Intel Q6600 http://www.newegg.com/product/produc...82E16819115017
this gigabyte motherboard - http://www.newegg.com/product/produc...82E16813128059

Ive got 3 of those motherboards and they are excellent. As for memory Ive had great success with qaulity/price on mushkin(secondary rigs, not for wow currently), corsair and g.skill(current main rig)

Also dont completely skimp on the PSU, you dont need some $120 psu to run this but dont dive into the bargain bin for $29.95 either The Corsair line is great and so are the Antec EarthWatts (part # are EA###) which are a bit cheaper. But if you are just building one rig I would recommend invest in good quality hardware.

I run these in my less graphics heavy rigs http://www.newegg.com/product/produc...82E16817371006 and these in my heavy gaming rigs http://www.newegg.com/Product/Produc...82E16817139001 Ive read posts (diff forum) where people ahve been running quads with 4gb of ram and mid end graphics cards on the first one I linked and even quads +sli on GTX's on the 2nd one so they are definately solid PSUs and worth the money.