Coolant Hotter than CPU

[GamerTrem]

First, the specs:
R9 3900x
ASrock X570 Taichi
EVGA CLC280 AIO
Fractal Meshify S2
2x16G of G.Skill Trident Z Royal at 3600
Gigabyte RTX 2080
5 Noctua 140mm fans (2 on the radiator, 1 pulling from the bottom of the case, 1 rear exhaust, 1 top exhaust)

Now, the issue... EVGA Flow control was having serious issues launching, staying launched, and in general constant instability. I don't know what exactly I did to make it work (uninstalled and reinstalled a dozen times, fresh install of windows, etc) but now it automagically works. Though, now after it has become stable and functioning "correctly" when the ambient tempt drops below 70F/21C and my pc is at idle or very low work loads the CPU reports as cooler than the coolant. Which shouldn't be remotely possible. I do have the radiator mounted to the front of the case so its pulling in fresh cool air. I've seen the CPU go as much as 1.5C cooler than the actual coolant. Adding a load increases the CPU temps above the coolant though. 

I've attempted contacting EVGA, but so far haven't gotten a response. So my question to all of you, have any of you come across this before? Is it a bad sensor in the coolant or on the motherboard maybe? I haven't had any overheating issues at all. My fan curves are pretty strong, and even while gaming, recording, and streaming all at once I never break 80C on the CPU or the GPU even at 1440p for all of the above. Trying to make sure everything runs smooth for the foreseeable future. 

This is the most expensive build I have put together by far, and I might just be over thinking it a bit, but I'd rather get some feed back from others before moving forward from here.

[DoctorNick]

Check CPU temp in HWinfo64

[Streetguru]

5 minutes ago, GamerTrem said:

 

What do you need the software for exactly? Pretty much all software like it is terrible.

Most likely just ignore it and control your fans/pump from your motherboard.

Temp probe inside it, or it's reporting is just bugged.

Check Ryzen Master for actual CPU temps.

[Uptivuptiz]

EVGA's software isn't know to be the most stable and consistant. My guess is that the software is just reading things wrong. In any case, if the software is only a couple of degrees off it doesn't really matter IMO.

[GamerTrem]

1 minute ago, DoctorNick said:

Check CPU temp in HWinfo64

HWinfo64 reports the same as Flow Control.

 

 

4 minutes ago, Streetguru said:

What do you need the software for exactly? Pretty much all software like it is terrible.

Most likely just ignore it and control your fans/pump from your motherboard.

Temp probe inside it, or it's reporting is just bugged.

Check Ryzen Master for actual CPU temps.

Ryzen Master reports the temp the same as Flow Control and HWinfo64

[DoctorNick]

21 minutes ago, GamerTrem said:

Ryzen Master reports the temp the same as Flow Control and HWinfo64

 

What temp are your refering to? Check core#

[Mick Naughty]

Sounds like crap. Doesn’t see why the temp readings are that important in that regard. 

 

Just wait for a new version or try an older one. 

[SpaceGhostC2C]

6 hours ago, GamerTrem said:

 I've seen the CPU go as much as 1.5C cooler than the actual coolant.

LOL, I doubt EVGA's sensor is that precise, wouldn't pay too much attention to such difference.

6 hours ago, GamerTrem said:

Adding a load increases the CPU temps above the coolant though. 

Realistically, these are the temps that matter, so if you get reasonable measurements under load you need not to worry further.

I remember AMD's sensors in Bulldozer & co CPUs reporting ridiculous idle temps (like 7°C in a 20°C room), because their builtin sensor specs made them useless below 30°C-40°C. Under load you would start to get reasonable readings.

 

 

5 hours ago, GamerTrem said:

HWinfo64 reports the same as Flow Control.
 

Ryzen Master reports the temp the same as Flow Control and HWinfo64

They are all hooking up to the same driver for the CPU's sensor, so they just get the same reading. I'm assuming only EVGA's software shows the liquid temperature, though, so no way to cross-validate?

 

5 hours ago, DoctorNick said:

What temp are your refering to? Check core#

He's using Ryzen, so he only has one CPU temp ("package"), "Core" temps will just all be copy-pastes from that number.

[Deuteronomy93]

I don't use this software apart from HWinfo but if your coolant sensor is after your CPU and before the radiator then yes it will report as being hotter.

 

When I was watercooling (moved continents and have to use laptop for now) I honestly didn't pay much attention to the liquid heat, only to individual component heat readings. I typically found that reports from hardware manufacturers than ventured into software with their AIOs (examples below) etc were extremely poor at providing accurate information.

 

EVGA I assume would've been better considering they have experience of MOBO+GPU software (I've never actually owned anything EVGA so don't have firsthand experience) but others say they aren't great, neither are Corsair, NZXT etc.