Hi Ward, On Wed, Sep 2, 2009 at 3:14 PM, Ward Vandewege<[email protected]> wrote: > Hi all, > > I'm having some problems with a supermicro h8dme board with 2 K8 processors > and 64 GB of ram. > > Sadly, the ram is of two types (that was not my decision :/). We have 8x 4GB > Samsung M393T5160QZA-CE6 and 8x 4GB Kingston KVR667D2D4P5/4G. Both of these > types of ram are dual rank DDR2, 667 MHz, CL5, 1.8 V, registered, ECC. > > The memory is installed like this: > > BANK CPU1 CPU2 > 1B KING KING > 1A KING KING > 2B KING KING > 2A KING KING > 3B SAMS SAMS > 3A SAMS SAMS > 4B SAMS SAMS > 4A SAMS SAMS > > With the proprietary BIOS, this setup works perfectly. That said, the manual > for the board does say it's not recommended to mix memory types. Our system > integrator mentions that when 16 banks are used, the memory runs at maximum > 533MHz.
As we talked about, it looks like the memory is sized correctly and the next thing to try forcing the memory speed slower. 8 dual rank dimms (16 banks) s[eed limitation might be spec'd or errata. A check might need to go into the main k8 mem init code. Marc -- http://marcjonesconsulting.com -- coreboot mailing list: [email protected] http://www.coreboot.org/mailman/listinfo/coreboot
