Tinker: You can't pair a CRIMM and a RDRAM together. Thats a 'no no' Bad combination. This is my memory setup: Bank 0: ---KVR800A18-16/512 RDRAM (1) ---KVR800A18-16/512 RDRAM (2) Bank 1: ---CRIMM 800 (1) ---CRIMM 800 (2) Intel Tested Compatible Memories. Nope. This is the first brand new Intel P4 Mobo just released. I have no clue or any idea how it work. I am familiar with my currently running mobo but this one 'no'. I haven't seen it work therefore I couldn't figure out what wrong with it. Does it suppose to beeps? or like Why are all the LEDs green on the mobo and I still get no video or signal? *Confuse* Thanks though. ThA_FiLeR: Are you kiddin'? Taking out the CMOS required to solder it back in place frankly that void the warranty 'BIG TIME'. They want the whole mobo or nothing. Plus, what are the chances of all three mobos when bad on same installation. I think that there is something I did wrong or forget. Thanks.