The GPU needs around 140 watts and the CPU needs 125 watts. General manufacturer recommendations would be a 450 watts power supply for your system as it is.
is a link for a manufacturer as an example for your GPUhttp://www.newegg.com/Product/Product.aspx?Item=N82E16819113327
is a link for the CPU product page at Newegg listing TDP
You should be okay with your power supply.