Hey im really new to this so please bare with me. My friend installed a nvidea gtx 960 into my i7 3668 inspiron and informed me I would need to upgrade my 240w power supply in order to get it to work. I'm sorry I don't have the measurements but I could update this post after work today. I'm blind when it comes to building a gaming pc and he referred me to this forum. I'm sorry if I didn't give enough info, I'll gladly try to when I get off work. Thank you so much!