Specifications

19 PowerEdge R420 Technical Guide
Memory speed
The R420 supports memory speeds of up to 1600MT/s, depending on DIMM types installed and
configuration. The loading within a channel significantly affects memory speed.
Table 9 illustrates the maximum achievable speed of the Intel Xeon processor E5-2400 E5-2400
and E5-2400 v2 product families based on memory loads.
 Green boxes are defaults for performance per watt
 White boxes (with lower voltage) can save power but will run at slower speeds
 White boxes (with higher voltage) can be custom configured in the bios
Table 9. Memory speed capabilities
DIMM
type
DIMM
rank
DIMM-rated voltage
and speed
Intel Xeon processor E5-2400
and E5-2400 v2 product
families
DIMMs per channel (DPC)
1 DPC
2 DPC
1.35V
1.5V
1.35V
1.5V
RDIMM
1R/2R
DDR3L (1.5V)
1600MT/s
1600
1600
1600
1600
RDIMM
1R/2R
DDR3L (1.35V/1.5V)
1333MT/s
1333
1333
1333
1333
UDIMM
1R/2R
DDR3L (1.35V/1.5V)
1600MT/s
1600
1600
1600
1600
RDIMM
4R
DDR3L (1.35V/1.5V)
1333MT/s
1066
1333
1066
1066
LRDIMM
4R
DDR3L (1.35V/1.5V)
1333MT/s
Memory RAS features
RAS features help keep the system online and operational without significant impact to performance,
and can decrease data loss and crashing due to errors. RAS aids in rapid, accurate diagnosis of faults
that require service. Table 10 describes the RAS features supported on the R420.
Table 10. Memory RAS features
Feature
Description
Dense configuration
optimized profile
Increased memory reliability can be a result from this selectable platform profile
that adjusts parameters to reduce faults regarding refresh rates, speed,