Running two graphics cards?

[j.puscar]

Hey guys im kind of a noob to this but I started playing PUBG recently and my computer is running it on low fps most of the time and has some freezes every once in a while.
My build is this:
Power Supply: Corsair CX 750W 80+
Operating System: Microsoft Windows 10 Home Premium
Motherboard: MSI Z87-G43 Gaming ATX LGA1150 M
Memory: Corsair Vengeance 16GB (4 x 4GB)
Hard Drive: Seagate Barracuda 1TB 3.5" 7200R
Graphics Card: EVGA GeForce GTX 770 2GB Superclocked
CPU: Intel Core i7-4770K 3.5GHz Quad-Core Processor

Now my question is, would it make a big difference if I bought another graphics card and ran a dual system? Also which graphics card would you guys recommend?

 

[Rahul_Ignited]

You can only pair two cards with same GPU and Memory so with a GTX 770 2GB, you can only pair another GTX 770 2GB however the manufacturer may be different.

Currently there is no point in buying another GTX 770. It's pretty old Kepler GPU. And besides that, running SLI has many disadvantages as well so your best bet is buying the best single card you can afford such as a GTX 1060 6GB or GTX 1070

buy the GTX 1070 ti, GTX 1080 or GTX 1080 ti if you plan on gaming higher than 1440p

 

[DRagor]

You would need exactly same card to make them run together in SLI ... except your motherboard does not support SLI at all. Not to mention it would not help at all, because you need more VRAM for PUBG. Your best move would be to sell 770 and buy gtx 1060 6Gb or better card.