I have a reasonably modern developer desktop (E6600, ASUS PN5-E, 2GB RAM, 350GB SATA2, Vista Ultimate x32), but I'd like to squeeze some more out of it. I am wondering what the best bang-for-bucks hardware upgrade would be.
If I limit my budget to £150GBP (~$300USD), what would people say would give me the best performance increase when developing? (Note that I have MSDN so can go for x64 if that's going to give me anything.)
I've been reading Jeff Atwood's Ultimate Developer Rig series and am thinking that adding a 10,000K RPM Raptor and booting off that would be the best (presumably I would run all my projects off the other drive, if that matters??).
Edit 1: sorry, should have said - I have dual monitors already, but an excellent answer for anyone with only one! I want the machine to be as fast as I can get it.
Edit 2: Okay, I've accepted the answer of getting another monitor (and am loving the comment to get three of them!!). I hadn't mentioned this originally, but it is clearly the best upgrade for the money. However, as I have two monitors (one 1600x1200, one 1280x1024), I will be going for the Raptor. I have happily upvoted both Albert's and Antic's answers too! I have looked at perfmom whilst working and the disk is the one that maxes out the most. Thanks to all for the responses :)