
4-GB DDR2 Synch Dram PC2-5300 (667-MHz) Non ECC (2 x 2GB)
X X X
8-GB DDR2 Synch Dram PC2-5300 (667-Mhz) Non ECC (4 x 2GB)
X X
* Ultra-slim Desktop uses SODIMM modules. Small Form Factor and Convertible Minitower use DIMM modules.
Expandability
ExpandabilityExpandability
Expandability
USDT
USDTUSDT
USDT
SFF
SFFSFF
SFF
CMT
CMTCMT
CMT
PCI slots
N/A
1 low-profile (2.5"), length (6.6")
standard;
2 full-height (4.2"), length (6.875")
via optional riser card.
NOTE:
NOTE: NOTE:
NOTE:
With riser card option,
PCIe x1 and PCIe x16 slots are
not accessible.
3 full-height (4.2"), length (13.4")
standard
Max power per slot
N/A
25W 25W
PCI Express x16 slot (Also
functions as SDVO/ADD2
Slot)
N/A
1 low-profile (2.5"), length (6.6")
1 full-height (4.2"), length (13.4")
Max power per slot
N/A
25W 75W
PCI Express x1 slot
N/A
2 low profile (2.5"), length (6.6")
2 full-height (4.2"), length (13.4")
Max power per slot
N/A
10W 10W
External Bays
1 Slimline (WxDxH):
128 x 127 x 12.7 mm
2 4
3.5"
N/A
1 1
5.25"
N/A
1 (length 8.189")
3 (2 – length 8.189", 1 – length
5.71")
Internal 2.5" HDD Bays
1
0 0
Internal 3.5" HDD Bays
0 1 2
Hard Drive Controller (PCI)
Supported
Serial ATA (support for SATA 1.5-Gb/s and 3.0-Gb/s hard drives)
Hard Drive and Optical
SATA Interfaces Supported
1 Serial ATA interface;
1 SATA to PATA converter
3 Serial ATA interfaces 4 Serial ATA interfaces
Ultra-slim Desktop
Ultra-slim DesktopUltra-slim Desktop
Ultra-slim Desktop
Small Form Factor
Small Form FactorSmall Form Factor
Small Form Factor
Convertible Minitower
Convertible MinitowerConvertible Minitower
Convertible Minitower
QuickSpecs
HP Compaq dc7800 Business PC
HP Compaq dc7800 Business PCHP Compaq dc7800 Business PC
HP Compaq dc7800 Business PC
Standard Features and Configurable Components
DA - 12744 North America — Version 2 — September 6, 2007
Page 12
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