Reference Guide

System Memory Update for Dell
PowerEdge R715 and R815 systems
NOTE: The information provided in this document supersedes the information provided
in the Owner's Manual.
Table 1-1. PER715/PER815 Memory Rank Population Guidelines (Per Channel)
DIMM 1 DIMM 2 Maximum MHz,
1.5V DIMMs
Maximum MHz,
1.35V DIMMs
UDIMM
Single-Rank or
Dual-Rank
Empty 1600 MHz 1333 MHz
Single-Rank Single-Rank 1600 MHz 1333 MHz
Single-Rank or
Dual-Rank
Single-Rank or
Dual-Rank
1333 MHz 1333 MHz
RDIMM
Single-Rank or
Dual-Rank
Empty 1600 MHz 1333 MHz
Single-Rank Single-Rank 1600 MHz 1333 MHz
Single-Rank or
Dual-Rank
Dual-Rank 1333 MHz 1333 MHz
Quad-Rank Empty 1333 MHz 1066 MHz
Quad-Rank Single-Rank,
Dual-Rank, or
Quad-Rank
1066 MHz 800 MHz