I recently bought a xeon 3060 . The batch number if i recall right is 7640A .
I really had a hard time finding a stable OC . and with stable i mean stable .
Lots of times i've seen orthos small fft crash after 12 -16h or more .
I can post at very high frequencies (3.9ghz) with a 'passive' cooled scythe ninja . The cpu never reboots or blue screens and almost always posts . but to get it orthos stable is just not possible and requires crazy voltages .
I'm now at 3290mhz (470x7) with 1.4 in bios . (1.329 load)
the board is a DS3 rev 3.3 .
anyway , to get like lets say 100-200mhz more out of it , i have to up voltage to 1.5 in bios . and even then it will error after 15+ hours orthos .
really hard to find a stable freq .

my E6300 L629B was alot easier and did 3430 mhz with 1.475 in bios (1.39 load). when it wasn't stable it would just blue screen/reboot or not post at all .