Supermicro - SuperServer 6016T-6RFT+ (Super X8DTU-6TF+)

SYS-6016T-6RFT+

Faster memory will clock down to run at optimal speed and voltage depending on processor model and number of modules installed.
Due to chipset limitations, Kingston's DDR3 Quad Rank memory will operate at 1066MHz in the first Triple Channel bank. Adding Quad Rank modules in the second Triple Channel bank will operate at 800MHz. The third memory bank if present must be unpopulated.
This system supports either Registered ECC or Unbuffered ECC memory. Mixing Registered ECC and Unbuffered ECC modules is not supported within this system.

Intel Xeon 5600 Series processors support 1.5V DDR3 and 1.35V low-voltage DDR3L memory. If 1.5V and 1.35V DIMMs are mixed, all DIMMs run at 1.5V. Three DIMMs per Channel (DPC) is only supported at 1.5V. Xeon 5500 Series processors support only 1.5V memory.
Due to chipset limitations, Unbuffered ECC DIMMs are limited to TWO Triple Channel banks per processor on Intel Xeon 55xx series systems.