The AMD Athlon X2 QL-64 is found at the high end of the Athlon X2 line with a core speed of 2100MHz and running on 35 Watts. The AMD Dedicated Multi-Cache technology means that each core is made with its own cache memory meaning greater multi-tasking ability and overall performance. The Athlon X2 notebook processors offer both a 32 bit and 64 bit operating mode are made to be compatible with Windows XP Professional and Home Editions, Windows 98, Windows ME, Windows NT, Windows 2000, Linux and Windows Vista. The Athlon X2 processors are aimed to the average computer user that is working with the normal, everyday programs.