7700k temps with corsair H100i V2 cooler- Are they Normal?

nic8good

Commendable
Mar 11, 2018
7
0
1,510
Hello all,

I'm having an issue with my h100 v2 cooler (Corsair). I have just installed a new CPU- 7700k (as my last-6600k was defective and i wanted to upgrade anyway) and i have also reset my PC and done a clean windows install. BTW i also re-applied the thermal paste (i see this advice a lot when discussing watercooler temps).

Since then the cooler has not been showing in the windows device manager(it may have not shown up before this but i never noticed). This would not necessarily be an issue however i am aware that the 7700k runs at a high temp (higher than my old 6600k) and i want to do everything i can to ensure it is being cooled correctly (especially as it is OCed and i plan on keeping it for a long time). I have read everything i can find regarding the issue and performed all the recommended fixes, however none of these have worked.

E.G:

1) Installing old version of corsair link.
2) Editing the regedit file (i couldn't even find the correct file as it wasnt named anything like what the guide suggested).
3) Checked connections and connected the usb cable from the h100 to an external usb port.
4) Looked in device manager for driver errors (H100/any corsair driver is not listed).
5) There are likely other things that i cant remember, I've been trying to fix this for a couple of days)

I think the problem is that the USB cable connection on the h100 v2 is broken, however this is not an issue IF the pump is working correctly. I think the pump is working based of my temps (they stay fairly constant and don't just keep rising) and the fact that the corsair LED turns on but i'm not certain as i am new to the 7700k temps.

Temps for CPU(4.8 oc at 1.235 vcore):
Idle:34-39c (temps spike to 50-55 when apps opened)
Gaming(e.g. BF1 at max 1080p settings): up to 68c
Aida64 stress test: up to 89c (stopped after 15 mins as i didn't want the temp to spike any higher or the cpu to maintain such a high temp range)


I've read others have gotten far higher temps but my vcore is fairly low and my cooling/fan setup has always been great on my 6600k (1 intake, 1 exhaust and both H100 fans acting as intake). I'm worried that the pump is broken and holding back my CPUs potential to be further OCed.

Basically my questions are:

1) Are these temps normal with a 7700k and h100i v2?

2)What are the signs of a defective pump?(i know my h100 fans are working as i can control them in Bios, i'm only concerned with the pump)

3)Can you suggest any better coolers for the 7700k?(or is it just imposible to run the 7700k cool without deliding?)


Any help/advise would be great, I've tried to supply all useful info(sorry for the long post) but please let me know if I've missed something. Please also do not suggest deliding- i know its an option but at this point i am only concerned with the H100 and its pump (i may consider deliding it later when i need more performance).

BTW i just wanted to say thanks to all who contribute to this website, while this is my first post i have referred to this site on numerous occasions and it has nearly always helped me find the answer i needed.

UPDATE: After continued research (into h100i USB issues rather than pump issues) it looks like the h100 v2 does not require the USB connection to work (unless you want to edit its settings in Corsair link- I really should have known this prior to making this post). However i am worried that its inability to work with the USB Cable is a sign of some fault. Do my temps look OK? i'm guessing that they would be far higher if the pump wasn't working and they would remain high consistently. Any opinions are welcome, Thanks.
 
Solution
If the pump was bad, you'd see immediately high temps in the BIOS.

That said, your pump may not be installed correctly. The one thing that I've not seen you mention is if you set the CPU Fan header that the pump is connected to to full speed/100%. The particular pump is powered by the fan header and requires a full 12v at all times. Not setting the fan header to 100% means that you won't get the full 12V going to the pump. It won't operate properly without that.

Your fans should be connected to the pump. However, you do not control them in the BIOS. If you think that you are controlling the fans in the BIOS, you are actually reducing the voltage supplied to the pump. This does have a secondary effect of altering the fan speed but...

devbiker

Commendable
Dec 9, 2017
326
3
1,215
If the pump was bad, you'd see immediately high temps in the BIOS.

That said, your pump may not be installed correctly. The one thing that I've not seen you mention is if you set the CPU Fan header that the pump is connected to to full speed/100%. The particular pump is powered by the fan header and requires a full 12v at all times. Not setting the fan header to 100% means that you won't get the full 12V going to the pump. It won't operate properly without that.

Your fans should be connected to the pump. However, you do not control them in the BIOS. If you think that you are controlling the fans in the BIOS, you are actually reducing the voltage supplied to the pump. This does have a secondary effect of altering the fan speed but only because the pump isn't getting the power that it needs.

Check out this FAQ: http://forum.corsair.com/v3/showthread.php?t=174442. Lots of info there on your cooler and troubleshooting issues.

As far as the temps go, they do sound normal. Your max temp is a little high but that's likely to do with the crappy TIM that Intel uses. You won't fix that without delidding.
 
Solution

nic8good

Commendable
Mar 11, 2018
7
0
1,510


Thanks for the response, I forgot to mention that i had already disabled the fan control in the bios so that the pump is always getting the full 12V/running at 100% but thanks for the clarification (iv also reinstalled the cooler several times). I think i just needed confirmation that all was OK- I've read that these temps are fairly standard, though it still sucks that they are so high.

It's good to know that my temps would immediately rise if there was a pump issue, the only reason i thought there might be was that the h100 wasn't detected by windows, however i don't really care as long as its working.

Also thanks for the link its really useful and covers all my questions (I just noticed you wrote it so thanks for that as well). To confirm: i think my h100i's usb cable port is broken, but the pump must be working based off your link and answer.

Thanks again and all the best.