Entry by Carlos S. M.
HP Compaq dc7800 CMT

HP Compaq dc7800 CMT Revision A03

Specifications

CPU support

Supported sockets:
  • LGA775
Front Side Bus speed: 800/1066/1333 MHz
Supported architectures:
  • Intel Celeron Conroe-L
  • Intel Celeron Dual-Core Allendale
  • Intel Celeron Dual-Core Wolfdale
  • Intel Core2 Duo Allendale
  • Intel Core2 Duo Conroe
  • Intel Core2 Duo Wolfdale
  • Intel Core2 Quad Kentsfield
  • Intel Core2 Quad Yorkfield
  • Intel Pentium Dual-Core Allendale
  • Intel Pentium Dual-Core Wolfdale
Note! Some steppings might require updated BIOS/microcode to work properly.

System memory

  • Type: DDR2 667/800 MHz
    2 memory channels on 4x 240-pin DIMM
Max supported: 8.00 GB

Platform

Northbridge/MCH: Intel Q35
Southbridge/ICH/PCH/MCP: Intel ICH9DO
SuperIO: SMSC SCH5327-NS
Intel GMA 3100 integrated graphics, with max 256 MB of System VRAM
Analog Devices AD1984 audio IC over HD Audio bus
Intel 825660M for 1G operation

Power supply

Main board power: 24-pin ATX
CPU power: 4-pin P4
1 3-pin DC fan header
1 4-pin PWM fan header

Expansion slots

3 PCI slots
1 PCIe x16 slot
2 PCIe x1 slots

Rear I/O ports

PS/2 keyboard
PS/2 mouse
6x USB 2.0 (480 Mb/s)
1x DE-9 serial
1x DB-25 parallel
1x RJ-45
VGA output
Audio connectors: Line out, Line in

Internal I/O headers

1x USB 2.0 (480 Mb/s)
1x RS232 serial
Header for front HD Audio

Storage

4 SATA-II (3 Gb/s) ports
Floppy connector, up to 2 drives

Circuit board

BTX form factor

Gallery

Attachments

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Disclaimer

The info you find here might not be 100% correct. This is due to a couple of reasons:
  • I'm an idiot and I misread/misspelled something
  • I have a different board revision from yours
  • The production date/plant is different and they might have used slightly different components
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