ms-7616

Hi Looking to have 3 or 4 monitors not for gaming just basic admin stuff. Currently have : Motherboard = medion ms-7616 Psu = 500w Gpu = amd raedon hd 5450 1gb ddr2 The current hd 5450 that I have can only support 2 monitors so looking at add a second gpu for 3 or 4 monitors. My question...