• Log In
  • Register


ASRock - Fatal1ty Z370 Gaming-ITX/ac Mini ITX LGA1151 Motherboard

( 4.8 Average / 11 Ratings )




Part #

Fatal1ty Z370 Gaming-ITX/ac
(or) Z370 Gaming-ITX/ac
(or) 90-MXB670-A0UAYZ


Black / Silver

Form Factor

Mini ITX

CPU Socket



Intel Z370

Memory Slots

2 x 288-pin DIMM

Memory Type

DDR4-2133 / 2400 / 2666 / 2800 / 2933 / 3200 / 3600 / 3733 / 3800 / 3866 / 4000 / 4133 / 4266 / 4333

Maximum Supported Memory

32 GB

RAID Support


Onboard Video

Depends on CPU

CrossFire Support


SLI Support


SATA 6 Gb/s


Onboard Ethernet

1 x 1000 Mbit/s

Onboard USB 3.0 Header(s)


Completed Builds Using This Part

See All Completed Builds


Prices for this part are not available.

Price History (Excluding Tax) History:


stevensmeister 11 points 17 months ago
from completed build My Coffee Lake Rig

Got this board for the onboard intel lan, and the 7 phase heatsink. No issues so far.

sponix 2 points 15 months ago

ASRock Fatal1ty Z370 Gaming-ITX/ac Mini ITX Motherboard Board does what it needs to do and the UEFI BIOS is easy to navigate. Wish it had another Fan Header or two, but with Mini ITX the board space itself limits what all you can have on there. Easy solution is to just run a Y-cable or a Fan Hub. Did a fast Memory OC from 2400 to 2666 on the G.Skill 2400 DDR4 and it seemed to take it just fine. Turned it back off before pushing the Rig out the door though because I didn't have time to validate stability of the OC.

Pazaz 68 points 14 months ago
from completed build Littlefoot


  • Amazing VRMs.
  • Looks good.
  • RGB is there if you want it, gone if you don't.


  • Long/Short Duration Power Limit can only go up to 200W.
  • M.2 is on the back of the board (not specific to just this motherboard), so airflow is reduced. Can cause throttling or reduced lifespan on PCI-based M.2 drives.
  • +/-100 mV max offset range (fine depending on LLC level)
JEPxx 27 points 14 months ago
from completed build Vanilla Thunder

I initially went with the non gaming version of this motherboard, but the sensors and VRMs were somewhat funky, so I decided to return and go with this one since I read in forums that it is the only good ITX board for coffee lake that has good VRMs and overclocking capacity. So far, very pleased with it.

jakecc_ 39 points 11 months ago
from completed build MacBook Pro + eGPU Alternative

Nice looking mobo, all the IO you can think of, and even a Thunderbolt port! Only one usb header, so be sure to grab an internal USB hub or something, but otherwise it works great.

TiM-XD 7 points 9 months ago

I bought this purely because it's the only mini ITX board with Thunderbolt 3. Still, it does everything else that I want, so I'm very happy with it.

BDP 18 points 7 months ago
from completed build ITX CORE POWER

Has all the features I could currently wish for - Thunderbolt 3 is a futureproofing must-have so I was really pleased that here was a Z370 mini itx motherboard that offered it - I understand it supports pretty decent overclocking too though I haven't taken this route just yet. I suppose the only downside is that it could have provided a second M.2 slot on the upper side of the board with a heatsink - like its competitors from Gigabyte & Asus - Also it could have included a 4th fan header like its Z270 predecessor - however it has 6 SATA ports which could serve me well in my Fractal Core 500 case if I ever decide to maximise the full complement of HDD (3) / SSD (3) & 5.25" (1) drive bays.

Dragon0000007 35 points 4 months ago
from completed build Cute White ITX Lazer3D SFF

Better, than Asus, because ASRock BIOS is more convenient, it’s audio chip is a bit better, it has USB 3.1 gen 2 (aka 3.2, in fact it is Thunderbolt), wifi is 5 mhz ac, cable is 1000 Mbit, and other minor things like better control of fans and mouse polling rate. Also, Asus m.2 heatsink is not really cooling, and the second m2 is not really m2 ). And sometimes they say Asus capacitors whine. Asrock capacitors whine, too, but you could just turn off CPU C-States.

Pauluxav 10 points 4 months ago
from completed build Wee beastie

Beautiful, very nice to work with, one more fan header than its rivals. I like the high spec power chokes, mosfets and capacitors and the high number of phases. Its also got thunderbolt 3 (although it is the lower throughput version) which is pretty impressive at this price.

LucasChristo 35 points 1 month ago
from completed build So, I did a thing...

Not 100% sure on the current market however when I purchased this board it was the only mini ITX board with 7 Phase power delivery. Word on the street was the other boards struggled to get Coffee Lake >5Ghz. I got 5Ghz on the dot @ 1.32v with my 8600k.

I removed one star only because this board doesn't have overly large heatsinks. This is an ITX board designed to be used in a small, enclosed environment with cables potentially blocking airflow from case vents etc. Couple this with watercooling (no airflow over motherboard at all) and I think you might have a recipe for disaster.