Strong buy recommendation from me. In my system are installed Q9550 with Asus P5Q Deluxe board since January 2009. The BIOS provides the memory automatically to 800 Hz with a 5-5-5-18, because the standard programming was set at 800 Hz and 1.8 volts. However, they are for 1066 Hz and 5-5-5-15 provided and tested at 2.2 volts. Therefore, one must unfortunately enter "1066" in BIOS manually. In ausus boards of P5er row should (if you manually adjust the voltage of Drams) 2.2 volts instead of 2.1 volts set because the board übervoltet 0.1. For me 2.1 volts are adjusted. Furthermore, my system is übertaket and the memory running stable at 1,150 Hz.
