Intel Z390 Motherboard Overview: 50+ Motherboards Analyzed
by Ian Cutress & Gavin Bonshor on October 8, 2018 10:53 AM EST- Posted in
- Motherboards
- Intel
- MSI
- Gigabyte
- ASRock
- EVGA
- Asus
- NZXT
- Supermicro
- Z390
GIGABYTE Z390M Gaming
The Z390M Gaming as it stands is the only mATX motherboard from GIGABYTE at the launch of the Intel 9th generation processors and shares a similar design to the Z390 Gaming SLI and Z390 Gaming X with a grey and black color scheme which has a red accent on the power delivery heatsink. Like the other pair just mentioned, the Z390M Gaming has dual CPU 12 V ATX power inputs (8 and 4-pin) and looks to have a 12-phase set up like the ATX sized gaming boards. Memory support is much the same too as the Z390M Gaming has four available RAM slots with a support for up to and including 64 GB with a published list of supported memory speeds currently unknown.
In terms of PCIe slots, the Z390M Gaming has two full-length PCIe 3.0 slots which operate at x16 and 4x respectively, with the top slot featuring metal slot reinforcement. The board also includes two PCIe 3.0 x1 slots and the board itself supports up to two-way CrossFire multi-graphics card configurations; virtually the same as the bigger ATX sized Z390 Gaming X. Similar to the aforementioned bigger sibling, the Z390M Gaming has six SATA ports with two right-angled ports and four straight-angled connectors located just below the 24-pin 12V motherboard power input. The board offers two M.2 slots which have support for both PCIe 3.0 x4 and SATA based drives.
On the rear panel, the mATX Z390M Gaming includes two USB 3.1 Gen2 (Type-A and Type-C) and four USB 3.0 Type-A ports. The board has two video outputs which consist of a DVI-D and HDMI port, and also includes a PS/2 combination keyboard and mouse port. A single LAN port is also present which is powered by an Intel I219V Gigabit controller and the six 3.5 mm audio jacks take their direction from a Realtek ALC892 HD audio codec.
The Z390M Gaming looks set to retail for $145 which is a similar price as the Z390 Gaming X ($150), which seems to be its shorter twin sibling and looks to give users looking to build a mATX gaming system an option to consider. Those looking to run two-way SLI on the smaller mATX form factor though will have to look elsewhere due to bandwidth constraints (x4) on the second full-length PCIe 3.0 slot.
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Valantar - Wednesday, October 10, 2018 - link
That would be pretty shocking, yeah, but the sheer size of that lump of metal still has me a bit worried. Guess that's what you get when you try to squeeze power delivery for a CPU that (likely) pulls >300W when overclocked into an ITX board (and refuse to use riser boards like before, for some reason).FXi - Monday, October 8, 2018 - link
The power feed also changed with z390 I believe at least in the Asus models it did. The power feed of the 370 was "enough" to drive the newer 9700/9900 but there is a difference there that may impact enthusiasts. I don't think it enough to warrant an upgrade but something to consider.Also people should remember that while it is still a bit of a ways off, wifi is going to change to Wifi6 or 802.11ax starting now and probably seeing much of the changeover during 2019/2020 depending on adoption choices. And there is also pci-e 4.0 to consider next year probably that should be thought about before people do "marginal" upgrades from 370 era chipsets.
FXi - Monday, October 8, 2018 - link
Silly thing posted in edit window. Sorry power delivery and other points covered by you. Would have edited if I could have found that optionDanNeely - Monday, October 8, 2018 - link
Other things to look forward to in the next few generations are: Less-hacky USB3.1 implementations (eg this articles speculation that a 10g port will need to eat 2 HSIO lanes instead of 1, and still needing an extra chip to support USB-C). Spectre/Meltdown fixes in hardware. A reduced DMI bottleneck between the CPU and chipset (either just from upgrading the link to PCIe4/5, moving some of the peripheral IO onto the CPU, or both.Valantar - Wednesday, October 10, 2018 - link
Considering that the maximum theoretical bandwidth of PCIe 3.0 x1 is 984.6MB/s, you _need_ two PCIe lanes (and thus two HSIO lanes) for a USB 3.1G2 (1.25GB/s) controller unless you want to significantly bottleneck it. That's not "hacky", that's reality, even if this leaves a lot of bandwidth "on the table" if this only powers a single port (which it rarely does, though, and given that a full load on two ports at one time is unlikely, running two 1.25GB/s ports off two .99GB/s lanes is a good solution).Moving DMI to PCIe 4.0 will be good, though, particularly for multiple NVMe SSDs and >GbE networking.
DanNeely - Wednesday, October 10, 2018 - link
Splitting the traffic over 2 HSIO lanes is a hack because it'd require something to split/combine the traffic between the chipset and usbport. That in turn has me wondering if the speculation about the implementation being done that way is correct, or if the Z390 has 6 HSIO lanes that can run 10Gbps instead of the 8 that the rest top out at for PCIe3repoman27 - Thursday, October 18, 2018 - link
The implementation is absolutely not done that way. HSIO lanes are simply differential signaling pairs connected to a PCIe switch or various controllers via a mux. The PCH has a 6-port USB 3.1 Gen 2 xHCI, which can only feed 6 HSIO muxes. The back end of that xHCI is connected to an on-die PCIe switch which in turn is connected to the DMI interface. That DMI 3.0 x4 interface is already massively oversubscribed, but it is at least equivalent to a PCIe 3.0 x4 link, which is the most bandwidth that can be allotted to a single PCH connected device.Srikzquest - Monday, October 8, 2018 - link
HDMI 2.0 is available in Asus and Gigabyte's ITX boards as well.gavbon - Tuesday, October 9, 2018 - link
Thank you Srikzquest; updated the tables, obviously missed this yesterday :) - Thanks againHickorySwitch - Monday, October 8, 2018 - link
Correction:https://www.asus.com/us/Commercial-Servers-Worksta...
It says under "Specifications" that the board sports HDMI 2.0[b?]