i have the acer ATC-605-UB12. it has the xc-605 motherboard, i5 4460, 8 gb ram . i am planning on upgrading the psu to http://www.amazon.com/gp/product/B00K85X2A2?psc=1&redirect=true&ref_=ox_sc_act_title_2&smid=ATVPDKIKX0DER , ram to 16 gb, either ripjaws or corsair vengeance ddr3. my question...