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 at 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 at freebsd.org mailing list
> https://lists.freebsd.org/mailman/listinfo/freebsd-stable
> To unsubscribe, send any mail to "freebsd-stable-unsubscribe at
freebsd.org"
>
--
--
Nimrod