Buying a poker-only computer

[JPeezy55]

Seeking to buy a computer for poker and very little else (web browsing, Poker Tracker, Stars, that's probably it).

I'm wondering what kind of specs I can get by on. I don't want it to be deadly slow, but I can also handle it not being super-fast.

I guess I'm talking mainly RAM and hard-disk space (though if there's anything I'm missing, let me know).

I usually six-table (occasionally more, may do more in the future) and have an external hard-drive I can use for Tracker databases.

Any thoughts extremely appreciated. Thanks. Any suggestions welcome too.

EDIT: I guess the processor's important too.