Dell Precision Tower 7810 - Manual

Statement of Volatility – Dell Precision Tower
5810/7810/7910
CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the
problem.
The Dell Precision Tower 5810/7810/7910 contains both volatile and non-volatile (NV) components. Volatile
components lose their data immediately upon removal of power from the component. Non-volatile
components continue to retain their data even after the power has been removed from the component:
List below contains volatile and non-volatile memory ICs used in Dell Precision Tower 5810/7810/7910.
Description
Reference
Designator
Volatility Description
User
Accessible for
external data Remedial Action
(action necessary
to lose data)
Embedded
Flash
memory in
embedded
controller UO1 256 K bytes non-volatile memory
space.
8.25 K bytes volatile memory space No N/A
System BIOS SPI_1 Non Volatile memory, 16 MByte,
System BIOS and Video BIOS for
basic boot operation, PSA (on-
board diags), PXE diags. No N/A
TPM UF1 Encrypted user keys generated by the
TPM device for use by the security
software are stored in this NVM. No N/A
System
Memory –
DDR4 DIMM
memory Connectors:
DIMM1, DIMM2 Volatile memory in OFF state (see
state definitions later in text).
Yes Power off system.
System
EEPROM
(only for
Precision
Tower 7910) On memory
DIMM(s) –
one, two,
present Non-volatile EEPROM memory. 32
Mbit device. One Device present on
each DIMM.
Stores memory-manufacturer data
and timing information for correct
operation of system memory. No N/A
PCH CMOS
US1H Volatile battery back-backed CMOS
memory 256 bytes. Stores CMOS
information. No Removing the on
board coin-cell
battery.
Video
memory –
type UMA
architecture-
uses system
DDR3. Volatile memory in off state.
UMA uses main system memory size
allocated out of main memory. No Enter S3-S5 state
below.
May 2014