One quick question. Will the GA-EP35-DS3P http://www.gigabyte.com.tw/Product [...] uctID=2742work with Intel's Xeon 3210? I'm planning to build a system based on these two since the Xeon is more affordable than a Q6600 here in my country.

nope, one of these
Intel Xeon® X3360 2.83GHz 12MB Yorkfield
Intel Xeon® X3350 2.66GHz 12MB Yorkfield  
Intel Xeon® X3320 2.50GHz 6MB Yorkfield  
Intel Xeon® E3110 3GHz 6 MB Wolfdale  
http://www.gigabyte.com.tw/Support [...] uctID=2742

I have a GA-P35-DS3P (Rev. 2.0) and a X3210.  It works, but only up to 2.66mHz.  For some reason it won't go past it, so I think I should RMA it once I find a time where I can be without a computer for 3+ weeks.  My assumptions that the -EP35- and -P35- are similar except that one has a few extra settings in BIOS to make it "green."

You  provided the link to the motherboard, yet your too dumb too look at the right side of the screen where it says "cpu support list"????  Wow, you really should get another hobby besides computers, its too complicated for you.