Hi All,
Long time lurker, 1st time Poster, so here it goes.....
The Thread title explains the problem pretty well, but to elaborate: My system has a Z490Msi Mobo and I have the Corsair AIO H150i RGB PRO XT pump securely fastened to the i9-10850k CPU and the 3 Corsair fans that came with it plugged into the three ports on the cable coming from the pump and the pump plugged in to the CPU_FAN header. All the fans worked, they were 4 pin fans into 4 pin connectors off the pump, but seemed to just run at a constant speed.
After powering the PC on within minutes the temperature went to 80+ degrees, and it watching full screen 4k video, not even gaming the temperature would push 100 and HWInfo64 reported some throttling due to the heat. iCue Software, MSI Center and BIOS settings didn't have any settings that provided an adequate solution. I had one chassis fan secured to the inside roof of the case that started making noise on start up, so it was time to replace it. I knew the 10850 had a reputation for running hot, but not like this. As I was doing so and straightening up the cable management, I had the realization that one thing I hadn't tried yet was plugging the Corsair AIO fans straight into the motherboard instead of the cable off of the pump and attached them to headers SYS_FAN1, SYS_FAN2, and SYS_FAN3.
There was a night and day difference as soon as I powered it up and went into the bios. Not only did they spin faster and louder, but they also responded to the BIOS Smart Fan Control settings when before they seemed stuck in DC mode instead of PWM. Now the happy ever after part: Now, the fans stay low, around 800 rpms until the temperature rises enough to call for higher speeds and the CPU fan reading,(for the pump) isn't pinned at 100% now (again it seemed like it was stuck in DC mode for some reason, and the CPU Core temp stays around 42-45 degrees under idle or ight work conditions and doesn't even get to mid-70's under a decent load. It's crazy how much more responsive it is now and the CPU_Fan reading hovers at around 33-35% instead of being stuck at 100%, which I imagine couldn't have been good for the lifespan of the pump. So now I just have my fingers crossed that the throttling mechanism of the CPU protected me from myself and the inadequate cooling it was receiving for little over a year and that the pump will still have a decent lifespan after being run at 100% for that time.
The problem had bugged me for that whole time as I knew the CPU shouldn't run that hot but just couldn't figure out why. I saw a post on here describing the same situation, same brand and realized this may be a thing. Then when I saw how many Corsair AIO overheating threads there are I knew I should detail my experience of it here in hopes that it'll save some others the time, mental energy and possibly their hardware that running a high end pc with inadequate cooling can bring.
I'm theorizing that it's an issue with the amps put out by the pump as that would determine fan speed and obviously the fans weren't getting enough connected to the pump, but do when connected to the mobo. I don't know if it's an equipment flaw, or inadequate instructions but it definitely runs A LOT better connected the way it is now over the way described in the manual.
Hope this helps someone that has been stumped by their overheating and that it helps you to utilize your build's true potential.
Live long and build well.
Long time lurker, 1st time Poster, so here it goes.....
The Thread title explains the problem pretty well, but to elaborate: My system has a Z490Msi Mobo and I have the Corsair AIO H150i RGB PRO XT pump securely fastened to the i9-10850k CPU and the 3 Corsair fans that came with it plugged into the three ports on the cable coming from the pump and the pump plugged in to the CPU_FAN header. All the fans worked, they were 4 pin fans into 4 pin connectors off the pump, but seemed to just run at a constant speed.
After powering the PC on within minutes the temperature went to 80+ degrees, and it watching full screen 4k video, not even gaming the temperature would push 100 and HWInfo64 reported some throttling due to the heat. iCue Software, MSI Center and BIOS settings didn't have any settings that provided an adequate solution. I had one chassis fan secured to the inside roof of the case that started making noise on start up, so it was time to replace it. I knew the 10850 had a reputation for running hot, but not like this. As I was doing so and straightening up the cable management, I had the realization that one thing I hadn't tried yet was plugging the Corsair AIO fans straight into the motherboard instead of the cable off of the pump and attached them to headers SYS_FAN1, SYS_FAN2, and SYS_FAN3.
There was a night and day difference as soon as I powered it up and went into the bios. Not only did they spin faster and louder, but they also responded to the BIOS Smart Fan Control settings when before they seemed stuck in DC mode instead of PWM. Now the happy ever after part: Now, the fans stay low, around 800 rpms until the temperature rises enough to call for higher speeds and the CPU fan reading,(for the pump) isn't pinned at 100% now (again it seemed like it was stuck in DC mode for some reason, and the CPU Core temp stays around 42-45 degrees under idle or ight work conditions and doesn't even get to mid-70's under a decent load. It's crazy how much more responsive it is now and the CPU_Fan reading hovers at around 33-35% instead of being stuck at 100%, which I imagine couldn't have been good for the lifespan of the pump. So now I just have my fingers crossed that the throttling mechanism of the CPU protected me from myself and the inadequate cooling it was receiving for little over a year and that the pump will still have a decent lifespan after being run at 100% for that time.
The problem had bugged me for that whole time as I knew the CPU shouldn't run that hot but just couldn't figure out why. I saw a post on here describing the same situation, same brand and realized this may be a thing. Then when I saw how many Corsair AIO overheating threads there are I knew I should detail my experience of it here in hopes that it'll save some others the time, mental energy and possibly their hardware that running a high end pc with inadequate cooling can bring.
I'm theorizing that it's an issue with the amps put out by the pump as that would determine fan speed and obviously the fans weren't getting enough connected to the pump, but do when connected to the mobo. I don't know if it's an equipment flaw, or inadequate instructions but it definitely runs A LOT better connected the way it is now over the way described in the manual.
Hope this helps someone that has been stumped by their overheating and that it helps you to utilize your build's true potential.
Live long and build well.