With 🙁 or without fixed multiplier 🙂 overclocking is still possible !!! The most recent problem with fixed multiplier is that you have to change the Front Side Bus frequency. But changing the FSB will result in higher pci, AGP and HDD-Controller frequency !!! I realised the higher controller frequency painful last week on my Asus P3B: My CPU run fine at 124 x 4,5 = 558 MHz, ASUS has two choices to set FSB to 124 MHz. We can choose either 31 MHz or 41,3 MHz.The result at 41,3 MHz was a destroyed File Allocation Table on my Harddisk !!! So be very careful in changing your system speed…I don’t hold responsible for any damage caused by overclocking. There is always a risk to damage your CPU, etc.I made this table of frequency’s for better understanding what you’re doing.Take care about the red fields. Any speed outside specification may damage something in your PC !!!