Dell Inspiron 620 Power Supply Upgrade (Need Help!)

I purchased my Inspiron 620 about a year ago, and I wanted to upgrade from the stock power supply, and I wanted to know if this power supply would work with my configuration: http://www.newegg.com/Product/Product.aspx?Item=N82E16817148040 

I upgraded the ram from 4 to 8GB, and I upgraded the Graphics Card to this:http://www.newegg.com/Product/Product.aspx?Item=N82E16814102969 

My question is will I be able to use that power supply with my current system?