Intel Core i7-860 Processor
Dell Studio XPS 8100 Motherboard
4 x Samsung M378B5673EH1-CH9 2GB RAM
ATI Radeon HD 5770 1GB GDDR5 GPU
SAMSUNG HD103SJ 1TB HDD
LG DVD Drive HL-DT-ST DVD+-RW GH50N
Now that my guarantee is over I would like to put in my old HDD from my older PC into this one. My question is will I need a different power supply (if yes could you please suggest which one) or if this one is good enough to keep the PC stable.