Board Features

The X370 Gaming-ITX/ac has a wide variety of high-end features including a USB 3.0 Type-C port on the rear panel, a Realtek ALC1220 audio codec, and Intel networking. The primary and only PCIe 3.0 x16 slot operates at its full specification, and the rear mounted PCIe 3.0 x4 M.2 slot doesn’t share bandwidth with anything else on board. The PCIe 3.0 x16 slot is reinforced with what ASRock call Steel Slot to minimize damage to the slot with a heavy graphics card installed.

ASRock X370 Gaming-ITX/ac ITX Motherboard
Warranty Period 2 Years
Product Page Link
Price $160
Size ITX
CPU Interface AM4
Chipset AMD X370
Memory Slots (DDR4) Two DDR4
Supporting 32GB
Dual Channel
Up to DDR4-3466
Video Outputs Two HDMI 1.4b
Network Connectivity Intel I211AT Gigabit LAN
Intel 802.11ac Wi-Fi
Onboard Audio Realtek ALC1220
PCIe Slots for Graphics (from CPU) 1 x PCIe 3.0 x16
PCIe Slots for Other (from PCH) N/A
Onboard SATA Four, RAID 0/1/10
Onboard M.2 1 x PCIe 3.0 x4, on Rear
USB 3.1 (10 Gbps) N/A
USB 3.0 (5 Gbps) 1 x Type-C Rear Panel
1 x Type-A Rear Panel
2 x Type-A Rear Panel
2 x Header
USB 2.0 2 x Type-A Rear Panel
2 x Header
Power Connectors 1 x 24-pin ATX
1 x 8pin CPU
Fan Headers 1 x CPU (4-pin, PWM Only)
1 x System (4-pin, PWM & DC)
1 x System/Pump (4-pin)
IO Panel 1 x USB 3.0 Type-C
3 x USB 3.0 Type-A
2 x USB 2.0 Type-A
1 x Network RJ-45 (Intel)
2 x HDMI 1.4b
1 x Combo PS/2
6 x 3.5mm Audio Jacks (Realtek)
1 x S/PDIF Output (Realtek)

On paper, the X370 Gaming-ITX/ac looks very strong and has a lot of features you would expect from a mid-range to high-end X370 ATX offering. The only downfall to ITX other than lack of PCB real estate is the lack of physical multi-graphics card support through CrossFire and SLI.

Visual Inspection

While the X370 Gaming-ITX/ac conforms to the standards for the miniITX form factor (170 x 170mm), the all-black PCB is pretty stacked with circuitry, components and chips. The general theme of the board itself is all centered around gaming, with the red accented power delivery and chipset heatsinks signifying the 'Fatal1ty' branding. One massively neglected feature in comparison to a lot of other boards in the same price range and segment is built in RGB LEDs; the X370 Gaming-ITX/ac has no LED lighting built-in whatsoever, although a single RGB LED header has been included.

Due to limitations in sizing due to the miniITX form factor, only two DRAM slots have been included, but this very normal for a board considered small form factor. The DRAM slots support up to a maximum of 32GB (2 x 16GB) in capacity, with speeds up to DDR4-3466, which is higher than a lot of other AM4 socket motherboards, mainly due to the latest AGESA firmware updates.

In regards to controllers in addition to the X370 promontory chipset, ASRock has implemented a single Realtek ALC1220 audio codec which is complimented by a pairing of Nichicon gold audio capacitors and also features PCB isolation from the rest of the components and circuitry. The audio inputs associated include six 3.5mm audio jacks supporting up to 7.1 surround sound, with a single S/PDIF optical output. Also featured is the Intel I211AT network controller which is Gigabit compliant and powers the single LAN port on the rear panel. In addition to this, ASRock has included an Intel Wireless AC 2x2 Wi-Fi network card which slots into a specifically created expansion slot on the PCB.

The power delivery on the X370 Gaming-ITX/ac is rather substantial for a Mini-ITX offering in comparison to other AM4 socketed models and a clear emphasis on performance has been put onto this board by ASRock. The power delivery runs in a 6+2 configuration with three CPU phases being doubled up upon giving a total of three Intersil ISL6625A drivers and running a conventional 3+2 design; the two phases allocated for the SoC also feature individual ISL6625A drivers. Controlling the power delivery is a single Intersil ISL95712 PWM regulator and a wave of Sinopower SM7341EHKP MOSFETs can be found under the low-line metallic red heat sink. Finishing off the power delivery is total of eight chokes which is complimentary to the eight phases. Providing power to the CPU is an 8-pin 12V power connector, while a 24-pin ATX power connector is included for the motherboard.

The board has a fairly standard set of storage options available with a total of four straight angled SATA 6Gb/s ports with RAID 0/1 and 10 arrays being supported. Although the X370 chipset can support up to six SATA ports, obvious space penalties have applied due to the Mini-ITX form factor.

On the rear of the motherboard is a single PCIe 3.0 x4 M.2 slot with M.2 form factor drives of up to M key type 2280 being supported; this slot is NVMe capable and doesn’t share bandwidth from the primary full length PCIe 3.0 x16 slot.

