Gigabyte Z270 overclocking assistance guide
Gigabyte Z270 overclocking assistance guide
Be cautious with "optimized defaults"; they might be too aggressive. It's simpler to just boost the multiplier on all cores and keep voltage at auto. You'll achieve a decent oci. Then look for adaptive voltage or whatever gigabyte calls it. Would I need to worry about LLC or offset values if I do this this way?
Reindheart :
Geofelt suggests being cautious with "optimized defaults" as they might be too aggressive. It's simpler to just raise the multiplier across all cores while keeping voltage on auto. This should give you a decent result. Later, you can adjust adaptive voltage or similar settings for better performance. However, for a modest overclock, you likely won't need to worry about LLC or offset values. More detailed OC parameters would require more expertise than I possess. The main point is to keep vcore stable and avoid exceeding 1.4v under load.
Everything seems to be managed through one main menu for CPU voltage adjustments. LLC is found under Advanced Power options, and Advanced Frequency settings are accessible there. XMP should suffice. Adjusting the voltage while keeping the C states active will allow the clock to reduce. The system must run in normal mode, not maximum performance, or it will remain stuck at the boost frequency.
As before, the manual doesn't really capture the live BIOS well. It provides vague descriptions with few images. (I think these boards were rushed, then pushed for X299 and Z370, so updates are unlikely)
This is why I prefer Tweaktown's guide. It displays each setting in multiple BIOS versions. It was very useful for me since my previous board was an ASUS.
Eximo:
Everything seems to be managed through one menu for CPU voltage adjustments. The LLC is under Advanced Power options, and the Advanced Frequency controls are there too. XMP should suffice. Keeping the C states on while adjusting the voltage should allow the system to lower its clock speed. Windows must operate in normal mode, not maximum performance, or it will remain stuck at the boost frequency.
As before, the manual doesn't really capture the live BIOS well. It gives vague descriptions with few pictures. I think these boards were rushed, so updates might be limited.
That's why I prefer Tweaktown's guide. It displays each setting in multiple BIOS versions, which was very useful for my previous ASUS board.
I loaded the BIOS settings to their defaults, changed only the CPU ratio (47 - 4.7ghz) and Core Voltage (1.26), but when running Prime95 my voltage is still below 1.26v, while at idle it's 1.248v. Is this acceptable? If not, which adjustments should I make to fix it?
Check the cpu-Z at idle. If you've set adaptive voltage and speedstep, your multiplier should be under 47 and the voltage should also be lower. Running prime95 at 47 with a vcore of 1.26 shows a very good chip; you can improve further if desired. I enabled LLC in my BIOS to Turbo mode and adjusted the voltage to 1.24. At idle it's around 1.248 volts and below 4700 MHz, but under stress it fluctuates between 1.248 and 1.284, often staying near 1.248 to 1.260. How should I adjust further to prevent it from reaching 1.28?
7700K performs well up to 1.4v after stress testing. You can achieve better than 4.7, but if that level feels comfortable for you, you should stop now. If you notice vcore remaining above 1.0 during idle, it means the voltage isn’t dropping when there’s little activity—this 1.2xx range is perfectly fine. The main goal is to locate the adaptive voltage/speedstep knob in the BIOS.
Geofelt suggests the current setting of 7700K is acceptable up to 1.4v after stress testing. Exceeding 4.7 is possible, but if it feels comfortable, you're fine and no further adjustments are needed. If the vcore remains above 1.0 during idle, it indicates the system isn't reducing voltage unnecessarily. The main adjustment comes from the adaptive voltage/speedstep control in the BIOS. I’m okay with keeping it at 4.7 since I’m mainly gaming and not using it for work. I’m struggling to set it to adaptive mode because my vcore never drops below 1.0 at idle. My C-States are active, speed shift is on, and Voltage Optimization is enabled. In the CPU voltage section of the BIOS, I can choose auto, manual settings (currently 1.260V), or normal. Setting it to normal unlocks Dynamic VCore (DVID), but I’m unsure how to use that feature properly. My LLC is also in turbo mode.
When you assign a value to a particular number, that's what you'll receive.
It seems you're aiming to configure your voltage to auto, which is generally a secure choice.
Based on your description, I would suggest setting the voltage to normal and using the DVID option for auto.
This might refer to adaptive vcore.
geofelt :
When you assign a value to a particular setting, that's what you'll receive.
I believe you're aiming to enable auto-voltage, which is generally a secure choice.
Based on your description, I'd suggest configuring voltage to normal and using the DVID option for auto.
This seems like another term for adaptive vcore.
I've tested it already; at idle core voltage remains around 1.26, occasionally rising to 1.27. It's becoming quite annoying, so I might just keep it at 1.26 manually given all my previous attempts.