Hi I have a TiBook 400Mhz and recently went from 768MB of RAM to 1GB and I have not noticed any difference, in fact I think it may have had a negative affect. Simon --- www.simonroyal.co.uk - The box said requires Windows 2000 or better, so I bought an Apple Mac. There are only 10 kinds of people in this world, those who understand binary and those who don't On Jun 28 2007, Peter Sealy wrote: I also had 512 and 256 RAM and upped it to 2 x 512 in my Ti 867 but I really have not noticed any significant increase in performance. I guess it is the old story - depends on which OS and apps you use. On Fri 180 Jun,, at 7:37 AM, mike mac wrote: > Titanium 550 / M8362LL/A now have on top memory slot 512 / bottom > slot 256, will it help me out as far as speed increase to put a new > 512 to replace the 256 and who has the best prices > ......... Peter Sealy Thurgoona AUSTRALIA _______________________________________________ Titanium mailing list Titanium at listserver.themacintoshguy.com http://listserver.themacintoshguy.com/mailman/listinfo/titanium Listmom is trying to clean out his closets! Vintage Mac and random stuff: http://search.ebay.com/_W0QQsassZmacguy1984