User Manual
21 PowerEdge R620 Technical Guide
Table 10 illustrates the maximum achievable speed of the Intel Xeon processor E5-2600 and
E5-2600 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 10. Memory speed capabilities
DIMM
type
DIMM
rank
Intel Xeon processor E5-2600 and E5-2600 v2
product families
DIMMs per channel (DPC)
1 DPC
2 DPC
3 DPC
1.35V
1.5V
1.35V
1.5V
1.35V
1.5V
RDIMM
1R/2R
1866
1866
1333
RDIMM
1R/2R
1600
1600
1600
1600
1066
1333
UDIMM
1R/2R
1600
1600
1600
1600
RDIMM
4R
1066
1333
1066
1066
LRDIMM
4R
1866
1600
1333*
LRDIMM
4R
1600
1600
1600
1600
1066
1333*
*For PowerEdge T620, the speed will clock down to 1066MT/s.
Memory RAS features
Reliability, availability and serviceability (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 which require service. Table 11 describes the RAS
features supported on the R620.
Table 11. Memory RAS features
Feature
Description
Dense configuration
optimized profile
Increased memory reliability can result from this selectable platform profile, which
adjusts parameters to reduce faults regarding refresh rates, speed, temperature
and voltage.
Memory demand and
patrol scrubbing
Demand scrubbing is the ability to write corrected data back to the memory once
a correctable error is detected on a read transaction.
Patrol scrubbing proactively searches the system memory, repairing correctable
errors.
Recovery from single
DRAM device failure
Recovery from Single DRAM Device Failure (SDDC) provides error checking and
correction that protects against any single memory chip failure as well as multi-bit
errors from any portion of a single memory chip.
Failed DIMM isolation
This feature provides the ability to identify a specific failing DIMM channel pair,
thereby enabling the user to replace only the failed DIMM pair.