I have an Pll (266 MHz) PC with an Intel AL440LX MB and 64M Ram. I want to increase the ram to 128M by adding 64M PC100 ram. Could PC100 ram work on my MB together with my old 64M ram? (of couse, working on a lower system bus speed 66mhz i think). Could i mix ram's with different desinged speeds? I searched Intel website but the information is not very clear. Thank you very much for your information and help! SLo -- HKHKHKHKHKHKHKHKHKHKHKHKHKHKHKHKHKHKHKHKHKHKHKHKHKHKHKHKHKHKHKHKHKHKHKHKHK Stephen Lo ([log in to unmask]) Vancouver CommunityNet Vancouver BC Canada Visit our website regularly for FAQs, articles, how-to's, tech tips and much more http://nospin.com - http://nospin.org