If you're just under, with (somehow) 895MB RAM instead of 1024, then just turn down some settings and you'll be fine.
(EDIT: I figured it out, 512+256+128)
Somewhat on-topic, RAM is cheap if you want to use Amnesia as an excuse to upgrade. Hopefully your 128 chip isn't slowing down your bus with DDR2 400 or something. That would be unfortunate.
(This post was last modified: 01-13-2011, 02:43 AM by hollowleviathan.)