I have here a stick of RAM, pulled from an old PC. I beleive that it is either 128mb or 256mb, and I think it is the Old type 'pc133 sdram'. The model of the RAM is 'HYUNDAI 111A HY57V28820AT-H KOREA' Will I be able to put this in an iMac G5 20-inch, 2.0ghz? (WITH ISIGHT) I think it comes with DDR2 ram so will this sdram work if its in there? Will it help even though it is not matching pairs?