i bought AC syndicate because it was on sale and still about 70 c i think I saw 71c in Afterburner but yea it is doing an excellent job at cooling the cpu!
UPDATE
Case fans are terrible....after 2 days of use the RBG lighting will not stay on and in some instances the fans themselves stop and start on their own. the other fans that i added which are CORSAIR AF120 BLUE LED FANs are working just fine. If anyone has any recommendations for other RGB fans that work with Aura please let me know!
I have USB 3.1 with this one as well, does your board have Wi-Fi? mine does not that was the only drawback I saw with the Z370-a. I preferred a hard line connection anyway though so it wasn't that big of a deal.