Cough, cough... Guess I'm not the only one thinking about this stuff... Been developing this dream configuration for the past couple days...
Processor: 2 x Intel Xeon X5355 2.66GHZ QUAD-XEON X5355 S-771 1333MHZ FSB - 8MB L2-CACHE (BX80563X5355A) (1 = $1280) (Total = $2560)
Motherboard: 1 x Supermicro X7DB3 Dual Socket 771 Intel 5000P Extended ATX Server Motherboard (X7DB3-O) (1 = $550) (Total = $550)
Memory: 2 x Kingston 2GB 240-Pin DDR2 FB-DIMM ECC Fully Buffered DDR2 667 (KVR667D2D4F5/2G) (1 = $350) (Total = $700)
Case:
Power Supply: 1 x PC Power and Cooling Turbo-Cool 1000 Watt QUAD CPU & QUAD SLI Ready (1KW-SR) (1 = $550) (Total = $550)
Operating System: 1 x Microsoft Windows XP Professional with SP2 - Retail (E85-02665) (1 = $270) (Total = $270)
Hard Drive 1 (Operating System): 1 x Seagate Cheetah 15K.4 37GB 3.5" 15K.4 SAS 3Gb/s (ST336754SS) (1 = $200) (Total = $200)
Hard Drive 2 (Page File): 1 x Seagate Cheetah 15K.4 37GB 3.5" 15K.4 SAS 3Gb/s (ST336754SS) (1 = $200) (Total = $200)
Hard Drive 3 (Applications): 1 x Seagate Cheetah 15K.4 37GB 3.5" 15K.4 SAS 3Gb/s (ST336754SS) (1 = $200) (Total = $200)
Hard Drive 4 (Samples): 1 x Cheetah 15K.4 146GB 3.5" 15K.4 SAS 3Gb/s (ST3146854SS) (1 = $700) (Total = $700)
Hard Drive 5 (Audio): 1 x Cheetah 15K.4 146GB 3.5" 15K.4 SAS 3Gb/s (ST3146854SS) (1 = $700) (Total = $700)
Hard Drive 6 (Storage): 1 x Seagate Barracuda ES 750GB 7200 RPM 16MB Cache SATA 3.0Gb/s (ST3750640NS) (1 = $550) (Total = $550)
FireWire 1 (Recording Interface): 1 x ADS Technologies PYRO PCI 64 Card (API311) (1 = $35) (Total = $35)
FireWire 2 (External I/O): 1 x ADS Technologies PYRO PCI 64 Card (API311) (1 = $35) (Total = $35)
Mouse: 1 x Logitech G5 Laser 2-Tone 6 Buttons 1x Wheel USB Laser Mouse (931376-0403) (1 = $50) (Total = $50)
Keyboard:
Total so far: $7300
Keep in mind..
1. Pro Tools doesn't run on Win x64..

2. Windows XP pro doesn't address more than 4gb total memory....
3. I'm not done yet.. lol
4. I really don't have enough money to buy this.. It's fun to dream though...