Supermicro C9Z390-CG-IW

The fourth and final Supermicro board from the quadruplet of Z390 motherboards is the smaller sized C9Z390-CG-IW. The C9Z390-CG-IW as the name suggests takes a lot of the important elements from the ATX sized C9Z390-CG and puts it in a mini-ITX sized frame. There is a full-length PCIe 3.0 x16 slot with steel slot reinforcement and the board also includes two PCIe 3.0 x4 M.2 slots; one on the front and one on the rear. Also included are four SATA ports which feature straight-angled connectors.

Usually with mini-ITX motherboards, one of the minor benefits is faster memory support due to the shorter tracks, but Supermicro is advertising the C9Z390-CG-IW to support up to DDR4-3866 which is the same as the other models barring the C9Z390-PGW which offers up to DDR4-4133.  The C9Z390-CG-IW also looks to have just two 4-pin fan headers which are, unfortunately, one of the pitfalls with the mini-ITX form factor; less space usually means fewer features and headers.

Controller wise the board is using a Realtek ALC1220 HD audio codec to power the five 3.5 mm audio jacks and S/PDIF optical output on the rear, an Intel I219V Gigabit controller for the single LAN port and a dual-band 802.11ac wireless networking adapter is also included. The rest of the rear panel is comprised of three USB 3.1 Gen2 Type-A, one USB 3.1 Gen2 Type-C, two USB 3.0 Type-A ports, a PS/2 combo port and a pair of display outputs consisting of a DisplayPort 1.2 and HDMI 2.0 ports.

The Supermicro C9Z390-CG-IW is the smallest of the four Z390 SuperO series motherboards and is designed to retain the similar power, performance and feature characteristics of the C9Z390-CG, but in a more compact mini-ITX frame. Most of what has been said looks to be true, but the obvious pitfalls come with a smaller and seemingly lower specification power delivery. This model does however retain the single 8-pin 12 V ATX CPU power input and the specifications indicate the same TDP support with up to a maximum of 120 W officially support from the CPU. The pricing and availability of the C9Z390-CG-IW is yet to be announced.

Supermicro C9Z390-CG Choosing The Right Z390 Motherboard
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  • DanTMWTMP - Thursday, October 11, 2018 - link

    Are they ALL made in China? What happened to the ones made in Taiwan from a few gens ago? :/
  • gavbon - Friday, October 12, 2018 - link

    Unfortunately, I cannot confirm this. The ASRock Z390 Taichi I have in my hands says 'designed in Taipei', but that's about it.
  • Nagorak - Sunday, October 14, 2018 - link

    Gigabyte apparently has a factory in Taiwan. It seems all the rest moved production to China.
  • WickedMONK3Y - Friday, October 12, 2018 - link

    The MEG Z390 Godlike looked like such an interesting board until I checked the MSI Specifications page and realised it actually does not have the PLX chip as suspected. The PCI Express slots on the board are configured as 16x / 4x / 8x / 4x instead of 16x / 16x / 8x / 4x or 16x / 8x / 16x / 4x. It seems after PLX sold to whomever owns them now, that the price hike stopped their usage on consumer boards completely.

    I really really hope somebody comes out with a board that has a PLX chip on board.
  • gavbon - Friday, October 12, 2018 - link

    The Supermicro C9Z390-PGW has a Broadcom 8747 PLX PCIe switch :)
  • ZioTom - Friday, October 12, 2018 - link

    It would be a nice touch including in next MB review what pheriferals stop funcioning when too much PCI-E lanes are used. Some motherboards disable SATA ports when M.2 slot are used; others may require limiting bandwith to one PCI-E slot... etc. Before byuing a motherboard I would like to be warned that is not possibile to use all the features they are advertising.
  • happyfirst - Friday, October 12, 2018 - link

    I wish we would get better thunderbolt support. Only one board has it built in? I'm thinking of a Taichi board and see a Thunberbolt AIC connector in the manual, but then I can't really find enough good quality posts of people having success putting it to use. I'd like to get a new external nvme ssd thunderbolt drive to run my vms off of so I can more easily take them on the road with me and use from my notebook.
  • ddcc - Saturday, October 13, 2018 - link

    Certain Gigabyte boards, e.g. Z390 Aorus Pro WiFi, seem to be using Intel's Z390 CNVi, but aren't listed in the article.
  • gavbon - Monday, October 15, 2018 - link

    I'm going to be updating tomorrow with more information; been working on getting one of the board reviews ready for the end of the week :)
  • gavbon - Sunday, October 21, 2018 - link

    Will be adding these in tomorrow (not at a PC currently) - We didn't have the information available prior to writing

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