Z390 Taichi Ultimate 10GbE network overheating?

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   Hi!

In two weeks after installing 10GbE network 3 times it stopped working with 'network cable unplugged' error. Reinstalling drivers, rebooting windows did not help. When switching the cable to 1GbE port it was working normally, so the other side should not be in fault. Intially I thought that I have dead 10GbE network, but it started to work after cold boot (shutting down computer and restarting). 

One common thing was that network stopped working after few hour gaming sessions or runing PCU heavy simulations. This made me think about overheating, as my 10GbE network adapter gets quite hot and I assume the onboard chip is not much different. The onboard chip heatsink is under VRM heathins and enclosed within plastic cover - this certanly does not help with cooling.

So week ago took of the plastic cover and mounted 60mm fan blowing on the 1/3 of chip radiator that is visible (the rest is under VMR heatsink). Havn't got any network problems since then. 

While this is not definite proof, it is quite suspicious. I have i9 9900k CPU, running on default settings, but VMRs get quite hot under CPU load, so I imagine that might lead to heating up the compartment the network chip heatsink is enclosed in.

I'll keep this post updated, but if I will not have any network shutdowns in future, I will have to assume that overheating was the problem.

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wiper Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 08 Jan 2019 Status: Offline Points: 24	Post Options Post Reply Quote wiper Report Post Thanks(0) Quote Reply Posted: 08 Jan 2019 at 8:24pm
	Hi! In two weeks after installing 10GbE network 3 times it stopped working with 'network cable unplugged' error. Reinstalling drivers, rebooting windows did not help. When switching the cable to 1GbE port it was working normally, so the other side should not be in fault. Intially I thought that I have dead 10GbE network, but it started to work after cold boot (shutting down computer and restarting). One common thing was that network stopped working after few hour gaming sessions or runing PCU heavy simulations. This made me think about overheating, as my 10GbE network adapter gets quite hot and I assume the onboard chip is not much different. The onboard chip heatsink is under VRM heathins and enclosed within plastic cover - this certanly does not help with cooling. So week ago took of the plastic cover and mounted 60mm fan blowing on the 1/3 of chip radiator that is visible (the rest is under VMR heatsink). Havn't got any network problems since then. While this is not definite proof, it is quite suspicious. I have i9 9900k CPU, running on default settings, but VMRs get quite hot under CPU load, so I imagine that might lead to heating up the compartment the network chip heatsink is enclosed in. I'll keep this post updated, but if I will not have any network shutdowns in future, I will have to assume that overheating was the problem.