FatTwin F619P2-RT/RTN/RC0/RC1 User's Manual
56
DDR4 Only 2SPC Memory Configuration with x4 DIMMs
Total # of
DIMMs
DDR Channel
Number
of Ranks
Adaptive
Virtual Lock
Step
DIMM Population
within an IMC
Note: Uniformly
populate with x4
DRAMs/DIMMs
1 x4 DIMM
Must be installed on iMC0 DDR Channel 0
1
Y, only Bank VLS
>1
Y
2 x4 DIMMs DDR0: Populate with 1 DIMM
DDR1: Populate identically as DDR0
1
Y, only Bank VLS
>1
Y
3 x4 DIMMs DDR0: Populate with 1 DIMM
DDR1: Populate identically as DDR0
DDR2: Populate identically as DDR1
1
Y, only Bank VLS
>1
Y
4 x4 DIMMs DDR0: Populate with 2 DIMMs
DDR1: Populate identically as DDR0
x
Y
5 x4 DIMMs DDR Channel 0, 1, 2: DIMM0 is populated with identical
DIMMs,
DDR Channel 0, 1: DIMM1 is populated with identical
DIMMs
>1
Y
6 x4 DIMMs Populate 2 DIMMs per DDR channel
x
Y
DIMM Population
within an IMC
Note: Non-equal
in rank pair of x4
DIMMs)
1 pair of
DIMMs
DDR0: Populate with 1 DIMM
DDR1: Populate the second DIMM (for best
performance)
>1
Y
2 pairs of
DIMMs
DDR0: Populate with 1 pair of non-equal rank DIMMs
DDR1: Populate identically as DDR0
>1
Y
3 pairs of
DIMMs
DDR0: Populate with 1 pair of non-equal rank DIMMs
DDR1: Populate identically as DDR0
DDR2: Populate identically as DDR1
x
Y
2 pairs+1
(5DIMMs)
DDR0: Populate with 1 pair of non-equal rank DIMMs
DDR1: Populate with identical DIMMs as DDR0
DDR2: DIMM0 is populated with identical DIMM as
DDR1
>1
Y
DDR4 Only 2SPC Memory Configuration with x8/x4 DIMMs Mixed
DDR4 RDIMM
Total # of
DIMMs
DDR Channel
ADDC/SDDC
Features
DIMM Population
within an IMC
1 pair of x8, x4
DDR0: Populate with 1 DIMM
DDR1: Populate the second DIMM (for best performance)
No
2 pairs of x8, x4 Populate with 1 pair of DIMMs on DDR0,
and identical pair on DDR1
No
3 pairs of x8, x4 A pair of DIMMs on DDR0, and identical pair on DDR1, and DDR2
No
