VRM modify ICC_MAX to run high TDC OEM cpu

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DaFuHao

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Jul 11, 2025
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@Rollz170 Sorry, I read some of your comments that I don't understand. Do you know how to operate the machine of inspur SA5112H5? This machine is very special. It is said that it can only use the first-generation CPU of 3647. Maybe it has the same interface as inspur 5112M5. Because I read your comments, the 5112M5 has three pins that can be plugged in directly without a soldering iron. Is that right?
 

RolloZ170

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Apr 24, 2016
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Do you know how to operate the machine of inspur SA5112H5? This machine is very special. It is said that it can only use the first-generation CPU of 3647. Maybe it has the same interface as inspur 5112M5. Because I read your comments, the 5112M5 has three pins that can be plugged in directly without a soldering iron. Is that right?
sorry i never had a inspur SA5112M5 or 5112H5 at home, all info was provided by STH users.
from the pictures the H5 looks very different from M5 and there is no 3Pin header at same place.
you need to locate the VRM controller and trace the SCL,SDA signals to some connector,
that's what i have done all the time.
 

RolloZ170

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RolloZ170

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Looks like the guy is japanese not chinese.
初始发布
一个用于解锁服务器VRM功率墙(破解大功率CPU)的通用工具。
Copyright 2023-2025 剧毒的KCN, All Rights Reserved.

anyway, i hope we get some new features from that side soon.
i currently translate my code to c++ (compiled to x86)
 

celemine1gig

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May 25, 2020
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Just modified a X11DPI-NT with a MCP2221a USB adapter and Rollo's program. Worked like a charm, with the existing instructions.
Will most likely also mod an Intel S2600ST as well, sometime soon.
Thanks to Rollo for the great work!
 

Ulgracht

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Jul 20, 2025
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Thanks Rollo! I thought I had a MCP2221a in my stash but apparently not so I'm currently waiting for it to arrive. I tried briefly with the multimeter but I believe it also has something else in line. It looks like Saturday is the day, I'll let you know the results. Thanks again.
@RolloZ170 @abeasley Hey guys, I've got an ML350 as well. Appears they used different chips on these boards between versions possibly? My boards got SN1701021 chips in the spots abeasly has the TPS chips. The J266 connection is in the same spot though.
I'm trying to get 2 x Xeon 8275CL's working on this board, but the chip now has me lost.
Any advice?
 

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RolloZ170

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Hey guys, I've got an ML350 as well. Appears they used different chips on these boards between versions possibly? My boards got SN1701021 chips in the spots abeasly has the TPS chips. The J266 connection is in the same spot though.
I'm trying to get 2 x Xeon 8275CL's working on this board, but the chip now has me lost.
Any advice?
it is a OEM preprogrammed, also used by ASUS.
SN1701021 = TPS53678

scan for addesses first
"MCP2221a_iccmax_FF -TPS53678 XX"
 
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Ulgracht

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Jul 20, 2025
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it is a OEM preprogrammed, also used by ASUS.
SN1701021 = TPS53678

scan for addesses first
"MCP2221a_iccmax_FF -TPS53678 XX"
Hi Rollo, I'm having some issues with the scanning, so I was hoping I could double check all the equipment I'm using and the connections I've made, and the results I'm getting.

It;s a Proliant ML350 gen 10. 2 x xeon 4114 cpu's, 2 x 8gb ddr4-2400 in slots 8 & 10 for both cpu's. System diagnostics say its all healthy.

I've soldered pins onto the board in what I would think pin out 1, 2 & 3 are (see photo - please disregard my poor soldering skills - I've checked they are not shorting, etc).

20250724_013902.jpg 20250724_013924.jpg 20250724_014050.jpg

Pin 1 = yellow = SCL, pin 2 = black = Gnd, Pin 3 = blue = SDA. I have checked continuity at the end of the jumper wires to the labelled pin locations on the I2C board, and they all match.

I connect the I2C board as per the photo.

I have run the scan function using range 01 to 7F with a) no power connected at all, and b) with power connected but power button not pressed = nothing found.

I then turned on the system, and let it start post (it can't boot a host OS as there isn't one installed)

Now when I scan I get the following

Downloads\MCP2221a_VRM_mod(21.09.2024b)>MCP2221a_VRM_mod.exe -scan 10 7F
MCP2221a VRM mod utility (build 21.09.2024 beta).

The MCP2221a device is connected.

scanning at addr: 01
........... (I've removed the scans to shorten this).....
scanning at addr: 3E
scanning at addr: 3F
scanning at addr: 40
found device at addr: 40

Unhandled Exception: System.IndexOutOfRangeException: Index was outside the bounds of the array.
at _MCP2221a_VRM_mod.Program.scan_pmbus(Byte target17, Byte target27)
at _MCP2221a_VRM_mod.Program.Main(String[] args)

C:\Users\bmvdp\Downloads\MCP2221a_VRM_mod(21.09.2024b)>
I rerun the -scan function again starting from addr:41, and I get the same error at addr:44. Again start at addr:45, and get the error at addr:62, then so forth, getting the error at addr: 62, 64, 68, 6D, 74 & 75.

Can you provide any insight?
 
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RolloZ170

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I rerun the -scan function again starting from addr:41, and I get the same error at addr:44. Again start at addr:45, and get the error at addr:62, then so forth, getting the error at addr: 62, 64, 68, 6D, 74 & 75.

Can you provide any insight?
try this version
 

Ulgracht

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Jul 20, 2025
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try this version
Thanks Rollo. It didn't error and exit this time. Found a few entries, but also....

scanning at addr: 61
scanning at addr: 62
found device at addr: 62
probably TPS53678 found at addr: 62
scanning at addr: 63
scanning at addr: 64
found device at addr: 64
probably TPS53678 found at addr: 64
scanning at addr: 65
Can I ask how come the exe filename is different than the one you mentioned in your reply above ( MCP2221a_iccmax_FF )?
The link files have different names. Just want to be sure before I go bricking anything!
 

jinyihua

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Feb 27, 2025
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Boss, I would like to ask if the DELL R750XS 4189 platform can modify the CPU of this 300w 8375c
 

Bert

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Mar 31, 2018
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Has anyone applied this solution to x11dpt-b style motherboard?

Also is cooling a problem? I presume, CPUs will simply throttle under high load or would they continue to heat up at their base clock speeds?
 

moe123

New Member
Sep 1, 2025
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Thanks to the blogger for the tool! I am using Lenovo SR630 and cannot find the corresponding pin. Is there any picture that can help?