Power supply question

Hello, 

I am new to teksyndicate.  This is my first post:

I decided recently to update major components of my gaming pc.  I am upgrading my Processor, Motherboard, Ram and video card to: i5 3570k, Gigabyte z77x-up4 th, Patriot Viper 3 Series (16 gigs of 1600 speed) and GTX 680 respectively.  

 

My question is:  Would I be ok using my current power supply?  I have been using Antec TruePower Quattro 850.  It is already about 4-5 years old and has more than one 12v rail vs just one.  It is working fine with my current setup, but should I upgrade this too?

http://www.newegg.com/Product/Product.aspx?Item=N82E16817371009

My parts should arrive in about 3 days and want my parts to be safe.

Thanks

It will work just fine. Gotta watch how you hook up the rails is all.

Thanks for the response.  I will save about $100 :)