Question Help with Arctic Liquid Freezer II 280, AND cooling a 5800X3d

[maddthom]

I recently upgraded to a 5800X3d and my PC started crashing, just shutting down without warning, my thought was it hit a thermal limit and shut down to protect itself. My Liquid Freezer II 280 was very warm, so I swapped it to this cheap 240mm AIO and my PC stopped shutting down, this lead me to believe that my Liquid Freezer II was broken. I wanted to test it, so I set up a little test bench for, a PC power supply, a PWM fan hub from Amazon and a Thermoelectric(TEC) cooler to supply a heat load, this is what I saw.

I could feel the heat from the TEC cooler heat being pumped thru the AIO(so the pump is working fine???)
The Liquid Freezer II cooled the well enough for ice to form on the cold side of the TEC
The Top Rad fan ran, bottom Rad fan would spin intermittently
Using the Arctic Liquid Freezer II 280 fan headers, I could see the Rad fans RPM fluctuate

This has lead me to believe that the Arctic Liquid Freezer II's internal fan controller is broken, because of the above issue's and--->

when I use the PC PWM fan Hub to control the Rad fans, they run great, AND they have alot more RPM/Airflow

I bought a ID Cooling Frostflow X 280 but I'm seeing CPU temps hit the 80's, I would rather use the Liquid Freezer II because of the thicker Rad and Fan on the pump. The CPU temps seem high to me, I knew it would run hotter than my old 3900 but 85C seems too close to the thermal limits, I would think the Liquid Freezer II would be better at cooling a 5800X3d because, while testing it, it cooling the TEC, it would become a block of ice within 2 hours of sitting on my bench. I would take any help or advice given on the Arctic Liquid Freezer II and cooling a 5800X3d, I want to send this Frostflow back to Amazon before the return window closes, thank you.

 

[CountMike]

I recently upgraded to a 5800X3d and my PC started crashing, just shutting down without warning, my thought was it hit a thermal limit and shut down to protect itself. My Liquid Freezer II 280 was very warm, so I swapped it to this cheap 240mm AIO and my PC stopped shutting down, this lead me to believe that my Liquid Freezer II was broken. I wanted to test it, so I set up a little test bench for, a PC power supply, a PWM fan hub from Amazon and a Thermoelectric(TEC) cooler to supply a heat load, this is what I saw.

I could feel the heat from the TEC cooler heat being pumped thru the AIO(so the pump is working fine???)
The Liquid Freezer II cooled the well enough for ice to form on the cold side of the TEC
The Top Rad fan ran, bottom Rad fan would spin intermittently
Using the Arctic Liquid Freezer II 280 fan headers, I could see the Rad fans RPM fluctuate

This has lead me to believe that the Arctic Liquid Freezer II's internal fan controller is broken, because of the above issue's and--->

when I use the PC PWM fan Hub to control the Rad fans, they run great, AND they have alot more RPM/Airflow

I bought a ID Cooling Frostflow X 280 but I'm seeing CPU temps hit the 80's, I would rather use the Liquid Freezer II because of the thicker Rad and Fan on the pump. The CPU temps seem high to me, I knew it would run hotter than my old 3900 but 85C seems too close to the thermal limits, I would think the Liquid Freezer II would be better at cooling a 5800X3d because, while testing it, it cooling the TEC, it would become a block of ice within 2 hours of sitting on my bench. I would take any help or advice given on the Arctic Liquid Freezer II and cooling a 5800X3d, I want to send this Frostflow back to Amazon before the return window closes, thank you.

There was a problem with certain LF2 coolers

View: https://www.youtube.com/watch?v=jHdEqWpexH0