Supermicro MBD-C9Z390-PGW-O Motherboard LGA 1151 (300 Series) Intel Z390 DDR4 SATA 6GB/s M.2 U.2 DisplayPort HDMI 10G LAN Wi-Fi USB 3.1 RGB ATX, MBD-C9Z390-PGW-O

Update 9-10-19: Been running a I9-9900k @ 5.1 all core overclock on a D15 air cooler. Completely stable. I really mean completely 100% stable. I run a number of different processing intensive tasks that can take 20-30min per. On my previous Asus 4770k, the system would sometimes crash running these tasks with more than a mild OC. The SM board has not crashed once, and its quiet as well.Ive run Supermicro boards since Pentium II days. The boards still boot up. They have always had a reputation as an excellent hardware manufacture. They use quality components and multi-layer pcb board designs. I have build many servers using SM hardware, servers that stay up for years and dont ever crash with ECC memory.I was excited to try SM for my desktop build. When SM got out of the desktop mainstream game around Pentium D, I started using Asus for my desktop builds. Ive was reasonably happy with Asus workstation boards, but the gaming boards have never been quite as stable. Enter the SM C9Z390; I was eager to try this board after hearing the board was designed in and supported from the USA, had 10gbe and a plx pci-e switch.I had an initial issue with the board loading the latest bios. A quick call to SM support got me connected to the engineer who designed the board (something that would never happen with other mainstream brands). 20min later, the new bios was loaded and the system was running. I am very impressed with the support from SM as always. This system has been rock stable running i9-9900k @ 5.2 all core on a Noctua NH-D1, 32gb of cl-14 g.skill ripjaws ram and RTX2070.SM wants to break into the overcrowded desktop gaming market. This is the most solid board on the market bar non. The detail on the board, the tracings, VRMs, its all top notch.Pros:Top notch hardware designStateside design and supportStableFeatures, 10gbe, PLX, VRMsHandles the power hungry i9-9900k OC with eaze.Bios gives access to all parameters for advanced OC and tuning the boardWill outperform your friends builds when setup correctlyCons:Light community support for less experienced overclockersAuto OC software not as mature as AsusSupermicro C9Z390-PGW A++. SM, I would be happy to test out anything you come out with in the future!

I have had nothing but problems with this board.The board advertises that it is compatible with memory up to 4200 Mhz. I put my 3733Mhz memory into the board (COSAIR CMK64GX4M4K3733C17), but it wouldn't even post under the XMP settings, the bios giving me a error code that there was no memory detected. OK, maybe it'll run at a slower speed. I was never able to get it to post past 2133 which is the default setting, even after I spent hours trying to find timings/voltages/speeds that would post. That kit of memory worked fine in XMP in a z370 board that I had and "upgraded" from.Thinking a bios update might help, I went to the website, downloaded the bios and flashed it. At no point did anything warn me that the bios I was flashing was actually older than the bios the board shipped with. But it was several months older. I eventually contacted supermicro's tech support and was able to convince the tech to send me a new bios. He said that sometimes the webmaster is slow to update the website. The bios he sent was actually newer even than the stock bios and the changelog mentioned that it fixes crash bugs. Seems like an important update to have. You need to update your website Supermicro! I was still unable to get the memory to post at any higher than 2133. I should mention that the memory comparability list for this board has very few compatible modules (at least at decent rated speeds), and only Gskill was tested faster than 2666mhz. I guess I have hope that a future bios update will add compatibility, but I'm not going to hold my breath.All the while, I was experiencing instability. The bios would sometimes freeze, so to would the OS. I tried to fix this problem for hours and finally found something that seems to work. I believe the problem is that the voltage curve that Supermicro supplies is too conservative, and my 9900k was getting too little voltage to be stable even at stock frequencies. It's possible that it was a problem with the integrated graphics getting too little voltage by default as that is what I was using. The system became stable after applying +50mv to the Vcore. (again this is with stock settings. I don't need to overclock). The same CPU was rock solid with stock voltages in my older board. Stability seems good so far with +50mv.Every time the system would reboot, these loud "musical" beeps would come out of the integrated speaker. It was too loud, but there was no way for me to disable the sound. I eventually put a piece of tape over the speaker. This helped a little bit, but it was still loud enough to annoy my wife sleeping a couple of rooms over.The reason I chose this board was to build a deep learning rig. I wanted to utilize the PLX chip (pci-e bridge) to install 4 GPUs at 8x8x8x8x. If this had worked well, I would have said that it was all worth it. But it simply didn't work out. GPU scaling was very poor when more than two GPU's were installed. Nvidia settings did show the 3 GPU's at 16x8x8x and 4 GPU's at 8x8x8x8x, but even when I was training on only 2 gpus I experienced a 40% reduction in training speed when 3 or 4 slots were occupied (even if the other two were idle). Those same 2 gpu's performed well in x16x16 mode, and they also perform well in x8x8 mode on a regular z370 board without a PLX chip. After all my tests, I've decided that the PLX chip simply doesn't help at all for deep learning.Moral of the story: this board is all around bad. It's just a headache. Not only that, the PLX chip doesn't work well for deep learning. For deep learning you will have to bite the bullet and build an x299 or threadripper system.

The board boasts "HDMI 2.0" but it's only 2.0a and the LSPCon that's being used to convert DisplayPort to HDMI (a Parade PS175) doesn't support HDR. If you plan to use the HDMI port on this board at all, like I did, don't bother with this board. There are others out there that support HDMI 2.0b and HDR.Also, this board ships in a box for a different board. That's apparently Supermicro corner cutting standard practice.

ゲームはしませんが、BIOSを1.3にアップしてからは安定して使えています。