Any 1000W psu under $100 will have not 80+ certify rating and you will put all your other components at risk of being destroyed.
You will defiantly need to look and the amount of amps they can handle.
Rosewill Warranty is good for nothing. 90% of the time psu's are dead in box and unable to get a replacement. (Only repair warranty that may take 3 months to get back to you, Postage for repairs and buyers cost).
Simple answer. Reconsider this and save for a decent psu or it will cost you a lot more down the track.