Will This Fit? EVGA SuperNova 750W G2 Inside Corsair 300R

[ChooChoomotherFecker]

As the title says is the PSU to big for my case the corsair 300R? Im looking to upgrade my desktop to a Gtx 1070 (currently have a Gtx 750). My CPU is a i7 4790k and my mobo is a Asus z97k CSM.

https://www.amazon.com/EVGA-SuperNOVA-Crossfire-Warranty-220-G2-0750-XR/dp/B00IKDETOW/ref=sr_1_1?s=pc&ie=UTF8&qid=1466916166&sr=1-1&keywords=750w+psu+g2

 

[N3rdR4ge]

that'll fit fine.