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HP Pavilion 7855 Desktop PC Product Specifications and What Ships in the Box

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Worldwide introduction date

5-March-2001: USA and Canada (including Quebec)

Model number

  • P3930A

Base processor and speed

  • Intel Pentium (R) III / 1 GHz Processor
    • Socket 370
    • 133 MHz FSB (Front Side Bus)

Motherboard manufacturer

  • ASUS


  • Intel 810E

Chassis physical measurement

Height 15 1/2
Depth 15 1/4
Width 8 1/4


RAM (standard) 128 MB RAM PC100
Maximum 512 MB (2x256 MB DIMM)
Speed 100 MHz synchronous
Sockets 2 - 168 pins DIMMs
Size 32, 64, 128, and 256 MB DIMMs
Free DIMM Sockets 1
Pairs Required No
Type Supported SDRAM, Intel PC SDRAM unbuffered DIMM specification, revision 1.0 compliant
NOTE: Free DIMM slots may vary due to availability of memory components at the time the PC is manufactured.


Level 1 32 KB (on processor)
Upgrade Sockets None
Level 2 256 KB (on processor)

Hard drive

  • 60 GB (3.5” form factor)

CD-RW Drive

Speed Write: 8x

Rewrite: 4x

Read: 32x
CD-Read Access Speed 150 ms
CD-Read Transfer Rate (read/write (KB/sec) 150-175 (1x read/write)

300-350 (8x read/write)

600-700 (4x read/write)

1200-1400 (8x read only

3600-4100 (10x-32x read only)


Speed 12x
Access Speed 120 - 180 ms
Transfer Rate 5.52-8.1 MB/sec

Network Interface Card

  • HP 10/100 BaseT LAN Adapter (Ethernet)

Fax/data modem

Modem V.90 56 Kbps (Cheetah)
Manufacturer Smart / Lucent
Data speed 56 Kbps
Fax speed Up to 14.4 Kbps
Plug and Play Yes
Hayes Compatible Yes
Data compression v .42 bis
Error correction v .42
Com Port (default) 2
IRQ (default) Variable
EIA fax commands Class 1

Video graphics

PCI Local Bus Controller Intel 810E
Video Memory 11 MB shared, integrated graphics, not upgradeable
Feature connector (game/joystick) Yes
Resolutions (video resolutions dependent upon specific display used)
640 x 480 16/256/32K/64K/16.7M colors
800 x 600 16/256/32K/64K colors
1024 x 768 16/256/32K/64K colors
1280 x 1024 256 colors

MPEG-1/2 (for playback)

  • MPEG – 2 for full-screen, full motion digital video


Compatibility 3-D Stereo, PCI, 16-bit Sound
Controller AMC97 Codec
Location Crystal Sound Chip (on motherboard)
Noise Cancellation Yes
Line Out Yes
3-D Spatializer Yes
Wavetable Yes
Tone Control No
Microphone With HP Pavilion Multimedia Display

External ports


Port TypeQuantity
Serial 2
Parallel 1
Game 1

Ports on front panel

Port TypeQuantity
Serial 1

Expansion slots


Slot TypeQuantity


Slot TypeQuantity

Drive bays


Bay TypeQuantity
3.5-inch, internal 2
5.25-inch, external 2
3.5-inch, external 1


Bay TypeQuantity
3.5-inch, internal 1

System power

AC Input

  • 185W max
  • Input Frequency: 43/66 Hz
  • Voltage: 120V - 230V
  • Maximum output wattage: 124W or 149W

Power supply output

DC VoltageCurrent
+12V 4.0 A
+5V 25.0 A
+3.3V 16.0 A
-5V 0.3 A
-12V 0.5 A


  • HP/Polk Audio “F” stereo speakers (left and right)


  • HP One-Touch multimedia keyboard (Horn)
  • HP PS/2 2-button scroller mouse

Supported operating systems (OS/NOS)

  • Microsoft (R) Windows Millennium Edition
    NOTE: The only operating system supported on this HP Pavilion PC is Windows Millennium Edition.

Software Build ID / BIOS

  • Software Build ID: Tortuga3-GA/Cognac3-GA 12NARCKT04
Date: 05-Mar-01

Complete software package

NOTE: The following software is preloaded on the hard disk drive and can be reloaded by using the HP Recovery Kit CDs.

Operating system

  • Microsoft Windows Millennium Edition


  • Microsoft Works 6.0
  • Microsoft Money 2001
  • Trellix Web by Trellix


  • Microsoft Encarta 2001 Encyclopedia Deluxe Online


  • EMusic icon/weblink
  • MusicMatch Jukebox by MusicMatch
  • Real Audio Player by Real Networks
  • Direct CD by Adaptec
  • Easy CD Creator by Adaptec
  • DVD 2000 by InterVideo

Internet and Online

  • America Online
  • AT&T WorldNet
  • CompuServe WinCim
  • Disney’s Blast Online
  • Earthlink
  • GTE
  • HP At Home Owners Website/Customized Browser
  • HP Internet Connection Center
  • Mindspring
  • NetCOMplete by NETCOM
  • PRODIGY Internet Service

Service and Support Software

  • Backweb InfoExpress Client
  • Electronic Registration
  • HP Pavilion Recovery Kit
  • HP Pavilion User’s Guide
  • VirusScan by McAfee

What ships in the box


  • HP One-touch multimedia keyboard (Horn)
  • HP PS/2 two-button scroller mouse
  • HP/Polk Audio “F” stereo speakers (left and right)
  • Phone cable
  • Power cord


  • CD Collection Kit **
    • MS Works 2000
    • MS Money 2001
    • MS Encarta 2000 Encyclopedia (French-Canadian models only)
  • HP Recovery Kit (3 CDs)** includes:
    • 2 Recovery CDs
    • 1 Application Recovery CD


  • HP Pavilion User’s Guide (installed on PC)
  • HP Quick Start Guide
  • HP Upgrading and Servicing the PC
  • HP Setup Poster
  • Support Path Card
  • MS Me Quick Start Guide
  • Warranty Sheet
** Replacement of missing or damaged manuals and software covered under Warranty. See section below for warranty and usage coverage.

Product warranty

USA and Canada

Unit Exchange – service is provided by an HP authorized partner

Self Repair
One Year

One Year
Phone Support – HP bundled hardware and HP pre-installed bundled software One Year
Replace Recovery CD One Year
Replace Manuals and Software 90 days

HP Support forums

Find solutions and collaborate with others on the HP Support Forum
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