Used - Very Good: Socket AM2/AM2+ Motherboards ASUS M2N-CM DVI DDR2 4GB PCI-E 16X USB 2.0 uATX Motherboard For Athlon 64 4000+ Phenom X3 8450e cpu - Newegg.com
Best Buy: Asus AMD Micro ATX Motherboard 667/800/1067MHz (Socket AM2/AM2+/AM3) M2N68-AM PLUS
Asus M4A785-M Micro ATX AM3/AM2+/AM2 Motherboard (M4A785-M) - PCPartPicker