QUOTE(ernief @ Aug 1 2005, 08:33 AM)I have one 246 opteron on my K8WE(S2895) mobo, 89 watts. Want to add another opteron 246. Can the second CPU be the lower wattage opteron 246 HE and not present any problems? Both would be identical except for the wattage. Both are CG stepping.
Second question - Can I have two, 246 opterons on the K8WE, BIOIS 1.01, one with a CO stepping and the other a CG stepping.
I see that for the K8W (S2875) there was a BIOS update made to allow mixed CO and CG CPU support.
In another support document for the K8WE, Tyan is indicating that the K8WE will only support CG stepping or higher. Is this correct?
AMD recommends to run same CPUs with the same revision. However minimum requirement is the same voltage. If the CPUs are running on different vcores, it will defenitly not work.
As a result I doubt that you can run an 146HE and a normal one, as the HE has a lower vcore (1.3V vs. 1.5V). But you can drop in a CG revision CPU to your C0, as these revision uses the same vcore.
In the latter case, you may get an "Warning" message after booting. As it was posted before in the forum:http://forums.amd.com/index.php?showtopic=52306
Though this message only appears, if you mix C0 with (very old) B3 CPUs.
In short: Try to add a CPU with same vcore, and it will run.