ASUS Maximus Z890 Extreme Intel 285K question

[rosenbergm]

Hello I have a question for the community regarding CU-DIMM. I'm currently in the process of building a new rig after 10 years currently on a i7-6850k and EVGA 980TI Classfieds so it's time to upgrade. 

I plan on getting a Z890 Maximus Extreme motherboard, I already have the 285k the memory I was thinking about getting the G.Skill 9000MT CU-Dimm kit now with the the most recent bios will I have any problem running this memory kit with this motherboard of course I would have to turn on XMP in order to get the 9000 speed but has anyone had an issues recently trying to run 9000MT on the extreme with the 285k. PSU will be 1600W 80+ Titanium from seasonic so I am sure power wont be an issue the case will be an Lian Li O11 Dynamic Evo XL I will have a front mesh kit so I can have three more fans as intake on the front GPU will be an Astral 5090 (when I can get it) in upright kit with two more fans exhausting/exchanging air from behind the GPU. Will have a Corsair H170i AIO in push/pull exhausting from the top also a 285k contact frame and kyrosheet for the cpu and two more fans exhausting from the rear and three fans on the bottom also as intake so I'm hoping cooling wont be an issue either. Does anyone see any problems with the memory not running on this mobo at 9000mt thank you in advance 

[svukelich]

I have the same motherboard and processor. It has taken me a month to find all of the issues because I tried to reuse older hardware and save some money. First, my 6-year-old battery backup was on its last legs and needed to be replaced (it stopped working). Second, my 7-year-old power supply (Corsair 1600) was getting long in the tooth and I suspected was a problem, so I replaced it too. Finally, my Corsair DDR5-8400 CUDIMM occasionally threw errors and would not pass the memory test. I fixed it by slowing the memory to DDR5-8000. With these changes, everything is stable and has been running error-free. Be cautious of older components that may also need an upgrade and it may take a lot of time to figure out what is wrong; in my case, it was multiple things.