You're facing issues with overheating on your ASUS motherboard when using an i7 8700k.
You're facing issues with overheating on your ASUS motherboard when using an i7 8700k.
Hello, here are your queries about overclocking the CPU.
I have the following details:
Model: z370-F Strix
CPU: I7-8700K
Cooler: NZXT x62
GPU: GTX 1070 Strix
RAM: Corsair Vengeance 2x8 at 3000MHz
Power Supply: EVGA 750W GQ
Configuration: Manual and adaptive voltage
I reached a stable reading of 1.280V at 5GHz using manual voltage, but now I’m trying to switch to adaptive mode so the voltage drops when idle. When I input 1.280V and power on, the voltage jumps to about 1.490V. I’m confused about this behavior.
I looked up some community discussions and found several tips:
- Adaptive settings: 1.35
- Offset: Auto
- LLC level 6
- Extreme Tweaker Internal CPU Power Management
- IA AC Load Line [0.01] • IA DC Load Line [0.01]
- Advanced CPU Configuration – CPU – Power Management Control
- Intel® SpeedStep™ [Auto]
- Turbo Mode [Enabled]
- CPU C-states [Enabled]
- Enhanced C-states [Enabled]
- CPU C3 Report [Enabled]
- CPU C6 Report [Enabled]
- CPU C7 Report [CPU C7s]
- CPU C8 Report [Enabled]
- Package C State Limit [Cpu Default]
- CFG Lock [Disabled]
- Intel® Speed Shift Technology [Enabled]
Any of these could help, or is there something that seems risky?
Regarding the LLC setting: I’ve read warnings about it increasing VRMS temperature. Some sources suggest using it at lower levels (5-7), but others recommend caution. It might be worth testing at a lower setting first.
As for the voltage reading staying high even with default settings, your Vcore is around 1.280V and your stock VID is about 1.370V—this discrepancy could indicate a mismatch or calibration issue. It’s worth double-checking your BIOS values.
Lastly, the “SVID behavior” setting in BIOS says to use the best case scenario. Does this affect stability or performance?
Please let me know which point you’d like clarified.
Thanks!
I usually avoid adaptive voltage and keep the default C states active, while keeping Intel speed step turned on but Intel speed shift disabled. This approach seems inconsistent across different boards. Then I access the control panel power options and activate the performance profile. Within the advanced settings, locate the processor power state options and adjust the minimum to 8% and maximum to 100%. Save the changes and close the interface. With Speedstep on and the profile set this way, it will consume less voltage during idle and lower the CPU multiplier when full frequency isn't required. Since CPU response times are generally measured in thousandths of a second...
I generally avoid adaptive voltage settings and keep the default C states active. I also leave Intel speed step ON while disabling Intel speed shift, as this tends not to function properly across different boards.
In the control panel, I enable the performance profile and adjust the processor power state settings in the advanced options. Within these, set the minimum and maximum power states to 8% and 100%, respectively. Save your changes and close the interface.
When Speedstep is enabled and the profile is configured this way, it will consume less voltage during idle and lower the CPU multiplier when full speed isn't required. Given that CPU response times are usually in milliseconds, maintaining a frequency between 800-1000mhz at idle won't cause noticeable delays when a core needs to ramp up.
I believe your core voltage is insufficient for this overclocking attempt, and the LLC might be too high depending on the vdroop you encounter after increasing it. I’d start with around 1.3v and an LLC of 4 or 5, then adjust from there. I’m unsure what tools you use to check thermal compliance or stability, but this is the approach I’ve refined over many years, based on insights from experienced overclockers.
A brief summary of the overclocking validation steps:
- Set CPU multiplier and voltage in BIOS manually, avoiding presets.
- Configure most core settings yourself, leaving auto settings for later tweaks.
- Save your BIOS changes and exit.
- Boot into Windows and install Prime95 version 26.6.
- Install HWinfo or CoreTemp to monitor temperatures.
- Run Prime95 with the "Small FFT test option" for 15 minutes while checking core/package temps.
- Ensure CPU stays below 80°C (Intel) or 10°C below TJmax (AMD), adjusting settings as needed.
This process should help ensure stability before moving to advanced tuning.