i7 6700k with Corsair H100i v2 overheating as high as 100º C

[mercador]

Guys, hello.

I am facing an overheating problem with my custom build. My build composition is as follows:

• 
  CPU: Intel - Core i7-6700K 4GHz Quad-Core Processor
  CPU Cooler: Corsair - H100i v2 70.7 CFM Liquid CPU Cooler
  Thermal Compound: Arctic Silver - 5 High-Density Polysynthetic Silver 3.5g Thermal Paste
  Motherboard: Asus - ROG MAXIMUS VIII HERO ALPHA ATX LGA1151 Motherboard
  Memory: G.Skill - Ripjaws V Series 32GB (2 x 16GB) DDR4-3200 Memory
  Storage: Samsung - 950 PRO 512GB M.2-2280 Solid State Drive
  Storage: Mushkin - Reactor 1TB 2.5" Solid State Drive
  Storage: Seagate - Barracuda 3TB 3.5" 7200RPM Internal Hard Drive
  Video Card: MSI - GeForce GTX 1080 8GB GAMING X 8G Video Card (2-Way SLI)
  Video Card: MSI - GeForce GTX 1080 8GB GAMING X 8G Video Card (2-Way SLI)
  Case: Corsair - Vengeance C70 (Black) ATX Mid Tower Case
  Power Supply: EVGA - SuperNOVA G2 1300W 80+ Gold Certified Fully-Modular ATX Power Supply

My CPU is manually overclocked at 4.6ghz on 1.28v through BIOS.

I started to face cpu temperatures as high as 100 degrees Celsius while gaming. I tried disassembling my build and reapplying the thermal paste last night, with no luck.

Today I used AIDA64 Extreme System Stability Test to stress test my CPU and these are the results:

Fans distribution:

• 
  two intake on the front
  one intake on the side panel
  one exhaust on the rear
  two exhaust on the top (attached to H100i v2's radiator)

I am feeling lost right now and any help will be greatly appreciated. Ask me any questions if there is more information to be provided.

 

[feelinfroggy777]

I suggest resetting the bios to factory defaults for starters. When you are having heat issues like this, there is no point in testing with an OC.

At 100C your system is thermal throttling. A 6700k should not hit 100C with an OC at 4.6 and vcore at 1.28volts. There is an issue with the cooling. Can you hear the pump running on the h100i? What does corsair link say for your pump speed? The pump could be out. I also assume the fans are spinning on the radiator?

 

[mdd1963]

Assuming the pump is properly secured/locked down to cpu's heat spreader, then either the pump is not plugged in, or, the pump has died.

SLap on a Noctua, call it a day

 

[mercador]

I suggest resetting the bios to factory defaults for starters. When you are having heat issues like this, there is no point in testing with an OC.

At 100C your system is thermal throttling. A 6700k should not hit 100C with an OC at 4.6 and vcore at 1.28volts. There is an issue with the cooling. Can you hear the pump running on the h100i? What does corsair link say for your pump speed? The pump could be out. I also assume the fans are spinning on the radiator?

Assuming the pump is properly secured/locked down to cpu's heat spreader, then either the pump is not plugged in, or, the pump has died.

SLap on a Noctua, call it a day

Guys, thanks for your answers.

I went back to the BIOS and I have reset it to factory defaults as per your suggestion.
I have again used AIDA64 Extreme System Stability Test to stress test my CPU. This time I decided to also stress test local disks and my two GPUs. These are the results:

You can also see below a screenshot of the Corsair Link software during the System Stability Test. Hence, I believe we can confirm that the water cooler is working as expected, correct?

Moreover, a screenshot of the HWInfo software that was running in the background during the stress test

These new results bring me more questions

Considering that I am using a supposedly very good water cooler, shouldn't the temperatures be lower?

More specifically, what temperature should I be aiming at?

I can't understand how AIDA64 show a maximum CPU temperature of 76 ºC while HWInfo show a maximum CPU temperature of 95 ºC (Core Max). Why is that?

 

[ElectrO_90]

I had a huge problem with my h100 and temps went to 100'C
To prove that it was the pump, I just touched the pipes leading to the cooler and they were extremely warm to touch.
Changed to h115i and wow, its a world of difference, as the h115i is so quiet...
Anyway, touch the pipes near the pump and see how it goes...

 

[mercador]

I had a huge problem with my h100 and temps went to 100'C
To prove that it was the pump, I just touched the pipes leading to the cooler and they were extremely warm to touch.
Changed to h115i and wow, its a world of difference, as the h115i is so quiet...
Anyway, touch the pipes near the pump and see how it goes...

I am starting to think that my H100i v2 have some sort of problem. I just connected the pump cord to the w_pump header on my motherboard and I connected the two radiator fans to the cpu_fan and cpu_opt headers, respectively. Even though now my pump rpm show as 3200rpm in Corsair Link, doing stress tests gives me almost the same temperature results.