I don’t think you will be sorry. Win 64 has been remarkably stable here in our labs with the entire production studio, and so far so good. The driver issue isn’t as bad as it was 6 months ago – so you should be fine as long as you stick with tried and true components (ATI or Nvidia for graphics etc).
In terms of your RAM though – I would go way beyond 4GB if you are using Win64 bit. As much as you can afford. Apps like AE will still be running in 32 bit mode under a system called WoW 64 (Windows on Windows 64) which in essence is really emulation. (Don’t worry – its not emulation like Rosetta on Mac – this is emulation to the chip – no real performance loss).
The point is – AE will use all 4GB. That doesn’t leave much for the OS, and you will also lose some RAM to a thing called the PCI express Black hole….(nothing you can do about it). The whole reason to take the plunge to Win 64 in my opinion is to really ramp on RAM capability.
If going beyond 4GB is not realistic – I would say stay with Win XP. 4GB is its max for the entire Win XP 32bit system. The really nice thing about Win 64 is all 32 bit applications get their own individual slice of the overall RAM pie – where in Win XP they have to fight over the same 2GB piece. Win 64 will let you run AE to the max 4GB, run multiple apps at the same time without system bog, and give you stellar performance on a well tuned system. (especially with Nucleo….couldn’t resist a shameless plug…)
The only caveat is – you need LOTS of RAM, and yes – a licensed copy of Win XP 64 bit (which is seperate from Win XP Pro or Home). You also don’t need to worry about the 3GB switch with Win XP 64bit (I don’t recommend it even for Win 32bit).
My $0.02
Steve
GridIron Software Inc.