Searching for a new motherboard

FWIW, IIRC, DDR5 has ECC built-in by design... so any DDR5 sticks OP gets will have ECC built in. Trouble is, DDR5 is expensive af. $100 USD will only net you an 8 GB stick of DDR5. Blame the AI-driven rammageddon.
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astyle said:
FWIW, IIRC, DDR5 has ECC built-in by design... so any DDR5 sticks OP gets will have ECC built in. Trouble is, DDR5 is expensive af. $100 USD will only net you an 8 GB stick of DDR5. Blame the AI-driven rammageddon.
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That built-in ECC is worthless. It just hides errors.

There are real ECC DDR5 modules. Both registered and unbuffered.
 
You used to be able to tell by counting the number of chips on the dimm module, it's got more complicated recently. There are now ECC UDIMMs, and EC4/x72 RDIMMS and EC8/x80 RDIMMS ('U' for unregistered and 'R' for registered), where the highest server grade is EC8/x80 RDIMMs. The EC4/x72 is a lower-cost version of EC8/x80 (72 bits versus 80 bits), but having lower fault-tolerance.
Eg. see pages 4-5 of https://www.scribd.com/document/807434495/RAM and here https://lenovopress.lenovo.com/lp1618-introduction-to-ddr5-memory
 
I don't recommend the Gigabyte Aorus Master X670E. The board has issues with the igc Ethernet driver, which can stop working once your USB keyboard or mouse begins rapidly connecting and disconnecting (that issues is caused by the usb extension port cable, mobo has some issues to handle that, tried many vendors). When that happens, you can lose not only Ethernet but also your input devices.USB stability on this board is a pain, and these problems are tied to the onboard Intel iwl Wi‑Fi/Bluetooth hardware. Disabling Wi‑Fi and Bluetooth is basically mandatory if you want any stability, to avoid unexpected hw failures.

There are also issues with the M.2 PCIe slots. Installing a KC3000 (same wirh WD Black) often requires 2–3 reboots after a cold start to avoid controller hangs. Additional sysctl tuning or bandwidth limiting helps reduce burst R/W behavior, but once the NVMe hangs, a hard reset is your only friend — just like with all the other issues mentioned above.This is not limited to FreeBSD; I’ve seen the same behavior on Linux and Windows.

Intel confirmed that this motherboard has several components that were improperly mounted.

My longest uptime was 3 months and it hangs... I couldn't get any dump data back for debugging.

My old Asus Sabertooth Z77 is a trillion times more stable than this board -> 7y uptime. UPS failed and had to replace it.
 
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