Hello! An hour ago I bought this video card and was very surprised by its temperatures, Msi Kombuster easily warms up to almost 70 degrees at 100% rpm of both fans. What nonsense?

Something is up for sure. Air in line or weak pump maybe.

What can I do? How to check?

Post a picture of how you have the rad mounted. Do you hear any noises from the card?

Room Temp ?
 
Case ?
 
Case fans ?
 
Open case side, does temp drop ?
 
Where & how is the radiator mounted ? (intake exhaust / location in the case)
 
what OC settings are you using, if any ?

Sajin
Post a picture of how you have the rad mounted. Do you hear any noises from the card?

Yes, I hear the sound of "dripping water" and I hear the nasty buzzing sound of a pump. The radiator is mounted on the back wall for blowing

Cool GTX
Room Temp ? ~25
 
Case ? Aerocool P7-C0
 
Case fans ? 3*120 on top, 2*140 on top and radiator on back
 
Open case side, does temp drop ? no
 
Where & how is the radiator mounted ? (intake exhaust / location in the case)
 
what OC settings are you using, if any ? win 10 last updates

Do you have the rad mounted with the hoses on the bottom or the top? If top, try remounting the rad so the hoses are on the bottom.

You will get better temp using the Cooler as an intake (coldest room air) over the Hybrids radiator
 
 
"Case fans ? 3*120 on top, 2*140 on top and radiator on back"   
 
Is the 3*120 in the Front or Top ?
 
OC = overclock
 
Are you using EVGA X1 or any other OC software - if you are what settings have you changed ?
 
In your first Post - you mentioned running the fans @ 100%
 
This case ?  Aerocool P7-C0

If you didn't have the rad mounted with the hoses on the bottom, and you corrected that, and are still having problems you could try redoing the thermal paste on the card as the card may have a bad thermal paste application that could be causing the high temp issue. No, reapplying the thermal paste does not void the warranty on the card as long as you don't damage the card in the process.

Sajin
Do you have the rad mounted with the hoses on the bottom or the top? If top, try remounting the rad so the hoses are on the bottom.

I can only fix it this way, otherwise the hoses do not bend or the holes do not match