Yes, there is definitely a way. Here are PSU wattage recommendations for each card based on calculated values + ideal headroom :
http://www.realhardtechx.com/index_archivos/Page362.htm
But before you go searching for a PSU, decide on the card first. Here is a great website that you can use to compare the performances of different cards (anything below 60 FPS is laggy):
http://www.anandtech.com/bench/product/1130?vs=1080
Just select two GPUs from the dropdown list and scroll down for the comparisons.
Lol I have the 4600 in my Z97-A and I was forced to use it while I was waiting for my 970. It was so awful, I couldn't even have like 6 taps open without lagging. :|
Since you have an i7, I'm assuming your budget would be fairly high. Because of that, I'd definitely recommend getting a GTX 970. It is the best card to get right now, right behind the 970, it's bigger brother, which avgs like 7-10 frames higher than it, but costs an additional $200. If you don't want to spend that much on the 970, try getting a 290, 280, or a 270x. Up to you ultimately, but report back if you want me to suggest some high quality PSUs.