Intel Core i7-7700K OC temperature with H100i v2

s_a_badhon · Feb 21, 2017

I recently bought the intel core i7-7700K along with Asus ROG Strix Z270F motherboard and Corsair H100i v2 aio cooler. My cpu in now set to 4.8GHz and the vcore is 1.23 set in bios. Corsair Vengeance LPX 8x2GB memory frequency set to 3000MHz and the DRM voltage is 1.332 set in bios. But I'm a bit confused with the CPU TEMPERATURE as I'm new to water cooling.
In idle condition the H100i v2 water temperature show 34-35C (in quiet mode). But it goes to 40C after 15-20 minutes of gaming (gta v, bf1) and the fans start spinning really loud, then cool down a bit, and after some times same thing repeats. Though cpu temperature remains between 65-75C. But in IntelBurnTest cpu temperature remains around 90C even in performance mode of H100i v2. While converting or rendering HD video cpu temperature reaimns between 70-80. Also the high rpm of the radiator fans don't have any effect on cpu temperature. My case is CM Mastercase pro 5 with two masterfan pro air balance as intake and one air balance as exhaust.
Is this temperatures normal? Or is there anything wrong with the aio cooler?

The_Staplergun · Feb 22, 2017

First I would never run over 80c. Anything over 80c and you're damaging your chip.

Second, use prime95 v26.6 using the "most heat" setting. I think it's called small FFTs. This will give you a realistic temp under high load. Do not let that temp exceed 80. If it does your oc is too high. As far as performance that's normal. Faster fan speeds doesn't necessarily mean more cooling on a radiator. It's a weird concept. It's the fan PQ curve. Check it out.

These chips run hot. It's the nature of the beast. Sounds like yours is doing what mine is. If you want to, get thermal paste and reseat the pump. When you take the pump off make note of how it looked and make sure to clean it with some form of ethyl alcohol.

Use about a snow pea sized amount of thermal paste. Tighten in an X pattern.
Snug one corner down lightly, then the opposite corner. Then snug a corner beside that one and then across. Then go back around and hand tighten them all in the exact same pattern.
Take a screw driver and give a slight turn until you meet some resistance. Shouldn't be a lot. You don't need the board flexing. Just snug them up until it's a little tougher to turn them.

If you did all that, then you should be good. Just test with prime95.

When I first got mine, my Mobo was jacked up. Had to take the cpu off when the RMA was done and put it on the new board. When I did that I lost corsairs pre placed thermal paste and had to use my own. I saw a decent change in temp. About 5-7c.

Dragos Manea · Feb 22, 2017

Did you set the cpu fan at 100% in bios? this is very important.

The_Staplergun · Feb 22, 2017

The pump controls the fans. Corsair link controls the pump.

Dragos Manea · Feb 22, 2017

But the voltage for the pump is controled by the cpu fan header, if the header applies a low voltage the pump may mailfunction or worst die.

The_Staplergun · Feb 22, 2017

That pin is just so the cpu doesn't think the system has no fan, because it won't boot. It draws it's power from the 12v Sata power adapter.

Fan speeds are based on the pumps internal temperature sensor.

The system will work on its own with default settings without corsair link or the USB header plugged in, but it helps and you can set custom settings.

Don't you have one of these ? Your build says you do...you should know this.

Dragos Manea · Feb 22, 2017

Sorry to say but the h100i v2 does not have any sata power adaptor, it takes the current from the cpu fan header.

s_a_badhon · Feb 22, 2017

The_Staplergun :

First I would never run over 80c. Anything over 80c and you're damaging your chip.

Second, use prime95 v26.6 using the "most heat" setting. I think it's called small FFTs. This will give you a realistic temp under high load. Do not let that temp exceed 80. If it does your oc is too high. As far as performance that's normal. Faster fan speeds doesn't necessarily mean more cooling on a radiator. It's a weird concept. It's the fan PQ curve. Check it out.

These chips run hot. It's the nature of the beast. Sounds like yours is doing what mine is. If you want to, get thermal paste and reseat the pump. When you take the pump off make note of how it looked and make sure to clean it with some form of ethyl alcohol.

Use about a snow pea sized amount of thermal paste. Tighten in an X pattern.
Snug one corner down lightly, then the opposite corner. Then snug a corner beside that one and then across. Then go back around and hand tighten them all in the exact same pattern.
Take a screw driver and give a slight turn until you meet some resistance. Shouldn't be a lot. You don't need the board flexing. Just snug them up until it's a little tougher to turn them.

If you did all that, then you should be good. Just test with prime95.

When I first got mine, my Mobo was jacked up. Had to take the cpu off when the RMA was done and put it on the new board. When I did that I lost corsairs pre placed thermal paste and had to use my own. I saw a decent change in temp. About 5-7c.

