Reference Guide

BIOS Settings Name Description Supported
Operating
System(s)
• Enable
Adjacent Cache Line Prefetch
Enables or disables the AdjacentCacheLinePrefetch feature.
Possible values are:
• Enabled — CPU fetches the adjacent cache line in the other
half of the sector.
• Disabled — CPU only fetches the cache line that contains
the data currently required by the CPU.
Microsoft Windows,
Linux
CPU RSA
Enables or disables the Reliability Availability Serviceability (RSA)
support on CPUs.
Possible values are:
• Disable
• Enable
Microsoft Windows,
Linux
CPU Snoop Mode
Configures the CPU snoop mode.
Possible values are:
• Early snoop — Enables early snoop mode. Use this mode for
latency-sensitive applications that do not require high
remote bandwidth.
• Home snoop — Enables home snoop mode. Use this mode
for applications that require high memory bandwidth.
• Cluster on Die — Enables cluster on die mode. Dell
recommends this mode for NUMA-optimized applications to
achieve lowest local memory latency, and highest local
memory bandwidth.
• Opportunistic Snoop — Enables opportunistic snoop mode.
Directory with Opportunistic Snoop Broadcast (OSB) offers
a good balance of latency and bandwidth.
• No snoop — Enables no snoop mode.
Microsoft Windows,
Linux
CPU Virtualization Technology
Enables or disables CPU Virtualization.
Possible values are:
• Disable
• Enable
Microsoft Windows
Deep Sleep Control Configures the system power mode when the system is in S4
and S5 state. If set to S5only, the system moves to the lowest-
Power Off mode only in S5 state. If set to S4 and S5 state, the
system moves to the lowest-Power Off mode in both S4 and S5
states. When the system is in low-power mode, it turns off most
of the power-consuming circuitry, to meet the 1 W power limit. It
disables PME, USB power, etc.
Possible values are:
• S5 only
• S4 and S5
• Disable
Microsoft Windows,
Linux
Dell Reliable Memory Technology Configures the system to detect and correct the software errors
in a block of RAM. When enabled, the system detects and
corrects the software errors.
Possible values are:
• Disable
Microsoft Windows,
Linux
252 BIOS settings supported in Dell Command | Monitor 10.2.1