I need to upgrade my 2-way dual-opteron workstation (used for number crunching only) to 4-way.

Having 16 2GB ECC 184-pin mem, I plan to move to 8xx dual-opteron (easy to find). I am examining Supermicro motherboards H8QCE H8QC8 type to this concern (http://www.supermicro.com/Aplus/moth...orce/H8QC8.cfm). First, I do not understand what they mean with "Only Quad-Processor Configurations Recommended". Apart from that, Iwould greatly appreciate advice about the suitability of such mainboards for four 8xx series of dual-opteron (i.e. 4 nodes, 8 cpus, shared memory, 32GB in 16 slots, two software-raid1 WD Raptor HD) Debian Linux amd64. Of course, any major bottleneck intrinsic to the motherboard for such use would render vane my efforts. Graphical performance of no interest (I am not going to install X).

Thanks

francesco pietra