Date: Tue, 29 Jul 1997 00:01:02 +0000 (GMT) From: Alfred Perlstein <perlsta@sunyit.edu> To: FreeBSD Development <freebsd@atipa.com> Cc: Kevin Van Maren <vanmaren@fast.cs.utah.edu>, freebsd-smp@FreeBSD.ORG Subject: Re: SMP? (fwd) Message-ID: <Pine.BSF.3.96.970728235727.16958A-100000@server.local.sunyit.edu> In-Reply-To: <Pine.BSF.3.91.970728210412.25478A-100000@dot.ishiboo.com>
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Something must have gotten lost in the translation :) What i would like to do is have both CPUs run at the same MHZ, but have the P200MMX clocked down to the same speed as the P150, i don't see a problem with slowing down the CPU, as usually the only difference between a P166MMX and a P200MMX is that somewhere in the 166's creation process something wasn't done perfect so that at 200Mhz it flakes out. If you are saying that the P150 and P200MMX run at different voltage... then that sucks, but hey what can i do? :) > > Mixing CPUs? Yes and no. It should be possible, but the CPUs really > > should be the same `stepping'. This isn't possible with a MMX and a > > non-MMX processor, as the Core voltages are different (and motherboard > > manufacturers only provide one voltage selection mechanism, as well > > as one clock-selecting mechanism -- theoretically you can run the > > CPUs are differnt speeds as long as the BUS speed is the same). > > > > We sell several boards, and the only possible "yes" situation I can think > of would be top mix a 256K and 512K PPro. I can not think of any other > viable mix. > > Each board has only one setting each for bus frequency, clock multiplier, > and voltage. > > Only Intel CPUs are SMP compliant (no K5, K6, Cyrix, etc.). AMD claims > they are developing an open multiprocessor spec, but it has not yet been > finalized or implemented. > > Kevin >
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