Having CRAZY CPU temp spikes at idle.

OverclockingNoob1984

Commendable
Aug 10, 2016
5
0
1,510
So this is crazy... I have no idea what is going on. I just switched from a Coolermaster Hyper 212 EVO air cooler to an EKWB Predator 360... and now my CPU is going NUTS with crazy temp spikes and valleys that I have NEVER seen on air. Is this just how water works?

Photos of 2 different logs from MSI Afterburner:

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Screen capture of CPU-Z validator:

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And finally a pertinent parts list:

Processor (CPU)
CPU Name AMD FX™-8350 Eight-Core Processor
Threading 1 CPU - 8 Core - 8 Threads
Frequency 4721.62 MHz (23.5 * 200.92 MHz) - Uncore: 2210.1 MHz
Multiplier Current: 23.5 / Min: 7 / Max: 23.5
Architecture Vishera / OR-C0-Step (32 nm)
Cpuid / Ext. F.2.0 / 15.2
IA Extensions MMX(+), SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4A, x86-64, AMD-V, AES, AVX, XOP, FMA3, FMA4
Caches L1D : 16 KB / L2 : 2048 KB / L3 : 8192 KB
Caches Assoc. L1D : 4-way / L2 : 16-way / L3 : 64-way
TDP / Vcore 125.19 Watts / 1.476 Volts
Temperature 38.4 °C / 101 °F
Type Retail (Stock Frequency : 4100 MHz)

Motherboard
Model Gigabyte 990FXA-UD3 R5
Socket Socket AM3+ (942)
North Bridge AMD RD9x0 rev 02
South Bridge AMD SB910/950 rev 40
BIOS American Megatrends Inc. F1 (03/17/2015)

Graphic Card (GPU)
GPU Type NVIDIA GeForce GTX 970 (GM204) @ 135 MHz
GPU Brand GIGABYTE Technology
GPU Specs GM204-200 / Process: 28nm / Transistors: 5200M / Die Size: 398 mm² / TDP: 145W
GPU Units Shader Units: 1664 / Texture Units (TMU): 104 / Render Units (ROP): 56
GPU VRAM 4096 MB GDDR5 224 bit @ 324 MHz
GPU APIs DirectX 12.0 / OpenGL 4.5 / OpenCL 1.2 / Vulkan 1.0

Any ideas as to why the crazy spikes? Or is it normal, and I just don't know it because I've never water cooled before now?
 

DillonJ3K

Reputable
Feb 22, 2015
350
0
4,960
Did you apply the thermal paste on incorrectly? that can cause issues. Also temp software can bug out some times an show random super high spikes. Takes longer then 1 second to raise 50 degrees an such.
 

Karadjgne

Titan
Ambassador
Looks normal. I'm assuming you run Windows 10 now. With auto updates and all the other background noise win10 generates. If you look at both sides of the charts, the right hand side is cpu usage, the temps on the left and the usage pretty much corresponds with the rise in temps. Win10 did just go through a pretty decent upgrade with the anniversary update, so there's no real telling just what's running or not at any given point. My pc constantly bounces from 32-45 at idle, kraken x61. Not really an issue.
 

OverclockingNoob1984

Commendable
Aug 10, 2016
5
0
1,510
I have removed the EK block and checked the TIM 3 times since I had the Predator... which has only been less than a week since I got it. Each time, coverage is the same... the heat spreader is COMPLETELY covered, and there is no excess TIM on the spreader or on the sides of the CPU. That's why I'm lost. I've done all I know to do to check it...

There is a CPU usage that coincides with the spikes a little bit... but surely on water it wouldn't cause spikes like this would it? And it's not just one program.... HWMonitor, HWInfo64, SpeedFan, MSI Afterburner... all of em show a huge fluctuation in idle temps. It's crazy.
 

OverclockingNoob1984

Commendable
Aug 10, 2016
5
0
1,510
The more I think about it, and the more I look into this as time has gone on... could this be an air bubble problem? Do I need to crack open the fill port on the Predator to see If I can add more water to it? I've ordered a GPU card as well, so that's on the way.

It's still doing crazy sthuff. Is it worth seeing if it needs more water?