Not without a significant drop in performance, so it all depends on what your needs are for gaming. You could drop to 4gb ram, hardly any games use 8gb yet, but that's not gonna save much. You could also drop to the 500w corsair psu, but that's cutting it close, so I wouldn't.
yeah I looked into that I have decided to get a 6300 it is £10 more but has around a 15% performance boost so I am going to go for that not 4170 or 4300. I am probably going to keep the rest the same then.