Reading memory specs in linux (Thaiphoon alternative)

[pitA]

Is there an alternative to Thaiphoon Burner in linux for reading DRAM specs?

 

I'm setting up a new system and the BIOS contains many more memory parameters than XMP provides. Also, using DOCP, the first 5 timings match XMP, but the rest are set automatically and do not match the XMP data. There is Ryzen DRAM Calculator for estimates on a lot of parameters but it first requires info that would be obtained through Thaiphoon.

[Fleetscut]

/proc has all the info you need about the system. /proc/meminfo should have what you need. Also theres /proc/cpuinfo as well if you need it.

[pitA]

I'm not seeing anything related to timings and BIOS settings.

[Fleetscut]

i know there is a command decode-dimms but ive personally never used it, dont know what kind of info it will give you.

[pitA]

Interesting. Googling suggests `decode-dimms` might give relevant info, but even with `i2c-tools` installed, I get "command not found".

 

There's also `dmidecode -t memory` which gives various info but not timings, at least on my system.

 

Running Fedora 27 on a Ryzen 7 2700X.

[pitA]

Good news and bad news.

Good news is `decode-dimms` worked after installing `i2c-tools-perl`. Bad news is it doesn't detect much on my system:
 

$ decode-dimms 
# decode-dimms version 6250 (2014-06-19 09:19:09 +0200)

Memory Serial Presence Detect Decoder
By Philip Edelbrock, Christian Zuckschwerdt, Burkart Lingner,
Jean Delvare, Trent Piepho and others


Decoding EEPROM: /sys/bus/i2c/drivers/eeprom/7-0052
Guessing DIMM is in                             bank 3

---=== SPD EEPROM Information ===---
EEPROM CRC of bytes 0-125                       OK (0x7EAF)
# of bytes written to SDRAM EEPROM              256
Total number of bytes in EEPROM                 512
Fundamental Memory type                         Unknown (0x0c)

---=== Manufacturing Information ===---
Manufacturer                                    Intersil
Custom Manufacturer Data                        2B 0C 36 00 00 36 15 ("+?6??6?")
Manufacturing Location Code                     0x2B
Part Number                                     Undefined


Decoding EEPROM: /sys/bus/i2c/drivers/eeprom/7-0053
Guessing DIMM is in                             bank 4

---=== SPD EEPROM Information ===---
EEPROM CRC of bytes 0-125                       OK (0x7EAF)
# of bytes written to SDRAM EEPROM              256
Total number of bytes in EEPROM                 512
Fundamental Memory type                         Unknown (0x0c)

---=== Manufacturing Information ===---
Manufacturer                                    Intersil
Custom Manufacturer Data                        2B 0C 36 00 00 36 15 ("+?6??6?")
Manufacturing Location Code                     0x2B
Part Number                                     Undefined


Number of SDRAM DIMMs detected and decoded: 2

 

Back to square one.