Hey, anybody wants to take serious tweak the ti with a new processor (of course a ti82..86 NO because a ti89 is cheaper than any tweak). And an answer like buy a hp isn't a good answer becasue (i have many hp 12, 18, 19bII, 28s, 48sx, 48gx, & 67 they are great), the ti has more power. may be more RAM to load a rt-kernel with serious compilers and a flash disk. (ti92 or +). Ale