Acer AR380 F1 User Manual - Page 70

Upgrading the system memory

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52 3 System upgrades Upgrading the system memory System memory interface The system has eighteen DIMM slots. Each CPU controls nine slots. The DIMM slots support DDR3-1333 registered/unbuffered ECC memory modules. For single rank and dual rank RDIMM, a maximum 3 DIMMs per channel and a total 18 DIMMs can be supported. For UDIMMs and quad rank RDIMMs, only 2 DIMMs per channel are supported and maximum total 12 DIMMs. • Each CPU has three memory channels (channel 1, 2 and 3). • Each channel has 3 slots. To maximize the memory performance, the DIMM modules should be installed as balanced as possible among processors and memory channels. And slots with the same slot number across memory channels should be populated with identical DIMM. Independent mode: Single processor configuration No. of DIMM P11C P11B P11A P12C P12B P12A P13C P13B P13A 1 X 2 X X 3 X X X 4 X X X X 6 X X X X X X 9* X X X X X X X X X *SR/DR RDIMM only

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3 System upgrades
52
Upgrading the system memory
System memory interface
The system has eighteen DIMM slots. Each CPU controls nine slots. The
DIMM slots support DDR3-1333 registered/unbuffered ECC memory
modules. For single rank and dual rank RDIMM, a maximum 3 DIMMs
per channel and a total 18 DIMMs can be supported. For UDIMMs and
quad rank RDIMMs, only 2 DIMMs per channel are supported and
maximum total 12 DIMMs.
•
Each CPU has three memory channels (channel 1, 2 and 3).
•
Each channel has 3 slots.
To maximize the memory performance, the DIMM modules should be
installed as balanced as possible among processors and memory
channels. And slots with the same slot number across memory channels
should be populated with identical DIMM.
Independent mode:
Single processor configuration
*SR/DR RDIMM only
No. of
DIMM
P11C
P11B
P11A
P12C
P12B
P12A
P13C
P13B
P13A
1
X
2
X
X
3
X
X
X
4
X
X
X
X
6
X
X
X
X
X
X
9*
X
X
X
X
X
X
X
X
X