all apple computers and especially when running osx are very picky about ram-specs. there should be no problem with pc133 chips, as i'm running one flawlessly with two pc100 mixed. there is no need to buy pc133 anyway as they get downscaled to pc100 - as our bus-speed is. but i must confess that i buy my ram only at apple certified resellers, so the specs of the sold ram are 100% apple coompatible. f. Am Samstag, 08.02.03, um 14:16 Uhr (Europe/Vienna) schrieb Christopher Hack: > hello fellow cubers. quick question. i was under the assumption you > could > use pc100 or pc133 chips to upgrade the ram. i have just removed the > existing ram and replaced it with a whole load of pc133 ram - then > found the > cube doesn't like it. fortunately the dealer will take it back for a > swap, > but i just wanted to double check with one of you knowledable cubists > out > there. > thanks. chris