Acer AB460 F1 - Manual (Page 174)

3 Server Blades: Setup and Installation 154
Memory Support
The AB460 F1 blade module supports up to 192 GB/48 GB of ECC
Registered/Unbuffered ECC DDR3-1333 SDRAM in twelve DIMM
sockets.
Memory Installation
The mainboard of each blade unit must be populated with DIMMs
(Dual In-line Memory Modules) to provide system memory. The DIMMs
should all be of the same size and speed and from the same
manufacturer due to compatibility issues.
Populating Memory Slots
The mainboard of a AB460 F1 blade module has twelve memory slots,
depending upon the blade model. Both interleaved and non-
interleaved memory are supported, so you may populate any number
of DIMM slots.
Populating three slots at a time (DIMM1A + DIMM2A+ DIMM3A, etc.)
with memory modules of the same size and of the same type will result
in dual-channel, interleaved memory, which is faster than single-
channel, non-interleaved memory. See the following tables and
Figure 3-106 for details.
Note: For an interleaved configuration, memory modules of the
same size and speed must be installed in pairs. You should not mix
DIMMs of different sizes and speeds.