VRM modify ICC_MAX to run high TDC OEM cpu

[RolloZ170]

The second modification was successful. Sir, it's great, it's cool.

ok nice.

Sir, is the maximum memory frequency of 8272CL only 2666MHz?

yes 2666

 

[awaitnil]

ok nice.

yes 2666

Thank you. Thank you. Thank you very much. I have to say important things three times

 

[RolloZ170]

Thank you. Thank you. Thank you very much. I have to say important things three times

which motherboard/vendor is next ?

 

[awaitnil]

which motherboard/vendor is next ?

There's no next one left, this is a brand new machine. The previous item was second-hand, discarded by others, and learned to use.

 

[juey90]

I am back on this topic after a few days off.
I found the i2c header easily, it's right next to the controller IC.

Hi, could you please provide a picture of the i2c header/pinout ?
Is it this ?


And what is the Pinout there ? GND/3V3/SDA/SCL ?

 

[RolloZ170]

Hi, could you please provide a picture of the i2c header/pinout ?
Is it this ?

should be the 3pin VR-Debug header in top middle of your picture. find out which is ground and trace other two to the controller chip.
TPS53679 pin24/26

 

[conan2095]

Is there a tutorial for the SA5112M5 of the Inspur?

 

[RolloZ170]

Is there a tutorial for the SA5112M5 of the Inspur?

no. it rarely happen to get those.

 

[RolloZ170]

Is there a tutorial for the SA5112M5 of the Inspur?

check this picture and find similar on your motherboard.
VRM controller PXE1610Cxxx and the 3/4pin header

https://forums.servethehome.com/index.php?threads/vrm-modify-icc_max-to-run-high-tdc-tdp-oem-processors.38686/post-426040

you need (Adafruit) MCP2221a

 

[conan2095]

查看此图片并在您的主板上找到类似的图片。
VRM 控制器 PXE1610Cxxx 和 3/4 针接头
[URL 展开=“true”]https://forums.servethehome.com/ind...high-tdc-tdp-oem-processors.38686/post-426040[/URL]
您需要 （Adafruit） MCP2221a
[/引用]

I only found a few chips on the motherboard, and I didn't see the word pxe1610cxxx. Please help me to see

 

[conan2095]

I also found such two chips in these two positions

 

[RolloZ170]

I also found such two chips in these two positions

TI 1701021 is OEM TPS53678
check this picture and locate the matching chips on your motherboard. we need a 3/4pin I2C header.

 

[Alex0220]

I have a few S2600BPB boards(Four node chassis). Can I run 2x 8273CL without the VRM Mod?

 

[Alex0220]

8275CL looks interesting too. But I'm not sure if I can cool two 240W CPUs, each node has three or four 20K RPM Fans, so there is a lot of airflow.

 

[conan2095]

TI 1701021 is OEM TPS53678
check this picture and locate the matching chips on your motherboard. we need a 3/4pin I2C header.
View attachment 36817

I have purchased MCP2221a and ElmorLabs EVC2SE and flashed Supermicro X11DPG-QT with your tutorial, how to flash this TI 1701021 chip

 

[RolloZ170]

I have purchased MCP2221a and ElmorLabs EVC2SE and flashed Supermicro X11DPG-QT with your tutorial, how to flash this TI 1701021 chip

with ElmorLabs create TPS53678_PMBUS.xml, take the xml script for "TPS53679_PMBUS.xml" on page 1 but:
replace this
<Data>7901</Data> <!-- 7901 = tps53679 -->
with
<Data>7801</Data> <!-- 7801 = tps53678 -->

with MCP2221a you can use my c# cli app, supports tps53678 already.

 

[conan2095]

with ElmorLabs create TPS53678_PMBUS.xml, take the xml script for "TPS53679_PMBUS.xml" on page 1 but:
replace this
<Data>7901</Data> <!-- 7901 = tps53679 -->
with
<Data>7801</Data> <!-- 7801 = tps53678 -->

with MCP2221a you can use my c# cli app, supports tps53678 already.

Pls is it to replace this place

 

[RolloZ170]

Pls is it to replace this place
View attachment 36822

correct, and for completeness:
<Name>TPS53678 (PMBus)</Name>
if EVC finds more than 2x TPS53678 check ICC_MAX to choose the right ones. should be 228A value before modd, but highter than 150A.

 

[conan2095]

correct, and for completeness:
<Name>TPS53678 (PMBus)</Name>

Okay, thank you, I'll test it and send the process if it's successful

 

[codedata]

I successfully modded the Lenovo SR650 Server to run two Xeon 8259CL Processors.
Used RolloZ170's software. The scan revealed that I had to modify addr 74 and 76 on the PXE1610C chip.
Header location is under the fan assembly and looks like the other images here (like on Rollos Post from Jan 8, 2023).
You can boot the server into the System Setup (F1 on Boot), remove one of the middle fans out of the assemby and attach your cables on the fly. I used of the LAN shields for Ground, so you only have to manage two cables with your fingers. A bit tricky, but doable.

Great work @RolloZ170 ! Thanks!