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Chapter 3: Maintenance and Component Installation
Figure 3-5. Removing the PHM
Printed Triangle on Motherboard
Removing the screws in
the sequence of 4, 3, 2, 1
#1
#2
#3
#4
After removing the screws,
lift the Processor Heatsink
Module off the CPU socket.
CPU Socket
Memory Support
The X11DDW-L supports up to 1536GB of Load Reduced DIMM (LRDIMM), Registered DIMM
(RDIMM), and Non-Volatile DIMM (NV-DIMM) 288-pin, ECC DDR4-2666 memory in 12 slots.
Populating these DIMM modules with a pair of memory modules of the same type and size
will result in interleaved memory, which will improve memory performance.
Notes:
1. Use the memory modules of the same type and speed. Mixing memory modules of
different types and speeds is not allowed. 2. When installing memory modules, be sure to install
the first DIMM module in the blue memory slot, which is the first slot of a memory channel, and
then install the second DIMM in the black slot if 2DPC memory configuration is used. 3. Using
unbalanced memory topology by populating two DIMMs in one channel while populating one
DIMM in another channel will result in reduced memory performance.
