Dell Precision 390 Workstation:

Dual-core Intelо Core 2 Extreme with 1066MHz FSB, 4MB L2 cache, XD, VT, EIST
Dual-core Intel Core 2 Duo with 1066MHz FSB, up to 4MB L2 cache, XD, VT, EIST
Single-core Intel Pentiumо 4 with 800MHz FSB, 2MB L2 cache, HT, XD, EIST (6xx series)
All processors support 64-bit computing with Intel EM64T
Dell recommends Windowsо XP Professional
Genuine Windows XP Professional and Windows XP Professional x64 Edition; Dell offers systems which run Genuine Windowsо XP and are capable of running Windowsо Vista™ 4 ;Red Hatо Enterprise Linux WS v.4 (IA32); Red Hat Enterprise Linux WS v.4 (Intel EM64T)
Intel 975X Express chipset
Four DIMM slots support up to 8GB3 dual-channel5 DDR2 533 or 667MHz non-ECC and ECC memory
8MB flash memory for system BIOS; SMBIOS 2.3.1 support
Support for PCI Express x16 graphics cards up to 150 watts and with up to 512MB graphics memory including: NVIDIA Quadroо FX 4500; NVIDIA Quadro FX 3500; NVIDIA Quadro FX 3450; ATI™ FireGL™ 7200; NVIDIA Quadro FX550; ATI FireGL V3400; NVIDIA Quadro NVS 285. All graphics cards support dual monitor configurations
SATA 3.0Gb/s: 7200RPM with 8MB DataBurst Cache™ up to 750GB2, 10K RPM with 16MB DataBurst Cache up to 160 GB2SAS: 10K RPM up to 300GB2, 15,000RPM up to 146GB2 (requires SAS 5/iR controller card)
Chassis supports up to four internal SATA drives (2.0TB2 storage maximum) or three SAS drives
Optional: DVD+/-RW6; CD-RW/DVD Combo; CD-RW; DVD-ROM7; CD-ROM; USB media card reader; USB Floppy Drive; Dell USB Memory Keys upto 512MB8
Integrated SATA 3.0Gb/s controller with support for RAID 0, 1, 5 and 10; optional SAS 5/iR controller card for SAS RAID 0, 1
Integrated Broadcomо 5754 Gigabit9 Ethernet controller with Remote Wake Up and PXE support
Integrated High Definition Audio (Rev 1.0 Specification) with Sigmatel STAC9200 High Definition Audio CODEC and Intel ICH7R AC97/ High Definition digital controller
Sound Blasterо X-Fi™ XtremeMusic (D)10 with Dolbyо Digital 5.1
Dell 56K11 v.92 Data/Fax PCI modem
Mini-tower orientation: (HxWxD) 17.6" x 6.8" x 18.4"; 44.7 cm x 17.1 cm x 46.8 cm
Internal - Two 3.5" HDD bays; External - Two 5.25" optical bays, one 3.5" flex bay with an additional 3.5" bay in mini-tower; One PCIe x16 graphics slot, One PC-e x8 slot wired as x4, One PCIe x1 slot; Three 5v PCI 32bit/33Mhz slots
Eight USB 2.0: two front, five back, one internal; One serial (2nd serial optional); One parallel; Two PS/2; One RJ-45; Microphone and headphone connector on front panel; Two rear connectors for line-in and line-out
IEEE 1394a available with add-in card; connector located on front panel
375 watts Power Factor Correcting (PFC) power supply
Trusted Platform Module 1.2; WAVE Embassy Trust Suite; Setup/BIOS Password; I/O Interface Security; Chassis intrusion switch; Biometric Fingerprint Reader; Kensington lock
Performance flat panel displays, Dell UltraSharp™ widescreen and standard flat panel displays from 17" viewable to 30" viewable; Analog flat panel displays and CRT monitors also available
USB: Dell QuietKey, Enhanced Multimedia, Smartcard Reader keyboard; Bluetooth Keyboard and Mouse
USB: Dell two-button mechanical with scroll, Dell two-button optical with scroll
Internal chassis speaker; Dell two and three piece stereo system; Dell sound bar available for flat panel displays.