I've just splashed out on a new workstation, as my 'youngest' was a three year old Athlon dual core machine that was struggling a bit with CS4 and the increasing complexity of projects that I'm working on.
I spent all of last weekend carrying out a major operation to get the new computer installed, and shuffle everything around in order to retire my oldest 'admin' PC which is 5 years old.
For anyone who's interested, the spec of the new machine is as follows:
Processor: Intel Core i7 Processor i7-930 (2.80GHz)
Memory: 12GB CORSAIR XMS3 TRI-DDR3 1333MHz
Motherboard: ASUS P6T WS Professional
OS: Windows 7 Professional 64 Bit
Storage: 1 x 250Gb for OS etc, 4 x 1TB configured as 2 x 2TB RAID-0 drives for video storage
Graphics Card: PNY Quadro FX580 512MB GDDR3
It's running like a dream! Rendering is at least 4 times faster than my other workstation.
This is also the first time I've used Windows 7 and I really like it. (Thankfully I missed out Vista altogether!).