I re-iterate the suggestion for going for the 4400+ - there's only a 200mhz difference so even if you're not overclocking you won't notice any difference. Your pocket will notice a difference however
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I might choose a different case - Antec, Lian-LI or Silverstone - any with 120mm fans for quiet cooling.
A sound card might be an idea if you're any sort of audiphile - the Audigy 2 ZS would be an excellent choice.
Other than that perhaps a different hardrive (Hitachi 250GB/Seagate 200GB 7200.7/Samsung Spinpoint 250GB) depending on what you want, but that isn't a biggie.
Also if stuck for a PSU, Tagan is an excellent choice you end up choosing a case like the Antec P180 due to its fan placement (choose the 530W unit). Also, others like Seasonic and then Enermax and Fortron/Sparkle if you're happy to go with dual-rails. Antec I've had crap out on me or at least doesn't seem in the same league as the aforementioned ones.
I might choose a different case - Antec, Lian-LI or Silverstone - any with 120mm fans for quiet cooling.
A sound card might be an idea if you're any sort of audiphile - the Audigy 2 ZS would be an excellent choice.
Other than that perhaps a different hardrive (Hitachi 250GB/Seagate 200GB 7200.7/Samsung Spinpoint 250GB) depending on what you want, but that isn't a biggie.
Also if stuck for a PSU, Tagan is an excellent choice you end up choosing a case like the Antec P180 due to its fan placement (choose the 530W unit). Also, others like Seasonic and then Enermax and Fortron/Sparkle if you're happy to go with dual-rails. Antec I've had crap out on me or at least doesn't seem in the same league as the aforementioned ones.