I have a dell xps 410 core 2 duo E6600 @2.4ghz, 8800gtx 756mb, 2g ram, got 2300 low bench, 1670 benchmark on high, Is it worth investing in a new rig? When is the best time to buy, and is digitalstorm.com a good prebuilder?
You can play like that.
The question becomes: Is 2300 good enough for you?
If yes: continue what you're doing
If no: Consider upgrading... Start with RAM, that's usually a nice cheap way to boost performance a bit