I've used this board with an E and a Q. It has gotten excellent reviews (check Anandtech eg), OC's well. While use of OC software isn't recommended, ET6 (included software) gave me a 1-click OC from 3.0 to 3.6GHz if I recall correctly.
GIGABYTE GA-EP45-UD3P LGA 775 Intel P45 ATX Intel Motherboard - Retail $115 after $20 MIRhttp://www.newegg.com/Product/Product.aspx?Item=N82E16813128358
Not SLI compatible, Crossfire only.