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
Professional users looking to purchase an ASUS Z390 board without much of the cost-upping controllers and aesthetics will probably be looking towards the Prime series. The Prime series offers an entry-level jump onto the chipset with bare minimum features, but like the rest of the Z390 chipset, they still support overclocking through the Z390 chipset and look to offer better value overall than the far-reaching gaming targeted boards.
ASUS Prime Z390-A
Starting with the premier entry-level Prime range, the ASUS Prime Z390-A is an ATX sized motherboard and features a white, silver and black design throughout. The board has a white rear panel cover and chipset heatsink, with integrated RGB on both with support for ASUS AURA Sync. The PCB has a white patterning which contrasts quite nicely and represents one of the more subtle looking ASUS Z390 options. The Prime Z390-A has three full-length PCIe 3.0 slots with two getting treated to ASUS Safe slot armor protection and the slots operate at x16, x8 and x4 from top to bottom. This means the Prime Z390-A officially supports two-way SLI and up to three-way CrossFire multi-graphics card configurations.
Memory capability comes from four RAM slots with support for DDR4-4266 and a maximum capacity of up to 64 GB. The storage solutions offered on the Prime Z390-A include two PCIe 3.0 x4 M.2 slots, with only one of them offering support for SATA drives; this seems to be a regular occurrence on the ASUS Z390 line-up. Also included are six SATA ports with the ability to operate RAID 0, 1, 5 or 10 arrays.
This top Prime Z390 model has a total of seven USB ports consisting of three USB 3.1 Gen2 Type-A, one USB 3.1 Type-C, two USB 3.0 Type-A and two USB 2.0 ports. A combined total of six audio ports split into five 3.5 mm audio jacks and single S/PDIF optical output controlled by a Realtek S1220A HD 8-channel audio codec, with a single LAN port being powered by an Intel I219V Gigabit networking controller. Finishing off the rear panel is a DisplayPort and HDMI 1.4b pairing of video outputs, as well as a handy PS/2 keyboard and mouse combo port.
The ASUS Prime Z390-A has an unknown MSRP as of yet and looks to offer users not looking to spending the additional budget on gaming related feature sets and flashy aesthetics; RGB is included on this model and white panels with RGB sets this system up really well from a design perspective. The native integration of USB 3.1 Gen2 into the Z390 chipset has been used well on this board and it looks to be a popular board for users not looking to use a WI-Fi enabled model.
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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?]