Supermicro 2020A-8R, User Manual

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5-8
A+ Server 2020A-8R User's Manual
Figure 5-4. Side and Top Views of DDR Installation
To Install:
Insert module vertically
and press down until it
snaps into place. The
release tabs should
close - if they do not
you should close them
yourself.
To Remove:
Use your thumbs to
gently push each re-
lease tab outward to
release the DIMM from
the slot.
Note the notch in the slot and on the bottom of the DIMM.
These prevent the DIMM from being installed incorrectly.
Optimizing memory performance
If two processors are installed, it is better to stagger pairs of DIMMs across both
sets of CPU DIMM slots, e.g. fi rst populate CPU1 slots 1A and 1B, then CPU2 slots
1A, and 1B, then the next two CPU1 slots, etc. This balances the load over both
CPUs to optimize performance.
Maximum memory (two CPUs) : 32 GB for DDR266/200 and 16 GB for
DDR400/333. If only one CPU is installed, maximum supported memory is halved
(16 GB for DDR266/200 and 8 GB for DDR400/333).
Populating Memory Banks for Non-Interleaved (64-bit) Operation
CPU1
DIMM1A
CPU1
DIMM1B
CPU1
DIMM2A
CPU1
DIMM2B
CPU2
DIMM1A
CPU2
DIMM1B
CPU2
DIMM2A
CPU2
DIMM2B
X
X X
X X
X X
X X
X X