Eurocom Phantom-x is a desktop replacement laptop which can have a quad core xeon processor.

Specification:

• 17.1-inch Widescreen Ultrasharp WUXGA 1920-by-1200 or WSXGA+ 1680-by-1050 with Glossy or Matte Surface
• Upgradeable Desktop Processor; FSB 1066MHz/1333MHz; Intel Quad Core 8MB or 12MB L2 cache, Core 2 Extreme or Core 2 Duo 4MB L2 cache; Quad Core XEON; LGA775, supports PENRYN 45nm
• up to 960GB of hard drive space; supports three physical 3Gb/sec SATA-300 hard drives with RAID 0,1,5
• SDD (Solid State Drives) available
• up to 8GB DDR2-800 PC2-6400 superfast memory; 200pin; SODIMM; 2 RAM sockets
• Modular VGA Technology: 512MB DDR3 Nvidia GeForce Go 7950GTX, 8700GT, 8800M GTX, 9800GTX or Quadro FX1600; 1GB DDR3 7950GTX, 8700GT or 8800M GTX with Dual (SLI) VGA operation
• Choice of optical drives: Multi DVD+-RW/-RAM, Blu Ray or HD DVD
• DirectX10 support with Nvidia 8700GT, 8800M GTX and FX1600
• High Definition TV Support: HD Audio interface; HDTV S-Video 7-wire output with optional TV tuner
• Supports two External Displays: one DVI Dual Link port with HDCP support and one CRT port
• Wireless LAN: SuperG 108Mbps or 802.11agn
• Operating Systems: Windows XP Pro, VISTA 64-bit; LINUX; Server 2008
• Internal 7-in-1 Card Reader; MS/MS Pro/MS Duo/MS Pro Duo/SD/Mini-SD/MMC

more here