Specifications

Hardware Setup
Intel
®
Server System SR1670HV Service Guide 17
2.3.2.1.1 Memory Population Rules
DIMM population requirements are dependent upon the number of slots per channel;
number of DIMMs installed; and rank type. When installing memory, consider the
following:
 Populate DIMMs by channel starting with the blue slot farthest from the CPU.
 All channels in a system will run at the fastest common frequency.
 RDIMMs and UDIMMs cannot be mixed.
 If two 1333 MHz-capable UDIMMs or RDIMMs is detected in the same channel, the
BIOS will flag this as a warning and force the speed down to 1066 MHz.
Table 8. Supported RDIMM Configurations
DIMM Slots
per Channel
DIMMs Populated
per Channel
DIMM Type Speeds Ranks per
DIMM
Population Rules
2 1 Registered
DDR3 ECC
800,
1066,
1333
SR or DR
2 1 Registered
DDR3 ECC
800, 1066 QR Only
2 2 Registered
DDR3 ECC
800, 1066 Mixing SR,
DR
2 2 Registered
DDR3 ECC
800 Mixing SR,
DR, QR
1. Any combination of x4 and x8
RDIMMs with 1Gb or 2Gb DRAM
density
 Does NOT support 256 Mb, 512 Mb, and 4 Gb DRAM technologies and x16 DRAM on
RDIMM.
 If a quad-rank RDIMM is mixed with a single-rank or dual-rank DIMM on a given
channel, you must populate the quad-rank DIMM in the lowest numbered slot.
Table 9. Supported UDIMM Configurations
DIMM
Slots per
Channel
DIMMs
Populated
per Channel
DIMM Type Speeds Ranks per DIMM Population Rules
2 1 Unbuffered DDR3
(with or without
ECC)
800,
1066,
1333
SR or DR
2 2 Unbuffered DDR3
(with or without
ECC)
800,
1066
Mixing SR, DR
1. Any combination of x8 UDIMMs
with 1 Gb or 2 Gb DRAM Density
 Does NOT support 256 Mb, 512 Mb, and 4 Gb DRAM technologies; x4 DRAM on
UDIMM and quad-rank UDIMM
 Mixing ECC and non-ECC UDIMMs anywhere on the platform forces the system to run
in non-ECC mode.
 No RAS support for non-ECC UDIMMs.
 No x4 SDDC support with UDIMM with ECC; however, x8 SDDC is supported in lock
step mode with x8 UDIMMs with ECC.
NOTE: Although non-ECC memory can be used in this server system, Intel does not plan to
validate them and strongly discourages their use in a working server environment.