Basically I have recently been playing alot of Garrys Mod and Battlefield 4 and have noticed some lag on each game (Dropping beneath 60 fps) I'm sure my system can run it fine as I have spent a hefty amount of money on it. So I decided to do a NovaBench test and achieved a score of 2243. I originally thought that was good and then saw people with 680's are getting highter GPU scores than me. Is my GTX 780 underperforming? Any help would be appreciated.
Specs: Microsoft Windows 7 Home Premium
Intel Core i73770K 3.50GHz @ 3901 MHz
Graphics Card: NVIDIA GeForce GTX 780
RAM: 8 GB Corsair Vengeance @ 1600MHz
HDD: 1 TB 7200 rpm 171 MB/s write speed
PSU: Corsair 650 TX
MOBO: Gigabyte z77-ds3h
Specs: Microsoft Windows 7 Home Premium
Intel Core i73770K 3.50GHz @ 3901 MHz
Graphics Card: NVIDIA GeForce GTX 780
RAM: 8 GB Corsair Vengeance @ 1600MHz
HDD: 1 TB 7200 rpm 171 MB/s write speed
PSU: Corsair 650 TX
MOBO: Gigabyte z77-ds3h