H80i issues - help

user100monkey · 31 Jan 2015 at 22:43

Hi,
Recently purchased an H80i, and unfortunatly had nothing but issues with it.

Its to use with a new build i5 4690k

It worked fine for first 24hours then i was getting terrible temps

i5 4690k stock 100% usage temp went from 57c to 67c, i opened up the case to notice that one of the mounting screws had bent, OCUK did a great job RMA.

New h80i has arrived and getting:

i5 4690k stock idle temp of 27c
i5 4690k stock load temp of 57c

I have reseated the heatsink, what i have noticed is that when i un do the thumb screws the presure of the pipes is pulling the heatsink away from the CPU. Also when running prime for 20mins the heatsink and pipes are completly cool.
The H80i water temp never goes beyond 30c whilst the cpu is at 65c, does this mean i have poor contact between cpu and heatsink and should i try reseating for a 3rd/4th time?

skaif · 31 Jan 2015 at 22:49

when you say pressure of the pipes is taking it away what do you mean? How is it mounted? Perhaps take some pics?
The pipes are stiff on a h80i so do require the thumb screws to be tightened pretty well in order to seat it correctly. Mine cools my 4790k at similar temps to yours so I wouldn't worry too much

user100monkey · 31 Jan 2015 at 23:09

"tightened pretty well" how much force are you applying? Do you just use your thumbs or finish with screw driver?

skaif · 31 Jan 2015 at 23:56

Personally I took it as far as I could with my hands and then a sharp turn with a screw driver.

ScoTTyBEEE · 1 Feb 2015 at 11:41

you shouldn't really need to use a screwdriver, thumb tight should be fine.

Look at the water temp, I guess you can do this with the software. Your cpu temp would differ from the water temp if it needed tightening down further. At idle the cpu should be the same temp as the water.

user100monkey · 1 Feb 2015 at 12:47

Thanks for the replies guys, just couldn't get back to you until now.

Image showing all system temps including h80i water temp at 0% load

Image showing all system temps including h80i water temp at 100% load

Also have another issues with the build, posted here but no replies yet
http://forums.overclockers.co.uk/showthread.php?p=27564720#post27564720
i5 4690k refuses to downclock using intel speedstep, any ideas?

user100monkey · 1 Feb 2015 at 13:33

i realize that the information i have upload is a bit hapzard and not in the best format but i attribute that to looking after the kids

i thought i would do a quick overclock to get an idea of the h80i taking heat away from a hotter cpu.
overclocked to 4.4ghz and 1.175 voltage

CPU went up to 73c, h80i water only to 32.5 but the h80i fans where more active.
Should i reseat the h80i or is this the expected performance of the unit? Its just i am sure the orginal unit i had before RMA reported the h80i water temp around 50c, nearer matching the i5s temp

ScoTTyBEEE · 1 Feb 2015 at 13:48

Those temps are fine. The water will take ages for the temperature to rise when you're running 100%, that's why I'd say it's better to check at idle.

If anything the fact your water temp is 18.5 degrees at idle is really good. Mine with all my fans set to low is 31. My max cpu temp is around yours, this is with an X40 kraken.

If you want to see your water temp at 50 then game for a while, the graphics card (depending on setup) will chuck a load of heat into the case.