So my pc is lenovo h220 and the specs are : pentium dual core e5700@3ghz,ram 4gb,onboard dedicated graphics intel g41 they are hell! So i have decided to upgrade my gpu to Sapphire amd/ati radeon hd 6570 1gb ddr 3 . It requires 400watt power . So i am also buying zebronic zeb 450watts psu . Will the graphic card and psu work on pc my motherboard is lenovo l-ig41m3 v:1.1 please don't refer me any graphic card or psu. Just tell me will these two work on my pc or not? Urgent . Please Don't refer any sites or any other products!