Depends on the computer you have, some OEM motherboards have proprietary power connections and some cases can only accept certain size power supplies. Aside from that, if you have a normal ATX case and motherboard, then yes you can get a better power supply. Corsair CXM model is good for a lower price, I also like the Corsair M12II models since they have been having rebates on them so end up at a very good price https://www.newegg.com/Product/Product.aspx?item=N82E16817151095