HP Compaq nx8420 Quickspecs page 18

QuickSpecs
Memory
Supports up to 4096 MB* of 533-MHz or 667-MHz DDR2 SDRAM
Two DIMM slots
DIMM sizes supported: 512 MB, 1024 MB, and 2048 MB
Standard Memory
Optional Memory
Upgrades
Up to
512 MB
1024 MB
1024 MB
1280 MB
1536 MB
2048 MB
4096 MB
Memory Upgrades
* Above 3-GB, all memory may not be available due to system resource requirements.
512 MB (512 MB x 1 or 256 MB x 2)
1024 MB (1024 MB x 1 or 512 MB x 2)
2048 MB (1024 MB x 2)
4096 MB* (2048 MB x 2)
Support for up to 4096 MB* of memory is available (with the installation of optional DDR2 SDRAM memory
kits). Both 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.
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.
512-MB 533-MHz DDR2 SDRAM
1024-MB 533-MHz DDR2 SDRAM
512-MB 667-MHz DDR2 SDRAM
1024-MB 667-MHz DDR2 SDRAM
2048-MB 667-MHz DDR2 SDRAM
DA - 12442 North America — Version 15 — July 16, 2007
HP Compaq nx8420/nc8430 Notebook PCs
Slot 1
512 MB
1024 MB
512 MB
1024 MB
1024 MB
1024 MB
2048 MB
Slot 2
Empty
Empty
512 MB
256 MB
512 MB
1024 MB
2048 MB
PE831A
PE832A
EM993AA
EM994AA
EM995AA
Page 18