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If you are going to do any gaming besides light gaming, just get the Blackbird. Not even 90% of the people that get Mac Pros need that much processing power. The Mac Pros use server processors. The Blackbird is a great value.
 
Sometimes in life you can hammer a round peg into a square hole. We have all done this in the past, and when we get away with it, we count ourselves lucky. However, I think the prevailing opinion here is that this in one of theses times that no amount of hammering will help you out.

Your choice a simple…
- 1. A CPU-centric system
- 2. A GPU-centric system

Sorry to be blunt about it, but there you have it.
 
Is it truly a fact that Windows will function in BootCamp exactly as it would on a PC with like hardware?

Just so you know, BootCamp is not required to run Windows. It just basically helps you with the partitioning and installation process. I have Windows XP Pro x64 on a separate internal drive and I did not use BootCamp to load it. Like any Windows machine, you can pop in an installer disc and easily format a drive and install Windows without any other application. The drivers will be on the Mac OS 10.5 installer disc, unless you choose to run Windows XP Pro x64.
 
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