One more option, Still socket 1150. Supermicro has 2 itx boards but they are also socket 1150 and dont have ipmi
http://www.newegg.com/Product/Product.aspx?Item=N82E16813157486
Here is an option for a socket 1150, Maybe you could sell your cpu to upgrade to a haswell version.
http://www.newegg.com/Product/Product.aspx?Item=N82E16813157467
Dono if you want to spend this much but I ran across these
http://www.ebay.com/itm/HP-Proliant-DL585-G2-Server-4x-Dual-Core-Opteron-2-6GHz-64gb-2x-PSU-/191115246890?pt=COMP_EN_Servers&hash=item2c7f5b3d2a