I've tried to put together a sample build someone might use if they wanted to spend a reasonable amount of money on an extremely fast PC. The use I have foremost in mind is gaming, but the X2 excels in many areas.
MonarchPC Combo: $564
-MSI K8N NEO4 Plat / NF4-Ultra
-A64 X2 3800+
-Shin-Etsu Thermal Grease
-Zalman CNPS7000B-AlCu
Seasonic S12-500W $129
OCZ Value 2x1GB PC3200 $193
MSI RX800XL $292
SB Audigy 2 Value $62
Barracuda 300GB 7200.8 SATA $200
Subtotal: $1440
All prices save the MonarchPC combo are from Newegg. If you have a better price, let me know!
MonarchPC Combo: $564
-MSI K8N NEO4 Plat / NF4-Ultra
-A64 X2 3800+
-Shin-Etsu Thermal Grease
-Zalman CNPS7000B-AlCu
Seasonic S12-500W $129
OCZ Value 2x1GB PC3200 $193
MSI RX800XL $292
SB Audigy 2 Value $62
Barracuda 300GB 7200.8 SATA $200
Subtotal: $1440
All prices save the MonarchPC combo are from Newegg. If you have a better price, let me know!