Go to newegg.com for an advanced search. Select Intel or amd motherboards. For Intel, the h55 is a good entry chipset for socket 1156; for amd, the 785 or 870 chipsets are a good value. Be sure to specify ddr3 for amd and use an am3 cpu. I recommend msi or biostar for value; asrock may also work ok. Asus and gigabyte cost a little more, but I never found them to be more reliable.