https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=219399
--- Comment #163 from Don Lewis <truck...@freebsd.org> ---
(In reply to Mark Millard from comment #159)
This is what dmidecode reports on my machine:
Handle 0x0027, DMI type 16, 23 bytes
Physical Memory Array
Location: System Board Or Motherboard
Use: System Memory
Error Correction Type: Multi-bit ECC
Maximum Capacity: 64 GB
Error Information Handle: 0x0026
Number Of Devices: 4
Handle 0x002E, DMI type 17, 40 bytes
Memory Device
Array Handle: 0x0027
Error Information Handle: 0x002D
Total Width: 128 bits
Data Width: 64 bits
Size: 16384 MB
Form Factor: DIMM
Set: None
Locator: DIMM 0
Bank Locator: CHANNEL A
Type: DDR4
Type Detail: Synchronous Unbuffered (Unregistered)
Speed: 2400 MHz
Manufacturer: Micron Technology
Serial Number: 14C07593
Asset Tag: Not Specified
Part Number: 18ASF2G72AZ-2G3B1
Rank: 2
Configured Clock Speed: 2400 MHz
Minimum Voltage: 1.2 V
Maximum Voltage: 1.2 V
Configured Voltage: 1.2 V
[snip]
Note the "Error Correction Type: Multi-bit ECC". The individual DIMMs are a
bit strange. On my other machines the ECC bits are included in "Total Width".
I have visually verified the extra RAM chips for the ECC bits are present.
This is what I see on my FX-8320E machine:
Handle 0x002C, DMI type 16, 23 bytes
Physical Memory Array
Location: System Board Or Motherboard
Use: System Memory
Error Correction Type: Multi-bit ECC
Maximum Capacity: 32 GB
Error Information Handle: Not Provided
Number Of Devices: 4
Handle 0x002E, DMI type 17, 34 bytes
Memory Device
Array Handle: 0x002C
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: 8192 MB
Form Factor: DIMM
Set: None
Locator: DIMM0
Bank Locator: BANK0
Type: DDR3
Type Detail: Synchronous Unbuffered (Unregistered)
Speed: 1600 MT/s
Manufacturer: Micron
Serial Number: 0D43FEC
Asset Tag: AssetTagNum0
Part Number: 18JSF1G72AZ-1G6E1
Rank: 2
Configured Clock Speed: 800 MT/s
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