I also play(ed) online:
- Battlefield: 2 / 2142 / Bad Company 2
- Battlefield: 3 / 4
- Battlefield: Hardline
- Counter-Strike: Source
- Blizzard's Hearthstone
- Worms Ultimate Mayhem (Steam)
- Need For Speed: Hot Pursuit (2010)
- Need For Speed: Rivals (2014)
- Plants vs. Zombies Garden Warfare (with Frostbite 3 Engine!)


PC Specs:
- NZXT™ Phantom 820 Case
- ASUS RAMPAGE IV Formula
- Intel Core i7 4930K + BeQuiet DarkRock 2
- G.Skill 16 GB DDR3 1866 Mhz
- Cougar 1000W Power Supply
- NVIDIA GTX 690 by EVGA
- Creative X-Fi Titanium Fatality (Soundcard)

- Logitech G600 (Mouse)
- Corsair K70 RGB (Keyboard, MX Red by Cherry)
- Razer Invicta (Mousepad)


NOTE: Disable "HPET" in Windows and BIOS if you have 2 GPU's in SLi Mode for best performance possible. It's worth it, trust me ;)

http://www.ghacks.net/2013/04/18/try-changing-hpet-settings-to-improve-your-pcs-performance/

In Battlefield 4 it gave me a 20% performance boost with all settings maxed @ 1080p +