gee theres really not much to what you are asking about.The cel633 is a cel2 so it needs a p3 370 socket.A ppga cel board wont do,not without a powerleap 370 adapter.So you need a recent mo/bo,or the correct adapter.I have that same cpu on a slocket,which is the type adapter required to run a fcpga cpu on a slot1 mo/bo.So with out telling me what type mo/bo you have,I cant help you.Then once thats over with,you simply go into the cmos at bootup and set the front side bus speed to 100mhz.This pushes the cpu to 9.5x100=950mhz.I recommend a motherboard that has the softmenu for the express purpose of setting the front side bus.I like abit motherboards,I also like Asus. Pc100 ram works fine,as all you are doing is going to the 100mhz speed.I use the stock cooler that came with my retail633,which I got from onvia.com.So I would think that the asus cus2 or the new abit bx-raid would be good for a motherboard,I use the old abit bh6,with its bios flashed to the ss ver.But if you need a board,get a newer one.Good luck.