How will days run on this? And is this wireless it's a desktop?

2GB NVIDIA® GeForce® GT 730 Graphics
12gb ram /16max
I7 3.4Ghz
12Gb ddr 4 RAM
2133MHz
Wireless-AC WLAN
1.is this wireless?
2. Can this run well say maybe minecraft or dayz?

Should run fine.

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"1.is this wireless? "

Well, if the specs mention "Wireless-AC WLAN", then it's probable that it has wireless connectivity

"2. Can this run well say maybe minecraft or dayz? "

vanilla minecraft should run quite well, though all bets are off when you start running mods. Dayz will struggle, as the GT 730 is low end graphics card, that's actually slower than minimum spec 8800GT