hey i just got a lenovo Model H520 (57317569) and im trying to figure out the specs on the graphic cards,i dont know if i need low profile or not ,it dosnt appear to be a slim line model it looks average to me but when i look it up all i find is specs for the slimline model.also i know its low watts 240 but i cant find anywhere that says if the power supply ATX or TFX. ITs a brand new computer and i desperately need to get it game playing ready for christmas.Any help will be sooo appreciated