idk about that brand.
heres a good reference for quality psu'shttp://www.eggxpert.com/forums/thread/323050.aspx
if it would acheive that wattage consisntely then yes i think so.
the 570 is about a 15% jump in performance for about 60 bux or more so u can make that desicion\
i used this as my refrence btwhttp://www.anandtech.com/bench/GPU11/188http://www.hwcompare.com/
is also a really good site, doesnt give real life reality but its pretty close and has a lot more selection for benchmarks.
btw if you a student or you know someone that is you can do thishttp://www.microsoft.com/student/en/us/windows/buynow/default.aspx
to get your OS for about 42 dollars thats a discset and a dl version
hope this helps.