Jackson14,  The issue you are having is due to the number of dimms you are using. For the dual CPU memory configurations you would need 2, 4, 6, 8 or 9 dimms per CPU. So there isn't a configuration that will support 5 dimms on each CPU. The reasoning is that the dimms must match across all 3 channels. With 5 you would not be able to do so.  You would need to either go to 8 total dimms or 12 for the optimal configuration  Page 131 and 132 of this guide will go over the supported configurations- [URL] Let me know if this helps.
Hello, Is there a way to have a PER710 (2 CPU) with 160 GB of RAM configured? I have 10 x 16 GB 2Rx4 RAM modules but I'm not being able to install a valid configuration. can you please help me with a valid configuration/installation?  thanks!  Marcelo
Installing 16 GB RAM Modules