Up to 4096 MB of 667-MHz DDR2 SDRAM
Two DIMM slots
DIMM sizes supported: 512 MB, 1024 MB, and 2048 MB
Standard Memory
512 MB (512 MB x 1)
1024 MB (1024 MB x 1 or 512 MB x 2)
2048 MB (2048 MB x 1 or 1024 MB x 2)
Optional Memory
Upgrades
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.
Up to
Slot 1 Slot 2
1024 MB 1024 MB
Empty
1024 MB
512 MB 512 MB
1536 MB 1024 MB
512 MB
2048 MB 1024 MB 1024 MB
4096 MB 2048 MB 2048 MB
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. Full availability of 4 GB of memory requires Windows Vista Business 64-bit or Linux. With
Windows 32-bit operating systems, the amount of usable memory is dependent upon your configuration,
so that above 3 GB all memory may not be available due to system resource requirements.
Memory Upgrades
HP 512-MB (DDR2 667 MHz) SODIMM
EM993AA
HP 1024-MB (DDR2 667 MHz) SODIMM
EM994AA
HP 2048-MB (DDR2 667 MHz) SODIMM
EM995AA
QuickSpecs
HP Compaq 6820s Notebook PC
Memory
DA - 12768 Worldwide QuickSpecs — Version 9 — 4.7.2008
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