Processor & Chipset
Intel CoreTM i7-920 (2.66GHz, 8MB Shared Cache)
Intel CoreTM i7-940 (2.93GHz, 8MB Shared Cache)
Intel CoreTM i7-965 Extreme Edition (3.2GHz, 8MB Shared Cache)

Chipset
Intel® X58 Chipset
Operating System
Genuine Windows Vista® Business with Downgrade Rights Service to Windows® XP Professional
Genuine Windows Vista® Ultimate
Genuine Windows Vista® Business
Genuine Windows Vista® Home Premium
Genuine Windows Vista® Home Premium x64 Edition
Genuine Windows Vista® Ultimate 64-Bit

For more details on Dell systems that run Windows Vista, see www.dell.com/vista.
Memory
Tri-Channel DDR3 SDRAM system Memory8
Three (3) user-accessible DIMM slots
3GB3 DDR3 1066MHz (3 x 1GB3 DIMMs)
6GB DDR3 1066MHz (3 x 2GB3 DIMMs)

Hard Drives
All drives are 7200 RPM, SATA-II (3GB/s) unless otherwise noted

Single Drives
320GB4 , 500GB4 , 640GB, 750GB , 1TB4 , 128GB SSD, 150GB 10K RPM, 300GB4 10K RPM

Data Security RAID 1
500GB4 (2 x 500GB), 640GB (2 x 640GB), 750GB (2 x 750GB), 1TB4 (2 x 1TB), 300GB4 (2 x 300GB4 10K RPM)

Performance RAID 0
1TB4 (2 x 500GB), 1.28TB (2 x 640GB), 1.5TB (2 x 750GB), 2TB (2 x 1TB), 256GB (2 x 128GB SSD), 300GB4 (2 x 150GB 10K RPM), 600GB (2 x 300GB4 10K RPM)

Performance and Security, RAID 1+0
1TB4 (4 x 500GB), 2TB (4 x 1TB), 600GB (4 x 300GB4 10K RPM)
Optical Disc Drive
Single Drives
16X DVD +/-RW Drive9, 6X Blu-rayTM Combo Drive10, 6X Blu-rayTM Disc Writer11

Dual Drives
16X DVD +/-RW Drive + 16X DVD-ROM Drive, 6X Blu-rayTM Combo Drive + 16X DVD-ROM Drive, 6X Blu-rayTM Disc Writer + 16X DVD-ROM Drive
Graphics & Video
Designed to support the new PCI Express 2.0 bus architecture with three x16 graphics cards slots12, the Intel x58 Express Chipset will support single, dual and Quad Graphics solutions for sizzling graphics speeds leading to a truly immersive gaming experience.

Compatible with NVIDIA SLITM technology - a revolutionary platform innovation that allows you to intelligently scale graphics performance by combining multiple NVIDIA® graphics solutions in a single system.

ATI CrossFireXTM multi-GPU technology takes your gaming experience to unforeseeable heights with more scalability, higher performance and compatibility for unparalleled visual thrills than ever before.

Single Card
ATI RadeonTM HD4850, NVIDIA® GeForce® 9800GT, NVIDIA® GeForce® GXT280

Dual Card
ATI RadeonTM HD4850 CrossFireX
Sound Cards
Integrated
7.1 channel High Definition Audio

Optional
Sound Blaster X-FiTM Titanium
Communications
Integrated
Dual Gigabit Ethernet13 (10/100/1000Base-T)

Optional
Killer NICTM K1 Gaming Network Card
Ports
Front
USB 2.0 (x2), 1394a (x1), (1) headphone out, (1) microphone in

Rear (Audio connectors)
S/PDIF Audio Out (Coax and Optical), microphone in, line-in, line-out, center/LFE, Rear Surround, Side Surround

Rear(Other)
USB 2.0 (x6), 1394a (x1), eSATA (x1), PS/2 Mouse and Keyboard, Gigabit Ethernet13 (x2)
Expansion Slots
PCI: 1 Slot
PCIe x1: 2 Slots
PCIe x16 Gen212: 3 Slots
Chassis & Case
Dimensions
Height: 55.5 cm (21.9 inches) without stand; 57.2 cm (22.5 inches) with stand
Width: 21.9 cm (8.6 inches) without stand; 35.6 cm (14.0 inches) with stand
Depth: 59.4 cm (23.4 inches)
Weight: 21.7 kg (47.8 lb) typical configuration; 31 kg (68 lb) maximum configuration

Power
EPA compliant 80+ 1KW power supply on all configurations

Drive Bays
(4) 5.25" optical bays
(4) 3.5" internal HDD bays
(2) 3.5" external flex bays (floppy/media reader)