I recently maxxed out my memory at 512MB of SDRAM. This morning, I've been fiddling with Poser to answer some questions for folks at the forums here. In order to accomplish this goal, I currently have these programs running: 1.) Poser 2.) Internet Explorer 3.) Outlook Express 4.) ThumbsPlus 5.) Powerdesk Utilities 6.) Ulead PhotoImpact (and sometimes Adobe PhotoShop) I'm having no problems rendering in a new window. Of course I'm also using Windows XP Home Edition. Since I've maxxed out the memory, I don't even hear the hard drive churning when I render. And I have the case open right now!