Table 8. Supported Rdimm Configurations; Table 9. Supported Udimm Configurations - Intel SR1670HV - Server System - 0 MB RAM Service Manual

2.3.2.1.1
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.
DIMM Slots DIMMs Populated
per Channel per Channel
2 1
2 1
2 2
2 2
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.
DIMM DIMMs
Slots per Populated
Channel per Channel
2 1 Unbuffered DDR3
(with or without
ECC)
2 2 Unbuffered DDR3
(with or without
ECC)
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.
®
Intel Server System SR1670HV Service Guide
Memory Population Rules

Table 8. Supported RDIMM Configurations

DIMM Type Speeds
Registered 800,
DDR3 ECC 1066,
1333
Registered 800, 1066
DDR3 ECC
Registered 800, 1066
DDR3 ECC
Registered 800
DDR3 ECC

Table 9. Supported UDIMM Configurations

DIMM Type Speeds
800,
1066,
1333
800,
1066
Ranks per
DIMM
SR or DR 1. Any combination of x4 and x8
RDIMMs with 1Gb or 2Gb DRAM
density
QR Only
Mixing SR,
DR
Mixing SR,
DR, QR
Ranks per DIMM
SR or DR 1. Any combination of x8 UDIMMs
with 1 Gb or 2 Gb DRAM Density
Mixing SR, DR
Hardware Setup
Population Rules
Population Rules
17