8GB (2x4GB) RAM Memory for HP TouchSmart 320-1030, 520-1020 ALL IN ONE | eBay
HP TouchSmart Elite 7320 XZ895UT All-In-One PC - Intel Core i3-2100 3.10GHz, 2GB DDR3, 250GB HDD, 21.5 Touchscreen, DVDRW, Windows 7 Professional 32-bit at TigerDirect.com
Best Buy: HP 23" Touch-Screen TouchSmart All-In-One Computer 6GB Memory 1TB Hard Drive 520-1050 pc