HP 4425S manual Standard Memory, Optional Memory, Memory Upgrades

QuickSpecs

HP ProBook 4425s Notebook PC

Memory

DDR3 PC3-10600 SDRAM (1066/1333MHz)*

Two SODIMM slots supporting dual-channel memory

SODIMM sizes supported: 1024 MB, 2048 MB and 4096 MB

Standard Memory	1024 MB (1024 MB x 1)
	2048 MB (2048 MB x 1)
	2048 MB (1024 MB x 2)
	3072 MB (2048 MB + 1024 MB)
	4096 MB (2048 MB x 2)
	4096 MB (4096 MB x 1)
Optional Memory	Support for up to 8192 MB of memory with the installation of optional DDR3 SDRAM memory kits. Both
Upgrades	memory slots are user accessible. Please refer to the Hardware and Software Guide for installation
	procedures. Maximized dual-channel performance requires SODIMMs of the same size and speed in
	both memory slots.
Up to		Slot 1	Slot 2
2048 MB		1024 MB	1024 MB
2048 MB		2048 MB	empty
3072 MB		2048 MB	1024 MB
4096 MB		2048 MB	2048 MB
4096 MB		4096 MB	empty
8192 MB		4096 MB	4096 MB

* Memory speed is processor dependent.

NOTE: This chart does not represent all possible memory configurations. Due to the non-industry standard nature of some third- party memory modules, we strongly recommend using only HP branded memory modules to ensure compatibility. If you mix memory speeds, the system will perform at the lower memory speed. Availability of 4 GB or more of memory requires a Windows 64-bit operating system or Linux. With Windows 32-bit operating systems, memory above 3 GB may not all be available due to system resource requirements.

Memory Upgrades	HP 1 GB (DDR3 1333 MHz) SODIMM	AT911AA
	HP 2 GB (DDR3 1333 MHz) SODIMM	AT912AA
	HP 4 GB (DDR3 1333 MHz) SODIMM	AT913AA

DA - 13610 North America — Version 10 — November 23, 2010 Page 13