AMD's latest roadmap reveals the company's model numbers for two Phenom X4 and three X2 models planned to be released in Q4'2007 and Q1'2008. The Agena-based Phenom X4 processors carry the GP-7xxx model number. There will be two Phenom X4 GP-7xxx processors at launch - the GP-7100 and the GP-7000. AMD plans to clock the Phenom X4 GP-7100 from 2.2-to-2.4 GHz. The Phenom X4 GP-7100 has a 3600MHz HyperTransport 3.0, or HT3, bus speed. The lesser Phenom X4 GP-7000 has a targeted clock speed between 2.0-to-2.2GHz and a lesser HT3 bus speed in excess of 3200MHz. The two quad-core processors will have 89-watt TDP. AMD plans to launch one Phenom X2 GP-6xxx model by the end of the year. The Phenom X2 GP-6550 joins the Phenom line up next quarter clocked somewhere between 2.0-to-2.4GHz. The first Phenom X2 to launch has a 3600MHz HT3 bus speed. This model has a TDP of 65 watts. Two more Phenom X2 GP-6xxx models will join the lineup in Q1'2008. The Phenom X2 GP-6650 will launch first between 2.2-to-2.6GHz with a 3600MHz HT3 bus speed. This model has a 65-watt TDP, similar to the GP-6550. The next Phenom X2 GP-6xxx model to launch is the GP-6800. This model has a higher 89-watt TDP, but still a dual-core processor. AMD aims for a 2.4-to-2.8GHz clock speed with a 4000MHz HT3 bus speed.