Will 512 266mhz sodimm work with my ibook g3 500mhz? or does it only use pc133?
PC100 or PC133, 144-pin SO-DIMM
128, 256 or 512 MB
so it won't work in it. Like cwsmith said, it's have to be either PC-100 or 133. I think even a 64MB will work too, as i was able to pull one out of my Pismo (had a 64MB PC-100) and threw it in my ibook 900 one time (g3, last to be produced of those series)