hello, i have a msi z87gd65 gaming motherboard, intel i7 4770k, kingston hyper x 3k 120gb ssd, western digital 2tb hard drive, corsair vengeance 32gb ram, asus blu-ray cd and dvd reader and writer. im not sure if my psu will able to handle another asus radeon 7870 gpu in crossfire? furthermore, my gpu is running at 26 degrees Celsius when running just google chrome for 10-15 mins.