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Low Voltage Memory Modules (DDR3L DIMMs)
Intel Xeon 5600 series processors support DDR3L DIMMs enabling a lower
operating voltage (1.35 V) that ensures memory power savings up to 20% per
DIMM. DDR3L memory is backward-compatible to Intel Xeon 5500 series and
operates at standard voltage (1.5 V) without any limitations.
Operating the system memory at a lower voltage may cause restrictions to
additional frequency and memory population capabilities. For example,
populating three memory modules per channel is not supported at 1.35 V.
Systems with 1.35 V DDR3L memory operates the memory modules at 1.5 V
if any of the following conditions exist:
•
Intel Xeon 5500 series processors
•
Two 1333 MHz DIMMs per channel
•
A combination of both standard and low voltage memory modules
For information on the memory configuration guidelines, see your system's
Hardware Owner's Manual at support.dell.com/manuals.
NOTE:
BIOS setup options allow the user to control frequency and voltage
configuration within allowable limits.
New BIOS Setup Options
Integrated Devices Screen
Option
SR-IOV-Global Enable
(Disabled default)
Memory Settings Screen
Option
System Memory Voltage
Memory Operating Voltage
(Auto Default)
Description
Enables/disables BIOS configuration of Single Root
I/O Virtualization (SR-IOV) devices.
NOTE:
Applies to PowerEdge R410, R510, R610, R710, R910,
T410, T610, and T710 systems only.
Description
Displays the system memory voltage.
Sets the system memory voltage selection.
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