The rear I/O is pretty standard for an ITX motherboard on the AM4 socket, although one major questionable inclusion is the dual HDMI 1.4b ports which are placed side by side. This takes up a considerable amount of the rear panel, which could be ascribed to more USB connectivity - in this case, it is likely that ASRock had a specific customer that needed two HDMI outputs.

USB connectivity coves in the form of two USB 2.0 Type-A ports, three USB 3.0 Type-A ports and a USB 3.0 Type-C port powered via an ASMedia ASM1543 re-driver. Finishing off the rear panel is a combo PS/2 port, a single RJ45 LAN port controlled by the Intel I211AT Gigabit controller, five 3.5mm gold plated audio jacks and S/PDIF output powered by the Realtek ALC1220 audio code,c and two antenna connects for the included Intel 802.11ac Wi-Fi adapter.

In the Box

While there isn't much of a bundle included with the ASRock X370 Gaming-ITX/ac, everything needed to get connected with hard drives or SSDs, as well as connected to a wireless network is included. We get the following:

  • Driver Disk
  • Quick Start  & Software Guide
  • M.2 Drive Mounting Screw
  • Rear I/O Plate
  • Two SATA Cables (One right angled and one straight)
  • ASRock Postcard
  • 2T2R 802.11ac Wi-Fi Antenna

ASRock X370 Gaming-ITX/ac Overview And Overclocking BIOS And Software
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  • 1_rick - Wednesday, April 18, 2018 - link

    On the antenna? Yeah, I made a mistake on my previous post: the antenna wire pulled right out of the plug. Looks like it was only inserted or crimped in by pressure; no solder: the end of the wire is clean and not ragged. I tried pushing it back in but it didn't make a good enough connection; I never good good signal after that. (Oddly, even with both leads plugged in it got poor reception.)

    I'm using one of these now: https://www.frys.com/product/7411565. Keep meaning to buy a second, but the machine runs OK with just one.

    Not sure what's going on with the ethernet port, if it died or if I killed it, although I don't know what I could've done to it. If the wifi didn't work I'd be more concerned.

    My board couldn't run RAM at over 2133-2400 stably until the most recent BIOS updates; now it runs my 3000 ram at 2933 just fine.

    Also these comments inspired me to try OC a bit more--currently I'm running at 4.0 with 1.39375. Games fine; haven't tried a stress test yet.
    Reply
  • The_Assimilator - Thursday, April 19, 2018 - link

    This board exposes 2x 480Mbps (USB 2.0), 2x 5Gbps (USB 3.1/3.1 gen 1), and 2x 10Gbps (USB 3.1 gen 2) USB ports on its IO. The X370GTN exposes 4x 5Gbps and 2x 10Gbps ports. Reply
  • jtd871 - Monday, April 30, 2018 - link

    Check your eyes, sir. Neither this board nor the B350 version claim Gen 2 support. http://www.asrock.com/mb/AMD/Fatal1ty%20X370%20Gam... http://www.asrock.com/mb/AMD/Fatal1ty%20AB350%20Ga... Reply
  • Hifihedgehog - Wednesday, April 18, 2018 - link

    Gavin, despite what manufacturers may say, HDMI 2.0 works on all 300-series motherboards as well. I thoroughly investigated and tested this with Raven Ridge. In fact, my family's current HTPC, with a Ryzen 5 2400G and ASRock AB350 Gaming-ITX/ac, works flawlessly at 4K@60Hz and 12-bit color. The so-called "specification" these motherboard manufacturers list is really regarding certification alone. The ports really are just straight traces to the processor's video outputs. See here for more details:

    smallformfactor (dot) net/forum/threads/raven-ridge-hdmi-2-0-compatibility-1st-gen-am4-motherboard-test-request-megathread.6709/
    Reply
  • John_M - Saturday, April 28, 2018 - link

    I couldn't see the point of paying extra for the X370 version of this ITX board when the B350 delivers exactly the same performance and functionality so I bought the latter. Apart from the chipset used the only difference I can find is the different WiFi card. Does anyone disagree? Reply
  • jtd871 - Monday, April 30, 2018 - link

    That appears to be one of very few differences that I can spot between the official specs for each board. The X370 claims 2T/ 2R on the wifi. The other difference that I noticed was a claimed difference in watercooling support (see CPU section on the respective spec page of each board via AsRock.com). I second your recommendation to get the B350 board as it is significantly less expensive as of this post. Reply
  • John_M - Saturday, April 28, 2018 - link

    What do you mean when you use the term "ambient cooling"? I Googled it and found that it refers to the building of datacentres in locations that are naturally cool so as to save costs on cooling. But what does it mean in the conetxt of this review? Reply
  • John_M - Saturday, April 28, 2018 - link

    There are five 3.5mm audio jacks, not six. Reply
  • John_M - Saturday, April 28, 2018 - link

    You can overclock the iGPU of a Raven Ridge APU in the BIOS, though it's hidden quite deep in the menus of the Advanced page. Reply
  • wswab - Wednesday, February 13, 2019 - link

    HOW DO YOU SET THE (IT WAS ERP READY IN MY GIGABYTE BOARD ) OR WHERE IS SETTING TO STOP USB PORTS FROM STAYING POWERED ON AFTER SHUTDOWN !! LED,S STAY LIT !! HELP APPRECIATED .. Reply

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