Hi, I just upgraded my emachines EL 1300 1.6ghz AMD with a 2.3ghz AMD dual core, it was so easy, BUT the stock heatsink has a small round base to it and it doesnt cover the whole cpu area, just the middle section! I am seeing temps in the 114 f range when the computer is idle! WHERE can I find a better heatsink/fan that has a square base and covers the whole cpu AND will fit the stock mounting 4 hole screw ins? I am used to the clip on clamp down type heatsinks and am unfamiliar with this type of screw in mounting configuration!! Please Help!!