Ultra-slim Desktop
Maximum Memory
*
Supports up to 8 GB of DDR2 SYNCH DRAM using SO-DIMM modules. 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.
SO-DIMM Size
Slot
Channel A Channel B
1
(black)
2
(white)
512-MB
512-MB
1-GB
1-GB
2-GB
(dual-channel symmetric)
1-GB 1-GB
4-GB
(dual channel symmetric)
2-GB 2-GB
8-GB maximum
(dual channel
symmetric)
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 SO-DIMM, 16 MB of
memory is pre-allocated for it at system startup. If the PC contains two SO-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.
Small Form Factor and Convertible Minitower
Maximum Memory
*
Supports up to 16 GB of DDR2 SYNCH DRAM using DIMM modules. 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
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.
QuickSpecs
HP Compaq dc7900 Business PC
Standard Features and Configurable Components
DA - 13029 Worldwide QuickSpecs — Version 24 — 10/30/2009
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