Power Supply Upgrade for Dell 990 Mini Tower

Hello,

I want to upgrade my PSU in this 990 Mini Tower. i was wondering if this PSU would fit: 

http://www.amazon.com/Erp750-pm-Certifications-Crossfire-Efficiency-Protection/dp/B00IZEYIRO/ref=sr_1_7?ie=UTF8&qid=1405437558&sr=8-7&keywords=power+supply

Or If anyone has any suggestions would be more than appreciated.

Thank you