DDR Memory Question

If a computer accepts DDR400 Dual Channel memory, will it also accept older DDR333 2700 memory? Even if it is a single stick?
Thanks.

yup, sure will. you can get one stick of 333, or two, and run both 333's at dual channel = 666 theoretically. I read somewhere that dual channel with AMD boards doesn't increase performance significantly. Intel I dunno, I'm and AMDroid

Thank You, MuEagle05. Yah, I have Intel.