1080 Ti Hybrid randomly overheating to MAX

[CrazySajan]

I have a EVGA 1080ti FE with installed EVGA Hybrid kit. I had this set up for over a year. My idle temp is around 25 degree of Celsius and under full load its around 52. Fans are set on auto.

Few days ago when I turned on my computer and started doing web browsing I have noticed that radiator fan started to speed up almost to 100% and GPU temps started to raise dramatically.

I turned of my computer and 2 min. later turned it back on. Everything was fine. Day later same situation. Right after turning on PC the temps on video card started to go up, fans speeded up and it got really loud. When I turned on video game and put GPU under stress my temps were rising 1 degree of Celsius per second, until 90 ( than video card got turned off ). In idle state fans were around 70% and temp. was around 60 degrees. I restarted computer few times but still idle temps were around 60. I turned it off for 5 min, turned back on and …..everything was fine again.

EVGA representative told me that my Hybrid kit does not work properly and I need new one. My warranty is expired. Do you think he was right, or there may be another problem?

-I have cooler master HAF - X full tower. All fans and case are being cleaned once a month.
- All drivers are up to date
-I am using EVGA Precision with fans set on auto - latest version.
-I tried to move water cables to eventually move a air bubble or something
- Temp in my room is around 70
- CPU is cooled by other closed loop cooling with no problems.

So far this situation happened to my 3 times within maybe 10 days.

 

[techgeek]

Sounds like the pump is stopping on your EVGA Hybrid kit. If it's the kit I found, it doesn't look like there is a fill port on the radiator so it's unlikely that you can service it yourself.

I have a Glacer 240L AiO kit and the pump stopped on it. My CPU overheat right away. This kit has a fill port and can be taken apart and serviced. I was able to fix it. There was almost like sand (I suspect corrosion / hard water) in the water block. I was able to clean it up and get the impeller freed up and spinning smoothly.

You could try and take the water block apart and see if there is gunk, crystals, corrosion in the pump assembly. Without a fill port it might be tricky refilling it though. It's failing now, so you can't make it worse than it is at this point.

 

[CrazySajan]

Yeah, there is no pump. Just radiator and fan. So the EVGA guy was right than. The best way would be to replace the whole kit right?

Do you have any idea why it only happens once in a while?

 

[techgeek]

There has to be a pump, but it's usually built in to the heatsink. From the pictures of the kit I found, there are two cables coming out of the heatsink.
One will be for monitoring the RPMs on the pump and a PWM signal for controlling the speed of the pump, the other will be the power to the pumpWhen the pump doesn't work, the fluid doesn't circulate the hot fluid away from the heatplate to be cooled in the radiator.

If it's the pump the best option is to replace.

 

[CrazySajan]

You were right. I replaced the whole kit and everything is back to normal. This kit is better than the previous one because they upgraded the way that memory is cooled. Now they added water block that is also touching the memory to keep it cooler. Before it was cooled only by the fan. Nice upgrade. I was able to overclock memory over 100 MHZ to 700MHZ and Base clock to 190Mhz (10Mhz more that on previous kit).

 

[techgeek]

Glad you got it all sorted out.