Hmm... PS3 or computer parts?
Honestly, you have $2K, the worst you could do is blowing $900 on a timeshare in Costa Rica that turned out to be non-existent because it was sold to you right before a hurricane struck.
i.e. buy both if you want, but if it ends up being too expensive, then I'd invest in a PS3, since compy parts can run for a few hundred more.