HP Gtech G-Technology G-Drive Mobile 1 Tb External Hard Drive DC7800 manual Maximum Memory

QuickSpecs

HP Compaq dc7800 Business PC

Standard Features and Configurable Components

Small Form Factor and Convertible Minitower

Maximum Memory*	Supports up to 8 GB of DDR2 SYNCH DRAM. Slot 1 is black and must always be populated. Not all
	memory configurations possible are represented below.
	NOTE: For systems configured with more than 3 GB of memory and a 32-bit operating system, all
	memory may not be available due to system resource requirements.
	Addressing memory above 4 GB requires a 64-bit operating system.
DIMM Size			Slot
		Channel A		Channel B
	1 (black)		2 (white)	3 (white)	4 (white)
512-MB	512-MB
1-GB	1-GB
1-GB(dual-channel	512-MB			512-MB
symmetric)
2-GB(dual-channel	1-GB			1-GB
symmetric)
2-GB(dual-channel	512-MB		512-MB	512-MB	512-MB
symmetric)
4-GB(dual-channel	1-GB		1-GB	1-GB	1-GB
symmetric)
8-GB maximum	2-GB		2-GB	2-GB	2-GB
(dual-channel symmetric)

*The Intel Q35 Express chipset includes a built-in Management Engine (ME), which allocates memory for manageability functions. Management Engine memory is shared with system memory. If the PC contains a single DIMM, 16 MB of memory is pre-allocated for it at system startup. If the PC contains two DIMMs, 32 MB of memory is pre-allocated. This memory is not made available to the operating system, just as pre-allocated video memory is not available.

Memory Configurations –		USDT	SFF	CMT
One of the following*	512-MB DDR2 Synch Dram PC2-6400 (800-MHz) Non ECC (1 x 512)	X	X	X
	1-GB DDR2 Synch Dram PC2-6400 (800-MHz) Non ECC (1 x 1GB)	X	X	X
	1-GB DDR2 Synch Dram PC2-6400 (800-MHz) Non ECC (2 x 512)	X	X	X
	2-GB DDR2 Synch Dram PC2-6400 (800-MHz) Non ECC (1 x 2GB)	X	X	X
	2-GB DDR2 Synch Dram PC2-6400 (800-MHz) Non ECC (2 x 1GB)	X	X	X
	2-GB DDR2 Synch Dram PC2-6400 (800-MHz) Non ECC (4 x 512)		X	X
	3-GB DDR2 Synch Dram PC2-6400 (800-MHz) Non ECC (3 x 1GB)		X	X
	4-GB DDR2 Synch Dram PC2-6400 (800-MHz) Non ECC (4 x 1GB)		X	X
	4-GB DDR2 Synch Dram PC2-6400 (800-MHz) Non ECC (2 x 2GB)	X	X	X
	8-GB DDR2 Synch Dram PC2-6400 (800-MHz) Non ECC (4 x 2GB)		X	X
	512-MB DDR2 Synch Dram PC2-5300 (667-MHz) Non ECC (1 x 512)	X	X	X
	1-GB DDR2 Synch Dram PC2-5300 (667-MHz) Non ECC (1 x 1GB)	X	X	X
	1-GB DDR2 Synch Dram PC2-5300 (667-MHz) Non ECC (2 x 512)	X	X	X
	2-GB DDR2 Synch Dram PC2-5300 (667-MHz) Non ECC (1 x 2GB)	X	X	X
	2-GB DDR2 Synch Dram PC2-5300 (667-MHz) Non ECC (2 x 1GB)	X	X	X

DA - 12744 North America — Version 25 — May 16, 2008 Page 11