I'm looking to buy a graphics card for gaming (BO2, BF3/4, Arma 2/3, DayZ, Minecraft, etc) and I can get a Evga 670 Signature 2 for $420 or a Msi Twin Frozr III 680 for $433. Should this be a no brainer to go for the 680 or would it even make a difference? Thanks in advance