overheating issue detected in i7-8700K at 1.20V and above, Corsair H115i recommended
overheating issue detected in i7-8700K at 1.20V and above, Corsair H115i recommended
Hello,
I recently installed my new i7-8700K on the AsRock Z370 Extreme 4 MOBO. My cooler is Corsair H115i, and I used thermal paste Noctua NT-H1. The initial load temperatures were acceptable until I began overclocking. I saw some YouTube videos suggesting it's safe to reach 1.35 V on this chip. However, when I do so, the overheating becomes extreme, reaching close to 100 °C.
I attempted to reapply the paste using the pea method, but that didn’t help. The radiator fans spin at 2000 rpm, and the pump is set to performance mode. Corsair Link shows 2900 rpm on the pump. If I lower the voltage to 1.2 V, the system remains stable at 4,8 GHz, though during AIDA64 stress testing, Core #1 can spike to 85 °C for a brief moment. Any setting above 1.2 V results in temperatures exceeding 90 °C after some time.
What might be causing this? It seems unusual... or perhaps I’ve lost the silicon lottery completely?
Thanks,
Tomas
At 4.8GHz I anticipate the 8700K reaching around the 80's degrees C, and indeed you have a solid CPU since a 1.2v boost is excellent for a 4.8GHz overclock. Spikes on the 8700K are typical. An offset adaptive vcore could slightly improve stability.
I faced a similar problem but opted for a delid solution. Now I enjoy a consistent 24/7 4.9GHz overclock at 1.278v, with temperatures dropping 18 degrees C – a huge improvement and much less stress than expected, completing it in about 30 minutes using Thermal Grizzly conductonaut and an affordable delid kit from EZ Starts. Just a thought...
Not every CPU chip overclocks equally—it depends on the chance of getting one that performs well. In multi-core processors, different cores might overclock at varying rates. Your observations seem typical.
I understand, but could I experience such a situation severely?
At 4.8GHz, I anticipate the 8700K reaching the 80's degrees C and you're right, it's a solid CPU with a 1.2v boost being excellent for a 4.8GHz overclock. Spikes on the 8700K are typical. An offset adaptive vcore could slightly improve stability. I faced similar problems but opted for a delid solution, achieving a stable 24/7 4.9GHz overclock at 1.278v with a drop of 18 degrees C in temperatures—significantly better and much less stressful than expected, completing it in about 30 minutes using Thermal Grizzly conductonaut and an affordable delid kit from EZ Starts. Just a thought...
At 4.8GHz, I anticipate the 8700K reaching the 80's degrees Celsius and you’re right, it’s a solid CPU with a 1.2v boost being excellent for a 4.8GHz overclock. Spikes on the 8700K are typical. An offset adaptive vcore could slightly improve stability.
I faced a similar problem but opted for a delid solution, achieving a stable 24/7 4.9GHz overclock at 1.278v—temperatures dropped by 18 degrees Celsius, which was impressive and much less stressful than expected. It took only about 30 minutes using Thermal Grizzly conductonaut and a budget delid kit from EZ Starts.
Thanks for the advice! I’m happy with my results and might try the delid method too. Is it really safe?
At 4.8GHz, I anticipate the 8700K reaching the 80's degrees C and you're right, it does have a solid CPU with a 1.2v boost being excellent for a 4.8GHz overclock. Spikes on the 8700K are typical. An offset adaptive vcore could slightly improve stability.
I faced the same challenge but opted for a delid solution and now enjoy a consistent 24/7 4.9GHz overclock at 1.278v, with temperatures dropping 18 degrees C—great improvement and much less stress than expected in just about 30 minutes using Thermal Grizzly conductonaut and an affordable delid kit from EZ Starts.
Just a note...
Thanks for the advice! I’m happy my setup is fine. I might try the delid method too. Is it really safe?
No issues at all. Regarding the delid process... I was hesitant at first, but many guides on YouTube made it much simpler than I imagined. Just be patient—it works.
Some people offer it for a small fee, but doing it yourself is very rewarding!
At 4.8GHz, I anticipate the 8700K reaching the 80's degrees Celsius and you're right, it does have a solid CPU with a 1.2v boost being excellent for a 4.8GHz overclock. Spikes on the 8700K are typical. An offset adaptive vcore could slightly reduce those fluctuations.
I faced a similar challenge but opted for a delid solution. Now I have a stable 24/7 4.9GHz overclock at 1.278v, with temperatures dropping by 18 degrees Celsius – a significant improvement. It was much less stressful than expected, lasting only about 30 minutes using Thermal Grizzly conductonaut and an affordable delid kit from EZ Starts. Just a thought!
Thanks for the advice! I'm pleased my results are stable. I might try the delid method too. Is it really safe?
No issues at all. Regarding the delid process...I was apprehensive initially, but many guides on YouTube made the process much simpler than I anticipated. Just take your time – it should work fine.
Some people offer it for a small fee, but doing it yourself is very rewarding. Haha, I get it! Every time I build a PC and it functions perfectly, it feels great.
Indeed, others charge a modest amount for the service, but personal experience shows it's highly satisfying to handle it yourself.
At 4.8GHz, I anticipate the 8700K will reach the 80's degrees Celsius and you’ll notice a solid CPU performance since 1.2v is excellent for a 4.8GHz boost. Spikes on the 8700K are typical. An offset adaptive vcore could slightly improve stability.
I faced a similar challenge but opted for a delid solution. Now I have a consistent 24/7 4.9GHz overclock at 1.278v, with temperatures dropping about 18 degrees Celsius—a significant improvement. It was much less stressful than expected, lasting only around 30 minutes using Thermal Grizzly conductonaut and an affordable delid kit from EZ Starts.
Thanks for the advice! I’m happy my results are stable. I might try delidding as well. Is it risky?
No issues at all. Regarding delidding... I was in a similar situation and initially hesitated, but once I started, it was surprisingly simple. Many good tutorials on YouTube show how to perform the delid on an 8700K, and it turned out easier than I anticipated. Just take your time—it’ll work fine.
Some people offer it for a small fee, but doing it yourself is very rewarding. Haha, I get it! Every time I build a PC and it works, it feels great.
In my country, there’s someone who does it for around $50, which is roughly the cost of a delid device here. So I might choose that route.
Can I expect a solid improvement?
I can assure you there will be a noticeable difference. The temperature drop was impressive—far more than expected. It’s definitely worth the investment for a high-performance 8700K overclocked to its limit.
Well, yes, but I’ve already achieved 4.8 GHz. If I delide it, could I push it up to around 5.1 GHz? Honestly, the 0.1 GHz difference seems negligible compared to the $50 cost.