help please. New pc overheating on stress test?

[robsjob1]

I just bought a new pc and done a few stress tests on default. Using cinebench, prima 95 and intelburn test. it went right to 80 c and climbing fast to 90s. Confused, i over clocked it to 4.6 ghz at 1.190v and pc smashes cinebench at 50-60c, but on prima 95/burn test it goes to 70 right away and within 5 mins its in the 80s and going up. Im new to this? is this normal? i thought my cooling would be enough? here are my specs:
Intel core i5-8600k cpu @ 3.60ghz 6 core
motherboard: z370 sli plus
ram: ddr4 g skill 8 g x 2
gpu: nvidia 1070
My liquid cooling for my cpu is thermaltake 3.0.
any suggestions? im quite confused thanks.

 

[Anonymouselite5]

Which Thermaltake 3.0 is this? One of the dual rads or the single?

Either way high temps in Prime 95 is normal, it puts more load on the CPU than any usual application will. So the 80's actually isnt too bad.
I would use more practical stability tests though, such as gaming (BF4, GTA5 seem pretty good), 3dmark and Asus's realbench, or even rendering a bunch of videos in Sony Vegas for no reason
Also it seems the more practical stress tests get better results, Prime95 is good for testing heat but even after testing stability in stress tests. When I go to play a quick game or something, my PC still crashes from instability.

Also from what I've read (don't have a 8600k to play around with) people that hit 5ghz-4.9ghz usually have the voltage around 1.32v+ and hit over 90C in stress tests. So it still seems like a rather toasty CPU.

Short Answer: 80's are fine for a test such as Prime 95.

 

[robsjob1]

Which Thermaltake 3.0 is this? One of the dual rads or the single?

Either way high temps in Prime 95 is normal, it puts more load on the CPU than any usual application will. So the 80's actually isnt too bad.
I would use more practical stability tests though, such as gaming (BF4, GTA5 seem pretty good), 3dmark and Asus's realbench, or even rendering a bunch of videos in Sony Vegas for no reason
Also it seems the more practical stress tests get better results, Prime95 is good for testing heat but even after testing stability in stress tests. When I go to play a quick game or something, my PC still crashes from instability.

Also from what I've read (don't have a 8600k to play around with) people that hit 5ghz-4.9ghz usually have the voltage around 1.32v+ and hit over 90C in stress tests. So it still seems like a rather toasty CPU.

Short Answer: 80's are fine for a test such as Prime 95.

hey its the duel rads thanks for your response. i pushed it to 4.8 but it got little toasty for me haha. Is there any other way i could oool it down much further? like where do i go from here? is water cooling the whole pc that much different?

 

[Finstar]

That's Intel for you. You could try re applying the thermal paste and if that doesn't work then delid or downclock is in order.

 

[Anonymouselite5]

Which Thermaltake 3.0 is this? One of the dual rads or the single?

Either way high temps in Prime 95 is normal, it puts more load on the CPU than any usual application will. So the 80's actually isnt too bad.
I would use more practical stability tests though, such as gaming (BF4, GTA5 seem pretty good), 3dmark and Asus's realbench, or even rendering a bunch of videos in Sony Vegas for no reason
Also it seems the more practical stress tests get better results, Prime95 is good for testing heat but even after testing stability in stress tests. When I go to play a quick game or something, my PC still crashes from instability.

Also from what I've read (don't have a 8600k to play around with) people that hit 5ghz-4.9ghz usually have the voltage around 1.32v+ and hit over 90C in stress tests. So it still seems like a rather toasty CPU.

Short Answer: 80's are fine for a test such as Prime 95.

hey its the duel rads thanks for your response. i pushed it to 4.8 but it got little toasty for me haha. Is there any other way i could oool it down much further? like where do i go from here? is water cooling the whole pc that much different?

What'd voltage did you get in the end at 4.8ghz? and what temps?
Water cooling the GPU as well, and if you kept your current cooling on your CPU. Shouldn't make that much difference if your case airflow is good. Maybe a few degrees if you're stressing both. Water is good for moving heat from the component to the radiator. So unless you're exhausting all your GPU heat out through your radiator. It should be fine.

Also yup, if you really want to you could go out and buy some Arctic silver thermal paste and reseat your cooler. Seen about 2 degrees difference in some cases. When going from cheapo stuff to arctic.
Other than that, change the fan curve for your radiators to be more aggressive and Im not sure on the Thermaltake cooler, but just make the pump run 100% all the time. They're usually quiet.