ASRock X370 and B350 AM4 Mini-ITX motherboards pictured

ASRock had their hotly anticipated AM4 Ryzen Mini-ITX motherboards in their booth and we were sure to snap some pics of the both of them!

The specs are identical for both models and are as follows:

  • AM4 socket
  • Support for DDR4 3200MHz+ (OC) on Ryzen CPU and 2400MHz on AM4 APU
  • 2x HDMI ports
  • 7.1 channel Realtek ALC1220 HD audio
  • 4x SATA ports
  • 1x M.2 PCIe 3.0 x4
  • 6x USB 3.0 (1x Type-C and 3x Type-A on rear, 2x via internal header)
  • Intel Gigabit LAN
  • Intel 802.11ac + BT 4.2

Edit: Unbuffered ECC RAM is supported!

ASRock X370 Gaming-ITX/ac

Here is the X370 Gaming-ITX/ac and overall I’m pretty pleased with the layout. The 24-pin ATX power connector, USB 3.0 header, front panel header, and SATA ports are along the right side of the board in front of the RAM slots.

The AM4 socket is relatively centered, and there is plenty of clearance around so heatsink compatibility should not be a problem for the most part. The 8-pin CPU power connector is less than ideal, but it could be worse.

There are 3x fan headers including the CPU fan header.

The PCIe 3.0 x4 M.2 port is on the backside of the motherboard above the PCIe slot, you can see the threaded holes to the left of the chipset heatsink in this picture.

I’m not sure if it can be used for aftermarket RGB strips, but these boards do have a header for the RGBs in the AMD Wraith Max heatsink.

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The AB350 Gaming-ITX/ac looks identical to it’s X370 sibling. The only difference I can think of between these two boards is the X370 chipset supports bifurcation so with BIOS support that board could possibly be used with a PCIe splitter.

Edit: Bifurcation is one of the differences between the chipsets, but ASRock does not officially support or validate it. The main difference they told me is potentially better overclockability on X370.

ASRock Ryzen AM4 Mini-ITX rear IO X370 Gaming-ITX/ac

Here’s the rear IO, which is the same on both models:

  • 2x USB 2.0
  • PS/2 port
  • 2x HDMI 1.4b
  • 1x USB 3.0 Type-C
  • 3x USB 3.0 Type-A
  • 7.1 audio connectors
  • Optical audio
  • 2x WiFi antennas

The X370 and B350 chipsets support 2x USB 3.1 (10Gb/s) ports and those two rear USB ports are colored for USB 3.1, so the spec sheet could be incorrect. We’ll follow up with ASRock to verify.

Edit: The spec sheet is correct and USB 3.1 (10Gb/s) is indeed not present. Apparently there are very strict limitations on trace length to use the USB 3.1 off the AMD chipset, and it wasn’t feasible to implement on this board.

According to the rep I spoke with these boards should release “soon” and price will be in ASRock’s typical fashion, so presumably affordable considering the feature set.

Thoughts? Discuss them in the forum here.