SO what ECC memory is recommended ? the Micron/Crucial one or the Kingston ?
And are we 100 % sure the MTC20C2085S1EC48BA1R is indeed full ECC ? (and not just on-die ECC that all DDR5 modules have) ?
Yes. They have 10 chips and report 72 bits wide via dmidecode on Linux.
Array Handle: 0x001C
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: 32 GB
Form Factor: DIMM
Bank Locator: P0_Node0_Channel1_Dimm1
Type Detail: Synchronous Unbuffered (Unregistered)
Speed: 4800 MT/s
Manufacturer: Micron Technology
Serial Number: S802C0F22453C3DB3E1
Asset Tag: 9876543210
Part Number: MTC20C2085S1EC48BA1
Configured Memory Speed: 3600 MT/s
Minimum Voltage: 1.1 V
Maximum Voltage: 1.1 V
Configured Voltage: 1.1 V
Memory Technology: DRAM
Memory Operating Mode Capability: Volatile memory
Firmware Version: Not Specified
Module Manufacturer ID: Bank 1, Hex 0x2C
Module Product ID: Unknown
Memory Subsystem Controller Manufacturer ID: Unknown
Memory Subsystem Controller Product ID: Unknown
Non-Volatile Size: None
Volatile Size: 32 GB
Cache Size: None
Logical Size: None
edac doesn't report out yet, because the kernel in openSUSE Leap 15.4 (5.14.21) is not new enough to have the new edac support for the W680 chipset.