Technical Product Specification

Intel® Server Board S5520UR and S5520URT TPS Functional Architecture
Revision 1.9 Intel order number E44031-012
23
DIMM Type
DIMM
Populated Per
Channel
Memory Running Frequency
(Y/N)
Command/Addres
s Rate
Ranks Per DIMM
SR: Single-Rank
DR: Dual-Rank
QR: Quad-Rank
Description
800MHz
1066MHz
1333MHz
w or w/o
ECC
when two UDIMMs (Single- or Dual-Rank)
are installed in the same channel.
Note:
1. One clock cycle for the DRAM commands arrive at the DIMMs to execute.
2. Two clock cycles for the DRAM commands arrive at the DIMMs to execute.
Table 6. Memory Running Frequency vs. Memory Population for Intel
®
Xeon
®
5600 series processor
DIMM Type
DIMM
Populated Per
Channel
Memory Running Frequency
(Y/N)
Command/Addre
ss Rate
Ranks Per DIMM
SR: Single-Rank
DR: Dual-Rank
QR: Quad-Rank
Description
800MHz
1066MHz
1333MHz
RDIMM
1.5V w/ ECC
1 Y Y Y 1N SR or DR
All RDIMMs run at the fastest common
frequency of processor IMCs and
installed memory: 800 MHz, 1066 MHz,
or 1333 MHz
RDIMM
1.5V w/ ECC
1 Y Y N 1N QR Only
All RDIMMs run at 800 MHz or 1066 MHz
when Quad-Rank RDIMM installed in any
channel.
RDIMM
1.5V w/ ECC
2 Y Y Y 1N Mixing SR , DR
All RDIMMs run at the fastest common
frequency of processor IMCs and
installed memory: 800 MHz, 1066 MHz,
or 1333 MHz
RDIMM
1.5V w/ ECC
2 Y N N 1N
Mixing SR , DR ,
QR
All RDIMMs run at the fastest common
frequency of processor IMCs and
installed memory: 800 MHz
RDIMM
DDR3L
1.35V w/
ECC
1 Y Y Y 1N SR or DR
All RDIMMs run at the fastest common
frequency of processor IMCs and
installed memory: 800 MHz, 1066 MHz,
or 1333 MHz
RDIMM
DDR3L
1.35V w/
ECC
1 Y N N 1N QR Only
All RDIMMs run at the fastest common
frequency of processor IMCs and
installed memory: 800 MHz
RDIMM
DDR3L
2 Y Y N 1N Mixing SR , DR
All RDIMMs run at the fastest common
frequency of processor IMCs and