readings you are asking for where do I place the probes ? Do you want Vs, Vg,Vgs, Vds?, Vd?

[NoX]

What kind of transistor is? A JFET, MOSFET or MESFET?

[Hell-Fire]

Originally posted by NoX
What kind of transistor is? A JFET, MOSFET or MESFET?

Mosfet circled here. Check the back plate, and the 2 legs.

[Hell-Fire]

Originally posted by skate2snow
Hell-Fire, the core-cell winbond chip is a hardware monitoring IC, and not a power management IC....

That is incorrect sir.

The CoreCell on the MSI boards I have looked over covers a remarked WinBond IC that indeed controls Vtt, Vdimm and Vagp.

Be careful what you post unless you are 100% certain as you may point people away from looking at an IC all together.

Not to mention I cant imagine a 48 pin IC thats responsible for hardware monitoring.

[NoX]

[Hell-Fire]

I take it that point V2C is reading your Vdimm then. Are there any other FETs reading Vdimm around the dimm sockets??

Ok, versus the resistance you gave me on pin #12, I need one now on pin #15. I dont think FB is the target pin for this mod as it is on many/most mods.

[NoX]

Pin #15 ---> 1.262V
In BIOS the memory voltage is set at 2.85v
I don't see any other MOSFET close the DIMM slots. How about those two indicated in the pic? Do they have any relevance?