I got a Corsair hx850w so I'm pretty confident in its quality.
I guess I'll just plug it in and give it the benefit of the doubt. I thought I would play it safe but from the looks of it, I don't really need to bother testing it first. Regarding shovenose's last post, I didn't really wanna have to go through the trouble of returning the mobo or ram so thats why I wanted to test it first :P
Thanks for your advice guys. I'm just gonna plug it in and turn it on. And if something happens, I have all of you to blame!