3-4 years ago i bought a hp pavilion p6687-p-b, it has a 840t 2.9gzh and a oem board N-Alvorix-RS880-uATX (Alvorix). Should I upgrade this which means getting a new cpu+mobo+windows 8=$$$, or get a new mobo +windows 8 and try to unlcock the two cores and try oc? if getting a new cpu, i might get a i3 3220. This is specifically only for gaming (rome total war 2), i also have a 7790 gigabyte hd, should i upgrade that instead? im also running 8gb ddr3 and a 1080p. psu- cx 430watt,i got a coolermaster cooler for the cooler, which keeps it at a 29C idle and light tasking