QuickSpecs
DIMM Size
Slot
Channel A
Channel B
1
(black)
2
(white)
3
(white)
4
(white)
512-MB
512-MB
1-GB
1-GB
2-GB
(dual-channel
symmetric)
1-GB
1-GB
4-GB
(dual-channel
symmetric)
1-GB 1-GB 1-GB 1-GB
8-GB
(dual-channel
symmetric)
2-GB 2-GB 2-GB 2-GB
16-GB maximum
(dual-channel symmetric)
4-GB 4-GB 4-GB 4-GB
* The Intel Q45 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.
USDT
SFF
CMT
Memory Configurations –
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
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
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
16-GB DDR2 Synch Dram PC2-6400 (800-Mhz) Non ECC (4 x 4GB)
X X
QuickSpecs
HP Compaq dc7900 Business PC
Standard Features and Configurable Components
DA - 13029 Canada — Version 29 — March 7, 2011
Page 13