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From: Don Lewis <truckman@FreeBSD.org>
Subject: Re: Ryzen issues on FreeBSD ?
To: Peter Moody <freebsd@hda3.com>
cc: Nimrod Levy <nimrodl@gmail.com>,
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On 27 Jan, Peter Moody wrote:
> Whelp, I replaced the r5 1600x with an r7 1700 (au 1734) and I'm now
> getting minutes of uptime before I hard crash. With smt, without, with c
> states, without, with opcache, without. No difference.

Check the temperatures.  Maybe the heat sink isn't making good contact
after the CPU replacement.