Hello, I have a dilema about buy a new desktop or just upgrade a motherboard and a cpu ( dual or 3 core) ....?...my pc is 6 years old is a HP pavillion A1210N ...I upgrade the grafic card , also a video turner and a hardrive ,...is a pentium AMD 64 , I am using a windows 7 ultimate and works fine but sometimes is slow ...I was looking in stores for a best deal but most are from more than $400.00 or alittle bit less and was thinking if just upgarde in this way will be good ?...also I will prefer a motherboard capable to a cpu upgrade ...please I am open to some recomedations , thanks