OK so I have two 780s SC in SlL configuration , I can still return the products and get my money back but Im not sure, here is the question I just play on a single 1080p monitor and later on im going to upgrade to a new monitor with 144hz refresh rate , but it is worth it to get The 780 Ti's in SLI , or is not going to make a difference on 1080p monitor? need help guys