I bought the system just one week ago, and these cooler come with pre-applied thermal paste. So do you think changing the thermal paste will do any good???
Also, can you suggest me good but silent radiator fans? These fans are like jet engine in rpm above 1600!!

s_a_badhon · Feb 22, 2017

Dragos Manea :

I did, but regardless the water temp, pump speed and radiator fan speed, CPU Temp goes to 90C in IntelBurnTest even when water temp is 32C and the fan are in full rpm. What is wrong here??

Dragos Manea · Feb 22, 2017

Bad contact. if water temp is 32 and cpu 90 then you got a bad contact or a dead pump, do you see water pump rpm in corsair link? If there is a rpm for the water pump then you did not install it correctly. One more thing you can try is rma the corsair. My oc i7 6700k never goes above 54 degrees and when it is 54 degrees water temp is 42 degrees.

s_a_badhon · Feb 22, 2017

Dragos Manea :

In corsair link it says pump rpm 2880-2910 (performance mode)
I have lowered the vcore manually to 1.15 and core ratio to auto (4.5 in turbo)
kept the drm voltage and frequency to 1.3332 and 3000MHz respectively. Now in IntelBurnTest the cpu temp stays around 78C (80C max).
Just played Battlefield 1 for 30 minutes, cpu temp stayed around 68 (Occasionally 70) but the water temp was initially 34 and rose upto 40.
So is it because of bad contact or bad pump???

Dragos Manea · Feb 22, 2017

I still think it is a bad contact between the pump and the cpu, the temperature should be much lower.

s_a_badhon · Feb 22, 2017

Dragos Manea :

So I should reinstall the cooler replacing the thermal paste?

Dragos Manea · Feb 22, 2017

Yes, if that does not solve your problem then is something wrong with the cooler or the cpu.

The_Staplergun · Feb 22, 2017

Intel burn test isn't licensed or run by Intel. It's just used for them.
Use prime95 v26.6 to test thermal loads.

s_a_badhon · Feb 22, 2017

The_Staplergun :

I left everything auto in bios and ran prime95 for 10 minutes and it already hit 93C and stayed between 80-90C most of the time with the pump and fan in max rpm. And also my idle never goes down than 40C.
So I guess there's definitely something wrong!!

The_Staplergun · Feb 22, 2017

Try reseating the pump. Test temps again with prime95 v26.6.

If this doesn't work, and you feel frisky, you can do it one more time and verify where the grease went to see if you did the tightening right.

If that doesn't work, lower your overclock. It's too high. These chips run hot. You could also try changing out for a h115i if it fits in your case. It's made of slightly different material. Mine can dissipate enough heat at 4.8ghz with a 1.34 voltage (much higher) to stay at 80c or lower.

Stop running your chip over 80c. If it goes over 80c it's not going to do anything but go up. You're going to burn it up if you keep doing that. If it goes over 80c, stop the workers or burn test immediately and try the above.

I understand that the thermal throttling is much higher than 80c, but at 80c you start frying things.

s_a_badhon · Feb 22, 2017

The_Staplergun :

yeah, I changed everything to default setting and in prime95 temps are still crossing 80C, so I'm gonna reseat the cooler tomorrow and see what happens. Thanks for all the advices

The_Staplergun · Feb 22, 2017

Yeah, definitely try that especially at stock. At stock it should run quite a bit cooler, being below 70c at the very most.

s_a_badhon · Mar 6, 2017

The_Staplergun :

So I changed the Thermal Paste, re-attached the cooler, set the core clock to auto, cpu, vcore is 1.180 and the temps didn't change... H110i water temps remains 33C in idle
in prime95 cpu temp remains between 75-85C, 80C+ usually and even hits 90 while water temp ramins upto 37C.
Radiator fan speeds don't affect the cpu temp!
So is there something wrong with the cooler or there is a problem with the installation or it is the chip?
I'm so confused and it's really frustrating now

The_Staplergun · Mar 6, 2017

What's your rooms temperature?

s_a_badhon · Mar 6, 2017

The_Staplergun :

I keep it between 24-30C

The_Staplergun · Mar 6, 2017

That could be why.

My room temp is around 22c or less.

Whatever your room temp is will DIRECTLY add to your cpu operating temp.

s_a_badhon · Mar 6, 2017

The_Staplergun :

I'll try tomorrow with 22C room temp then.
But Please tell me your oc settings, voltages basically...

The_Staplergun · Mar 6, 2017

Every single chip varies. I'm at 4.8 with 1.280 volts running around 65-70c based on load. I sit anywhere from 22-26c at idle.

Your numbers will most certainly vary from mine.

Intel Core i7-7700K OC temperature with H100i v2

Prominent

Estimable

Splendid

Estimable

Splendid

Estimable

Splendid

Prominent

Prominent

Splendid

Prominent

Splendid

Prominent

Splendid

Estimable

Prominent

Estimable

Prominent

Estimable

Prominent

Estimable

Prominent

Estimable

Prominent

Estimable

Share this page