i7 8700k stock with Corsair H80i v2

[vercetti80]

Hello,

since some months ago I bought this processor in pair with the liquid cooler from Corsair ( H80i v2)

The processor is stock and when idle it stays ( 32 - 38 celsius), when gaming, in some games varies around 50 - 55c (PUBG) and in Rainbow Six Siege and Battlefield - around 65 - 68c, sometimes it goes even 71 - 72c, which scares me, because the processor is at stock speeds, and with a high-end liquid cooler.

I saw people with near identical coolers, such as H100i , H110i or even low-budget ones that make the same temps, but on overclocked 8700k and -10 to 15c on stock.

Maybe I did something wrong with the placement of the cooler, maybe something with the connection of the cables to the MOBO, I don't know... That's why I'm writing to you

My other specs are:

Asus Maximus X Hero

G.Skill Trident Z RGB 2x8GB 3200Mhz

PSU is EVGA SuperNova 850 P2.

My case is NZXT Phantom 410 with three additional coolers.

I would be thankful to you if can give me some advice regarding this.

Thank you

 

[dragonstar914]

A liquid cooler will not necessarily keep a CPU from reaching high temps but it will remove the heat faster than air coolers in general. Anything 80c and under is fine to run a CPU at long term. Even spikes into the 90's is fine. You could check and make sure that the plug that runs the pump is on a header that is running at full speed. At 32-40c idle and staying under 80c full load with out an overclock those temps seem fine to me. If you are hitting 70c+ with a heavy load it's fine. FYI I wouldn't call a Corsair cooler high end, its just an good grade AIO.

 

[TJ Hooker]

I saw people with near identical coolers, such as H100i , H110i or even low-budget ones that make the same temps, but on overclocked 8700k and -10 to 15c on stock.

Were those people running the same loads as you, with similar ambient temperatures? Did they manually crank up their rad fan speed? Is it possible they delidded the CPUs?

Also, don't believe everything you see on the internet. I see so many people posting on Tom's with unrealistic expectations for something because they saw some guy on youtube or whatnot say/do something.

Edit: Oops, I failed to notice you're comparing the performance of your 120 mm cooler vs 240 mm coolers. That would explain a lot.

 

[geofelt]

Not to worry.
The cpu will slow down or shut off to prevent damage if it detects a dangerous temperature.
That is around 100c.

8700K starts with a high clock rate, and under full load can get hot.
It is the vcore needed to sustain a given multiplier that generates heat.
That will vary by the quality of your chip.
Most will do 5.0 at a vcore of 1.4 which is the most you should contemplate.
Monitor your vcore with cpu-Z while you are running.
Normally, you will run out of safe vcore before you run into thermal limits.

I do not consider a H80 as a high end cooler.
Think about it, the radiator and 120mm fan has no more cooling surface than a typical air cooler with a 120mm fan.
The only difference is where the heat exchange takes place.

How did you mount the radiator?
It is catch 22.
If you orient it to take in cool air from the outside, you will cool the cpu better, but the hot air then circulates inside the case heating up the graphics card and motherboard.
If you orient it to exhaust(which I think is better) , then your cpu cooling will be less effective because it uses pre heated case air.
Past that, A AIO radiator complicates creating a positive pressure filtered cooling setup which can keep your parts clean.
If all your cooling air comes in from the front two 120mm fans and is filtered, your parts will stay clean.
I might mount the h80 to exhaust air and be done with it.
Added fans will draw in unfiltered air from nearby openings.

If you truly want a top end cpu cooling solution, buy a noctua NH-D15s to replace the H80.

 

[TechyInAZ]

Just because the H80i V2 is 2x thicker than the H100i v2 doesn't mean it'll cool better. More horizontal space = better cooling than more vertical space. I'm not saying it doesn't help having a thicker rad, but generally if you have a wider radiator than a smaller rad but it's thicker rad, the wider rad will win.

So that's normal for the H80i since it's just a glorified 120mm radiator.

 

[mdd1963]

71-72C is nothing for an 8700K, most would be quite happy with those temps under an actual gaming load...

 

[bmockeg]

A h100 or h110 is not near identical to a h80. 240-280mm coolers are much better in dissipating heat. You are actually overclocking the chip due to its programmed boost settings. I would have advised against buying a 120mm AIO for an 8700k. Your current temps are fine and you are getting normal results for that level cooler.

 

[Karadjgne]

Heat is dissipated partially in accordance to actual surface area. The greater the surface area, the more heat can be dissipated. In simplistic terms, even though it's assumed to be a double thick radiator, the H80 isn't, nor are any of the other 'double thick' rads. A h100 for instance is 25mm thick x 240mm long x 120mm wide. Not going into the specific dynamics of all that, figure that 720,000 sq.mm. The H80 by comparison is 38mm thick x 120mm wide x 120mm long or 547,200 sq.mm.

There's going to be a difference in ability, some of which is compensated by differences in airflow between a push/pull fan, fan speeds, fan curves, ambient temps, liquid temps, liquid volume, pump rates, airflow and a host of other variables you couldn't possibly duplicate to that YouTube video.

 

[vercetti80]

Not to worry.
The cpu will slow down or shut off to prevent damage if it detects a dangerous temperature.
That is around 100c.

8700K starts with a high clock rate, and under full load can get hot.
It is the vcore needed to sustain a given multiplier that generates heat.
That will vary by the quality of your chip.
Most will do 5.0 at a vcore of 1.4 which is the most you should contemplate.
Monitor your vcore with cpu-Z while you are running.
Normally, you will run out of safe vcore before you run into thermal limits.

I do not consider a H80 as a high end cooler.
Think about it, the radiator and 120mm fan has no more cooling surface than a typical air cooler with a 120mm fan.
The only difference is where the heat exchange takes place.

How did you mount the radiator?
It is catch 22.
If you orient it to take in cool air from the outside, you will cool the cpu better, but the hot air then circulates inside the case heating up the graphics card and motherboard.
If you orient it to exhaust(which I think is better) , then your cpu cooling will be less effective because it uses pre heated case air.
Past that, A AIO radiator complicates creating a positive pressure filtered cooling setup which can keep your parts clean.
If all your cooling air comes in from the front two 120mm fans and is filtered, your parts will stay clean.
I might mount the h80 to exhaust air and be done with it.
Added fans will draw in unfiltered air from nearby openings.

If you truly want a to

p end cpu cooling solution, buy a noctua NH-D15s to replace the H80.

https://ibb.co/hPvMyo

https://ibb.co/b2rGW8

https://ibb.co/mL8Vr8

https://ibb.co/hqE3B8

https://ibb.co/eX5h4T

Hello,
as you can see, this is a picture of the cooler, the cable is put on AIO_PUMP ( I read somewhere it should be in the CPU_FAN, I really don't have a clue which is the right one.)

Also I shot the actual fan settings in my bios.

Please, if you find anything wrong here and that I must make some changes, right it down.

Thanks in advance!

 

[devbiker]

Putting the cooler on the CPU Fan header prevents a CPU Fan warning at startup. You will, however, need to put the CPU_FAN header at 100%/Full Speed.

Beyond that, one challenge many folks have with the H80i V2 is that they mount it directly in the path of their GPU waste heat, which winds up heating up the coolant. This, in turn, raises the baseline temperature for the CPU (coolant at 40C can only cool your CPU to 40C while coolant at 34C can cool your CPU down to 34C).

You also cannot compare the H80i V2 to the H100i V2. Sure, they have the same pump header but the cooling capacity of the radiator on the H100i V2 is significantly better. Plus, the placement of the radiator tends to mitigate some of the issues with GPU waste heat that we see with most H80i V2 mounts.