Gathered a list of computer manufacturers who make computers specifically geared for hardcore traders.
Multiplex PChttp://www.multiplexpc.com/Multiple Monitor Computers $699 - $1,899
Multiple Monitor Laptops $1,299 - $1,399
Multiple Monitor Arrays 2-12 arrays, $599 - $4,999
Multiple Monitor Stands 2-12 arrays, $575 - $1,490
Multiple Monitor Software $139
Multiple Monitor Furniture $1,549 - $2,394
Accessories adapters, switches, laptop solutions
Trading Computershttp://www.tradingcomputers.com/Desktops $1,599 - 3,590
Laptops 15-17 inch, $1,399 - 2,899
Monitor Arrays 2-8 arrays, $642 - $2,301+
Monitor Stands
Accessories video card/converter/switch, router/firewall, battery backup
Trading Desktopshttp://www.tradingdesktops.com/Trading Computers 2-12 monitors, $2,595 - $4,300
Trading Laptops 12-17 inch, $2,520 - $3,542, accessories
Trading Monitors 2-12 arrays, $850 - $4,950
Sonata Traders Worldhttp://www.tradersworld.com/computers/Desktops $1,599+
Laptops multiple monitor accessories
Monitors $299 - $399
Monitor Stands 2-6 arrays, $219 - $649
Accessories video card, battery backup, quiet case, power supply
Super PC Computershttp://www.superpccomputers.com/Multi-Monitor Computers $999 - $4,599
Multiple Monitor Displays $1,999 - $4,595
Multiple Monitor Laptops $1,395 - $1,495
Multi-Screen LCD Stands 2-12 arrays, $219 - $1,495
Desk & Wall LCD Mounts Adjustable Dual, 9-12 arrays, $2,999 - $4,595
Multiple Monitor Desks Dual-Superlarge, $1,755 - $2,595
Accessories adapters, switches
Custom Products custom multi-monitor arrays, multiple HDTV mounts