My 2 choices of monitor are the Acer Predator, and the Benq Zowie. Both are 1440p, 144hz. the Predator is more expensive but has g sync. i am using my computer for competitive Overwatch and CS:GO. I have a gtx 1070 GPU. is the g sync necessary for these games on my monitor. what games might need g sync. Basically which is better, and is the g sync worth it.
Benq link: https://www.amazon.com/BenQ-2560x1440-Tournaments-Professional-XL2730/dp/B01H5KKVME
Acer link: https://www.amazon.com/Acer-Predator-XB271HU-2560x1440-Display/dp/B0173PEX20
Benq link: https://www.amazon.com/BenQ-2560x1440-Tournaments-Professional-XL2730/dp/B01H5KKVME
Acer link: https://www.amazon.com/Acer-Predator-XB271HU-2560x1440-Display/dp/B0173PEX20