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Information About Your Computer

Dell Precision™ Workstations 450 and 650 User's Guide

  Finding Information for Your Computer

  Specifications

  Caring for Your Computer

Finding Information for Your Computer

What Are You Looking For?	Find it Here
A diagnostic program for my computer Drivers for my computer My User's Guide My device documentation	Drivers and Utilities CD (also know as the ResourceCD) You can use this CD to access documentation, reinstall drivers, or run diagnostics tools.
How to set up my computer How to care for my computer Troubleshooting information How to open my computer cover How to locate other documentation	Setup and Quick Reference Guide
Express Service Code and Service Tag Number Microsoft® Windows® License Label	Express Service Code and Product Key Located on your computer.
System board connectors Location of system board components	System Information Label Located on the inside cover of your computer.
How to remove and replace parts Technical specifications How to configure system settings How to troubleshoot and solve problems	User's Guide Icon (Microsoft Windows 2000) Double-click the User's Guides icon on your desktop. Windows XP Help and Support Center Click the Start button, and click Help and Support. Click User's Guide.
Warranty Information	System Information Guide
Latest drivers for my computer Answers to technical service and support questions Online discussions with other users and technical support Documentation for my computer including the Service Manual	Dell Support Website — support.dell.com The Dell Support website provides several online tools, including: Knowledge Base — hints, tips, and online courses Customer Forum — online discussion with other Dell customers Upgrades — upgrade information for components, such as memory, the hard drive, and the operating system Customer Care — contact information, order status, warranty, and repair information Downloads — drivers, patches, and software updates Reference — computer documentation, product specifications, and white papers
Service call status and support history Top technical issues for my computer Frequently asked questions File downloads Details on my computer's configuration Service contract for my computer	Dell Premier Support Website — premiersupport.dell.com The Dell Premier Support website is customized for corporate, government, and education customers. This site may not be available in all regions.
How to reinstall my operating system	Operating System CD and Installation Guide After you reinstall your operating system, use the Drivers and Utilities CD to reinstall drivers for the devices that came with your computer.
How to use Windows XP Documentation for my computer and devices	Windows XP Help and Support Center Click the Start button, and then click Help and Support. Type a word or phrase that describes your problem, and then click the arrow icon. Click the topic that describes your problem. Follow the instructions shown on the screen. NOTE: For help using Windows 2000, click the Start button and click Help.

Specifications

Microprocessor
Microprocessor type	Intel® Xeon™
Level 1 (L1) cache	8 KB
Level 2 (L2) cache	512-KB

Memory
Type	PC2100 DDR
Memory connectors	four
Memory capacities	256-, 512-MB, and 1-GB non-ECC or ECC
Minimum memory	256 MB
Maximum memory	4 GB
BIOS address	F0000h

Computer Information
Chip set	Intel E7505
Data bus width	64 bits
Address bus width	32 bits
DMA channels	8
Interrupt levels	23
BIOS chip	4-Mb
Memory speed	266 MHz DDR (PC 2100 DDR)
NIC	Gigabit integrated network interface with ASF support as defined by DMTF Capable of 10/100/1000 communication Green — A good connection exists between a 10-Mbps network and the computer. Orange — A good connection exists between a 100-Mbps network and the computer. Yellow — A good connection exists between a 1 Gb (or 1000-Mbps) connection. Off — The computer is not detecting a physical connection to the network.
SCSI controller	Dell Precision 650 computer — Integrated U320 SCSI Dell Precision 450 computer — Optional add-in U320 SCSI
FSB clock	400- or 533-MHz data rate

Video
Type	Dell Precision 650 computer — AGP Pro 110 at 8x/4x/2x/1x (1.5 V) or PCI Dell Precision 450 computer — AGP Pro 50 at 8x/4x/2x/1x (1.5 V) or PCI

Audio
Type	AC97, Sound Blaster emulation
Audio controller	Analog Devices Codec AD1981b
Stereo conversion	16-bit analog-to-digital; 20-bit digital-to-analog

Expansion Bus
Bus type	Dual PCI-X 1.0 (3.3 V only), PCI 2.2 (3.3 V/5.0 V) AGP Pro 3.0 (1.5 V only)
Bus speed	PCI: 33 MHz; PCI-X: 66/100 MHz AGP Pro: 66 MHz
Expansion-card connectors:	Dell Precision 650 computer — Three PCI-X connectors, two PCI slots, and one AGP 8x Pro110 connector Dell Precision 450 computer — One PCI-X connector, two PCI slots, and one AGP 8x Pro50 connector

