HP Compaq dc7900 USDT Technical Reference Manual page 19

Table 2-1 shows the differences in features between the different PC series based on form factor:
Feature Difference Matrix by Form Factor
Processor types supported
Processor wattage (max)
Memory:
# & type of sockets
Maximum memory
Serial ports
Parallel ports
Drive bays:
Externally accessible
Internal
Drive types supported
PCIe slots:
x16 graphics (PCIe 2.0)
x1 connector
x4 (x16 connector)
PCI 2.3 32-bit 5-V slots
Power Supply Unit:
Module type
power rating
NOTES:
[1] 2nd serial port requires optional cable/bracket assembly.
[2] PCIe Mini Card slot.
[3] Supports low-profile card in standard configuration. Not accessible if PCI riser card field option
is installed.
[4] Accepts low-profile PCIe card: height = 2.5 in., length = 6.6 in.
[5] Full-height PCI slots require installation of PCI riser card field option (full-height dimensions: height
= 4.2 in., length = 6.875 in).
Technical Reference Guide
Table 2-1
USDT
Intel Celeron, Intel Celeron,
Pentium dual-core, Pentium dual-core,
Core 2 Duo Core 2 Duo,
Core 2 Quad
65 W 95 W
2 SODIMM 4 DIMM
8 GB 16 GB
0 1 std., 1 opt. [1]
0 optional
1
1
1 HDD, 2 HDDs,
1 slimline ODD 1ODD,
RAID1
0 1 [3, 4]
1 [2] 1 [3]
1 [3, 4]
0 1 half-height
2 full-height [5]
external internal
135-watt 240-watt
www.hp.com
SFF CMT
Intel Celeron,
Pentium dual-core,
Core 2 Duo,
Core 2 Quad
95 W
4 DIMM
16 GB
1 std., 1 opt. [1]
optional
2 4
1 2
2 HDDs,
2 ODDs,
RAID1
1
1
1
3
or full-height
internal
365-watt
System Overview
2-3