16
4.
System
Memory
The
Desktop
Board
has
two260-pin
DDR4
SO-DIMM
sockets
with
gold-plated
contacts.
NOTE
To be fully compliant with all applicable DDR SDRAM memory specifications, the board
should be populated with DIMMs that support the Serial Presence Detect (SPD) data
structure. This allows the BIOS to read the SPD data and program the chipset to
accurately configure memory settings for optimum performance. If non-SPD memory
is installed, the BIOS will attempt to correctly configure the memory settings, but
performance and reliability may be impacted or the DIMMs may not function under the
determined frequency.
A DDR4 SODIMM module has the same physical dimensions as a DDR3 SODIMM but has a 260-pin
footprint compared to the 204-pin DDR3 DIMM. DDR4 SODIMMs are notched differently to prevent
installation on a DDR3 SODIMM socket.
4.1 Memory Configurations
You
may
install
4
GB,
8
GB,
and
16
GB
unbuffered
non
‐
ECC
DDR4
SODIMMs
into
the
SODIMM
sockets
using
the
memory
configurations
in
this
section.
IF
you
installed
one
4GB
memory
modules,
the
system
may
detect
less
than
4GB
of
total
memory
because
of
address
space
allocation
for
other
critical
functions.
This
limitation
applies
to
Windows
OS
32
‐
bit
version
operating
system
since
it
does
not
support
PAE
(Physical
Address
Extension)
mode.
For
dual
‐
channel
configuration,
the
total
size
of
memory
module(s)
installed
per
channel
must
be
the
same
for
better
performance
(ChannelA
=
ChannelB).
Always
install
SODIMMs
with
the
same
CAS
latency.
For
optimum
compatibility,
it
is
recommended
that
you
obtain
memory
modules
from
the
same
vendor.
