HP Compaq Laptop Intel Core 2 Duo T5470 (1.60GHz) 1GB Memory 160GB HDD Intel GMA X3100 15.4" Windows Vista Business / XP Professional downgrade 6720s (RM390UT#ABA) - Newegg.com
4GB 2x 2GB PC2-5300 Memory RAM for HP COMPAQ 6710b 6710s 6715b 6715s 6716s 6720s | eBay