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(DDR4 Only) 2SPC Memory Confi guration with x4 DIMMs
Total # of
DIMMs
DIMM Popula-
1 x4 DIMM
tion within an
IMC
Note: Uniformly
2 x4 DIMMs
populate with x4
DRAMs/DIMMs
3 x4 DIMMs
4 x4 DIMMs
5 x4 DIMMs
DDR Channel 0, 1, 2: DIMM0 is populated with identi-
DDR Channel 0, 1: DIMM1 is populated with identical
6 x4 DIMMs
DIMM Popula-
1 pair of
tion within an
DIMMs
DDR1: Populate the second DIMM (for best perfor-
IMC
Note: Non-
2 pairs of
DDR0: Populate with 1 pair of non-equal rank DIMMs
equal in rank
DIMMs
pair of x4
DIMMs)
3 pairs of
DDR0: Populate with 1 pair of non-equal rank DIMMs
DIMMs
2 pairs+1
DDR0: Populate with 1 pair of non-equal rank DIMMs
(5DIMMs)
DDR2: DIMM0 is populated with identical DIMM as
(DDR4 Only) 2SPC Memory Confi guration with x8/x4 DIMMs Mixed
DDR4 RDIMM
Total # of DIMMs
DIMM Popula-
1 pair of x8, x4
tion within an
IMC
2 pairs of x8, x4
3 pairs of x8, x4
DDR Channel
Must be installed on iMC0 DDR Channel 0
DDR0: Populate with 1 DIMM
DDR1: Populate identically as DDR0
DDR0: Populate with 1 DIMM
DDR1: Populate identically as DDR0
DDR2: Populate identically as DDR1
DDR0: Populate with 2 DIMMs
DDR1: Populate identically as DDR0
cal DIMMs,
DIMMs
Populate 2 DIMMs per DDR channel
DDR0: Populate with 1 DIMM
mance)
DDR1: Populate identically as DDR0
DDR1: Populate identically as DDR0
DDR2: Populate identically as DDR1
DDR1: Populate with identical DIMMs as DDR0
DDR1
DDR Channel
DDR0: Populate with 1 DIMM
DDR1: Populate the second DIMM (for best perfor-
mance)
Populate with 1 pair of DIMMs on DDR0,
and identical pair on DDR1
A pair of DIMMs on DDR0, and identical pair on
DDR1, and DDR2
37
Chapter 2: Installation
Number
Adaptive Virtual
of Ranks
Lock Step
1
Y, only Bank VLS
>1
Y
1
Y, only Bank VLS
>1
Y
1
Y, only Bank VLS
>1
Y
x
Y
>1
Y
x
Y
>1
Y
>1
Y
x
Y
>1
Y
ADDC/SDDC
Features
No
No
No
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