I asked a question a week or so ago about upping my clamshell (300mz) memory higher than the stated 256 sodimm in the top slot. Seemed to draw allot of interest. Lots of replies, with most feeling it would work with the latest firmware update. That's all I needed to here. I purchased a used 512mb sodimm off Ebay for about $80 and stuck it in. (I already had the latest firmware.) Poof, works fine. Shows I have 544mb of Ram. OSX (which barely ran on this clamshell) purrs along just fine. The only "real" test I can do to see if there truly is a speed increase is to time functions in Photoshop. Saving, sizing, sharpening and all manipulations are noticeably faster now then when I had the 256mb dimm in. Anyhow, for what it's worth, adding the 512mb sodimm made a noticeable difference for me. Thanks to all that replied. -- Your favorite stores, helpful shopping tools and great gift ideas. Experience the convenience of buying online with Shop at Netscape! http://shopnow.netscape.com/