Best answer: Hello,
This system can run Overwatch on high settings; however, 8GB RAM could bottleneck the current GPU. You could upgrade your GPU to Radeon R9 3900X Sapphire Tri-X 8GB Edition to remove bottleneck.
As for Gears of War 4, this system can run it on medium settings with no bottlenecking.
For H1Z1 King Of The Kill, you could upgrade your CPU to Xeon E5-2680 v3 and RAM to 16GB to remove bottleneck. If you do not wish to do so, this system can still run at high settings.
I hope this helps.
By iBUYPOWER Product Expert
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