High idle temps on 5820k @ stock with EKWB Predator 240mm - Overclock.net

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post #1 of 4 Old 07-24-2016, 10:40 PM - Thread Starter
 
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Hi all, I have consistently had high temps with my new 5820k build, usually idling in 40, or 41c with no overclock. However, I updated my bios today and they have suddenly gone up sitting at 44 or 45c (based on AIsuite readings, and bios fan control set to standard). I know most people say only load temps count, and I will include those, but this just seems worrying to me. If anyone has any ideas or reasons behind this please let me know.

Things to note:
-My Phanteks Evolv ATX case does not have the greatest airflow where I have my AIO exhausting out the top right now.
-I usually use AI Suite 3 to control my fans, leaving it at standard on CPU fan control, and usually only fiddling with the case fans.
-All benchmarks and temps were taken with all fans at their full speeds.
-Forgive me, these benchmarks are short
-All temperatures given will be the MAX temp recorded during that benchmark, all benchmarks took place 15 minutes apart with the fans on full
-Room of the testing is 23.9c, 75f

Idle and with fans at max for 20 minutes
AISuite CPU temp: 36c
CPUID HWMonitor: CPU)45c Core0)42c Core1)41c Core2)39c Core3)41c Core4)38c Core5)40c Package)44c

Prime95 "blend" for 20 minutes, fans at full speed
AISuite CPU temp: 61c
CPUID HWMonitor: CPU)71c Core0)70c Core1)70c Core2)71c Core3)71c Core4)70c Core5)68c Package)71c

AIDA64 "Stress CPU" test for 20 minutes, fans at full speed
AISuite CPU temp: 45c
CPUID HWMonitor: CPU)56c Core0)55c Core1)53c Core2)54c Core3)54c Core4)52c Core5)52c Package) 55c



My build
CPU: 5820k @ 3.6
Cooler: EKWB predator 240 (w/ stock thermal paste. Set in the top of the case as an exhaust)
Mobo: ROG STRIX X99 gaming (do not recommend this board. Already had to receive a new one after it fried my last 5820k. This is my first and last x9 build and I did not realize all the issues (00 q code error) Asus boards have with crapping out and frying the cpu)
Memory: 64gb Gskill @ 2133
GPU: GTX 1080 founders
Case: Phanteks Evolv ATX tempered Glass edition (with 3x Noiseblocker NB-eLoop Series B-12-2 120mm Bionic Loop Rotor Fan, 1300rpm, 17 dBA on the front)
PSU: EVGA G2 1000w
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post #2 of 4 Old 07-25-2016, 05:36 AM
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those temps are not unreasonable. i would say it's fine.

also prime95 is not a good tool to test cpu's anymore as it overstresses the cpu, in a lot of cases your cpu (should) overheat from it because a lot of motherboards "adaptive" voltage settings will give it more than a standard amount of voltage from such a stress test.

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post #3 of 4 Old 07-25-2016, 04:58 PM
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Leave Prime 95 alone for X99.

240mm Rad needs to be Set as Intake (Not Exhaust) Coolest air from outside of the case needs to be brought in through the rad for "Better" performance (Whether that be 1C or 10C Better)

TCO
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post #4 of 4 Old 07-25-2016, 09:43 PM
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Those temps seem reasonable (in my experience water cooling a 5820k). Might try reseating the water block on the CPU, and swapping out thermal paste (making sure to apply correctly and such), might make temps go down a bit. As the others have said, prime95 on an X99 CPU can be a bit much - I wouldn't recommend using it as a gauge to see how high temps get. Switching the rad to intake should lower temps at least a little as well, since it'll be pulling in cooler air than what's inside the case.

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