I have an acer aspire tc 705 (i5 4460, gtx 745 oem, 10gb RAM) and am looking into upgrading. I already know I need a better motherboard and psu along with the gpu but my main concern is: does acer use integrated processors? I really do not want to need to buy a new processor and wish to use my old one. (The only information on my motherboard is that its acer aspire tc 705)