Drives
Externally accessible:
Dell Precision 650 computer	one 3.5-inch drive bay three 5.25-inch drive bays
Dell Precision 450 computer	one 3.5-inch drive bay two 5.25-inch drive bays
Internally accessible:
Dell Precision 650 computer	three bays for three 1-inch high or two 1.6-inch high hard drives NOTE: You can purchase a conversion bracket from Dell that allows you to use a 5.25-inch drive bay as an additional hard drive bay.
Dell Precision 450 computer	two bays for two 1-inch high or one 1.6-inch high hard drives

Connectors
External connectors:
Serial	two 9-pin connectors; 16550-compatible
Parallel	one 25-hole connector (bidirectional)
IEEE 1394	Dell Precision 650 computer only — Two 6-pin serial connectors
Video	15-hole connector (on add-in video card)
Network connector	RJ45 connector
PS/2 (keyboard and mouse)	6-pin mini-DIN connector
USB	two USB 2.0-compliant connectors on the front panel; four USB 2.0-compliant connectors on the back panel
Audio	Dell Precision 650 computer— Three connectors for line-in, line-out, and microphone on back panel; one speaker/headphone and one microphone connector on the front panel Dell Precision 450 computer— Three connectors for line-in, line-out, and microphone on back panel; one speaker/headphone on the front panel
System Board Connectors:
Primary IDE channel	40-pin connector
Secondary IDE channel	40-pin connector
Floppy drive	34-pin connector
SCSI	68-pin connector (Dell Precision 650 computer only)
CD drive audio interface	4-pin connector
Telephony (TAPI)	4-pin connector
Fans (3)	3-pin connector
I/O panel	34-pin connector
USB/IEEE 1394	16-pin connector

Key Combinations
<F2>	starts embedded system setup (during start-up only)
<F12>	changes boot sequence (during start-up only)
<Ctrl><Alt><F10>	launches the utility partition (if installed) during computer start-up
<Ctrl><Enter>	disables computer password at start-up (after correct password is entered)

Controls and Lights
Power control	push button
Power light	green light; blinking green in sleep state; dual-color for computer operations —green for power, yellow for diagnostics
Hard-drive access light	green
Link integrity light (on integrated network connector)	green light for 10-Mb operation; orange light for 100-Mb operation; yellow light for 1,000-Mb (1-Gb) operation
Activity light (on integrated network connector)	yellow blinking light
Diagnostic lights	four lights located on the front panel

Power
DC power supply:
Wattage	Dell Precision 650 computer: 460 W Dell Precision 450 computer: 360 W
Heat dissipation	Dell Precision 650 computer: 1000 BTU/hr Dell Precision 450 computer: 910 BTU/hr
Voltage	90 to 135 V at 50/60 Hz; 180 to 265 V at 50/60 Hz
Backup battery	3-V CR2032 lithium coin cell

Physical
Dell Precision 650 computer
Height	49.1 cm (19.3 inches)
Width	22.2 cm (8.7 inches)
Depth	48.8 cm (19.2 inches)
Weight	19 kg (42 lbs)
Dell Precision 450 computer
Height	16.5–16.8 cm (6.5–6.6 inches)
Width	44.7 cm (17.6 inches)
Depth	44.5 cm (17.5 inches)
Weight	18.6 kg (41 lbs)
Supported monitor weight (in desktop orientation)	45.4 kg (100 lbs)

Environmental
Temperature:
Operating	10° to 35°C (50° to 95°F) NOTE: At 35°C (95°F), the maximum operating altitude is 914 m (3000 ft).
Storage	–40° to 65°C (–40° to 149°F)
Relative humidity	20% to 80% (noncondensing)
Maximum vibration:
Operating	0.25 G at 3 to 200 Hz at 0.5 octave/min
Storage	0.5 G at 3 to 200 Hz at 1 octave/min
Maximum shock:
Operating	bottom half-sine pulse with a change in velocity of 50.8 cm/sec (20 inches/sec)
Storage	Dell Precision 650 comptuer: nonoperating (half-sine pulse) 105 G, 2 ms nonoperating (faired-square wave) 27 G with a velocity change of 508 cm/sec (200 inches/sec) Dell Precision 450 computer: nonoperating (half-sine pulse) 105 G, 2 ms nonoperating (faired-square wave) 32 G wtih a velocity change of 596 cm/sec (200 inches/sec)
Altitude:
Operating	–15 to 3048 m (–50 to 10,000 ft) NOTE: At 35°C (95°F), the maximum operating altitude is 914 m (3000 ft).
Storage	–15 to 10,600 m (–50 to 35,000 ft)

Caring for Your Computer

To help maintain your computer, follow these suggestions:

• To avoid losing or corrupting data, never turn off your computer when the hard drive light is on.
  
  
• Schedule regular virus scans using virus software.
  
  
• Manage hard drive space by periodically deleting unnecessary files and defragmenting the drive.
  
  
• Back up files on a regular basis.
  
  
• Periodically clean your monitor screen, mouse, and keyboard (see "Cleaning Your Computer").
  
  

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