Eugene
OK, it's not a bad system but it's still comparing Apples to Oranges (pun not intended).
- Your Core 2 Quad is not a Xeon
- Your mobo does not support 32GB RAM
- Your mobo does not support 2 CPUs
- Your mobo has not got a 1600 FSB (never mind a dual bus!)
- I would also like to see benchmarks from your overclocked chip Vs a 2.8 Xeon - I would be surprised to see a massive difference and the Xeon wont have a shortened life!
- You don't have an operating system listed
- You don't have any bundled software listed.
I think the prices of the Mac Pros are very reasonable for a top quality system at the high end of the spec. At the end of the day I would be happy to put a Mac Pro in a server cupboard and let it run for years on end - I would not trust your components to run constantly for over 12 months.
I may have just been unlucky, but I have had my fair share of problems with abit motherboards!