According to the manual the Dell Precision T5500 supports a maximum of 72GB of RAM, but this machine was released before 16GB dimms existed. The 72GB max is from using nine 8GB dimms. The manual does hint, in a statement about dimm height, that 16GB dimms may work in the system, when released. This raises the question, if two CPUs are installed and they support 144GB of RAM, would this machine work with greater than 72GB of RAM? Could it be maxed out with nine 16GB dimms to 144GB of RAM?