The PSU is definitely not the component that you would want to skimp on.
Corsair 450W VX Series PSU - ATX12V v2.2 - Ebuyer
Corsair is really reliable with PSUs. A bit more expensive but you get the quality you pay for.
kmote is right. You don't need a quad core to play Sims 3. A reasonably fast dual core would do. That is, unless you plan on doing some heavy multi-tasking, editing, etc.
Corsair 450W VX Series PSU - ATX12V v2.2 - Ebuyer
Corsair is really reliable with PSUs. A bit more expensive but you get the quality you pay for.
kmote is right. You don't need a quad core to play Sims 3. A reasonably fast dual core would do. That is, unless you plan on doing some heavy multi-tasking, editing, etc.