My son has a Athlon 64 3000+,Asrock 939Dual-Sata2,1gig ram and geforce 6200 video card.I am going to update his computer but stay with socket 939 until i can afford a conroe setup.Anyway i bought him an Athlon 64+ San Diego cpu today and was wondering if when i put it in if i will have to reformat the hard drive.Thanks for any responses.