Whats the difference between a Core 2 Quad Q9550 and Intel Xeon X3360? I will be using on a 780i motherboard?

I have a 780i motherboard and am looking to install one of these processors into it. I know the Q9550 is a desktop CPU & That the Xeon X3360 is a server CPU, but what are the major differences? They both have the same specs as far as I know and are in the same price range. I also have plans to overclock in the... show more I have a 780i motherboard and am looking to install one of these processors into it. I know the Q9550 is a desktop CPU & That the Xeon X3360 is a server CPU, but what are the major differences? They both have the same specs as far as I know and are in the same price range. I also have plans to overclock in the future.

Which is better and which will perform best on a 780i Motherboard?
(If a Xeon processor can be put on a 780i motherboard, I do not know)
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