I have a HP Pavilion A6300 with DDR2 DIMM memory and currently have a AMD Athlon 64 X2 5200. I want to upgrade to AMD Athlon 64 X2 6400. Will it be compatible to my computer if I change my processor to AMD Athlon 64 X2 6400? The best knowledge I have so far is that they are both compatible to Socket AM2 which is the socket of my PC and from what I have searched so far is that AMD Athlon 64 X2 6400 supports DDR2-800 which is I am unfamiliar of. Can you enlighten me on some things that may answer my question?