Date: Wed, 24 Jan 2018 13:21:39 +0000 From: Nimrod Levy <nimrodl@gmail.com> To: Mike Pumford <michaelp@bsquare.com> Cc: freebsd-stable@freebsd.org Subject: Re: Ryzen issues on FreeBSD ? Message-ID: <CAMgUhprwX5hQkNcyA4C%2BeU%2B_pQVfH-6VbH%2BsWmLc7U3B1WhQkg@mail.gmail.com> In-Reply-To: <bb9d9da0-e1c1-155d-5c80-db0f7f4a1388@bsquare.com> References: <8e842dec-ade7-37d1-6bd8-856ea1a827ca@sentex.net> <3b625072-dfb3-6b4f-494d-7fe1b2fa554c@ingresso.co.uk> <2c6ce4dd-f43c-7c40-abc2-732d6f8996ec@sentex.net> <tkrat.6d8f44d87e74fa14@FreeBSD.org> <795dbb79-3c18-d967-98b9-5d09a740dbfe@sentex.net> <CAMgUhpr%2B5HeBi1MRegs=XoKpdHW8-i%2Bec0k-DNaL_pcN6PCPKw@mail.gmail.com> <tkrat.5ec856810e0c7ced@FreeBSD.org> <CAMgUhpqZyCOjqVhMCAi-b_JaKYtyfqDf0pOcX0LwV2dcTuusyg@mail.gmail.com> <CAMgUhpqpYpoi1bD9h_SYvh83g_Csky%2BqMkTsOYZ1zcHYxtMeHg@mail.gmail.com> <dd29d77a-deb9-423e-f9b8-cb07387bbfd5@sentex.net> <9b769e4e-b098-b294-0bce-8bb1c42e8a59@rootautomation.com> <a601973f-9205-8dd9-7f78-a7f03985ab4a@sentex.net> <CAMgUhpop3=J7TQimK2iHdGTc=hnTgCEZDqibDSRCyTPMWX5wJQ@mail.gmail.com> <CAMgUhprfSFv1268-MtQoMn%2BgD-DtOhR2-rnFsMHTgJrK0dop6Q@mail.gmail.com> <508a8c83-a449-3c5d-c3bf-b308d91c80c0@bsquare.com> <CAMgUhprXtknTNxW63e5hVFPZP3ad6GbjLCwqe5N9hGbvxWm_tw@mail.gmail.com> <bb9d9da0-e1c1-155d-5c80-db0f7f4a1388@bsquare.com>
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If my google-fu is any good today, DDR3 maxes out at 2133. DDR4 seems to go up to 3200[1]. The motherboard claims to support all speeds. This RAM is supposed to be DDR4-2400, but if it keeps things happy, I'll run it at 2133. [1] https://www.kingston.com/us/memory/ddr4 On Wed, Jan 24, 2018 at 7:28 AM Mike Pumford <michaelp@bsquare.com> wrote: > On 24/01/2018 12:11, Nimrod Levy wrote: > > The RAM was detected by the MB as 2400. I didn't change it until I set > > it to the slower speed. > > > I guess the Intel motherboards I have are more conservative then. They > default to the standard RAM profile (slower than what it is sold as) and > you have to explicitly enable the faster profiles (which do also come > from data read from RAM). So it seems like your BIOS vendor is picking > the faster profile as a default. > > I've got a couple of intel systems like this (one windows and one BSD) > and neither ran stable with the faster RAM profiles. > > From what I read at the time 2133 is the official upper limit of the > DDR4 standard. Any speed faster than that is an overclock profile. > > Mike > > -- > Mike Pumford | Senior Software Engineer > > T: +44 (0) 1225 710635 <+44%201225%20710635> > > BSQUARE - The business of IoT > > www.bsquare.com <http://www.bsquare.com/>; > _______________________________________________ > freebsd-stable@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org" > -- -- Nimrod
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