On Fri, Feb 12, 2010 at 6:33 AM, Helmut Jarausch <jarau...@igpm.rwth-aachen.de> wrote: > On 12 Feb, Alan Mackenzie wrote: >> Hi, Gentoo, >> >> My new Gentoo box has become unusably unstable. >> > > Just one more reason. > > Have you got more than 4 Gb RAM installed? > > If yes, you might have to reduce memory speed. > Some CPUs (among them AMD Phenom) have difficulties > at the specified RAM speed if more than 1 memory bank is > installed. > I have been burnt by that several times. > Helmut.
I had exactly the situation you described. 4 GB of RAM worked great at 800MHz but when I increased to 8 GB I had to lower speed to something like 533 MHz otherwise system was very unstable. In my case Intel Core 2 Duo E6600. I contacted the RAM manufacturer and this was their recommendation as well.
