Its a Thinkpad t410, and a quick dxdiag search reveals that it has an Intel HD (Core i3) onboard video chip, with 1273 mb of ram. The processor in it is an Intel core i3 M 370 @ 2.4 GHz (4 CPUs) and is fitted with 3 GB of RAM(thats the extent of my knowledge about the RAM, I dont know any specifics on the speed or type or whatnot) And yeah, my knowledge on a lot of this stuff is fading away, I havent tinkered with much of this for a long time.
For comparison, I loaded up the Minecraft Alpha today and it was fairly choppy, not entirely unplayable, but I would definitely want it smoother if I were to play for a more extended period of time. I havent actually PLAYED Terraria yet so I cant comment on its performance, but id imagine itd probably fare a bit better. Right now im just wanting an opinion from someone who's played both.
Alternatively, I could download one of the cheap Minecraft knockoffs from the indie section of Xbox arcade, but thats really not what I was looking for; Infiniminer could be a viable option but I've only heard of it, I know nothing about it. Idk, could my computer be hampered down by malware or too many processes open at once? It seems in theory that id be able to have better performance, but its not really the case.