"The biggest architectural change Kaveri APU features is the use of the latest 28nm Steamroller architecture that is a true multi-threaded architecture focusing on enhancing the IPC (Instruction-Per-Cycle) by up to 25%." Wccftech
Steamroller 20-25% IPC increase further supported as the leaks come out for Kaveri. Believe what you want, all I can say is you will be pleasantly surprised!
AMD FX 9650
4.5 Ghz with 4.8 Ghz Turbo
AM3+ 1090FX - Up to 2933 DDR3 Mhz Ram