Can't boost i7-7820HK to 2.9Ghz - Alienware 15R3
Can't boost i7-7820HK to 2.9Ghz - Alienware 15R3
The FIVR voltages are now displayed properly in the monitoring table, which means core isolation should be turned off. Occasionally, some Windows Updates may activate core isolation by chance; therefore, periodically check the monitoring table to confirm everything is functioning correctly.
Determine your desired CPU speed. If you encounter overclocking difficulties, verify the MMIO Lock setting in the top-right corner of the TPL window. This option is required to unlock the full multiplier capacity. After enabling it, consider adjusting the Turbo Ratio Limits. Lower or set your undervolt to prevent insufficient voltage from hindering your overclocking efforts.
I followed your instructions but the turbo rate limits stay fixed. I didn't aim for a specific speed when setting up the laptop; it started at 2.89GHz, but the turbo was supposed to reach 3.9GHz, yet it never adjusted. Now it seems to work smoothly between 2.9 and 3.9GHz, reaching about 3.89GHz! When I used TS without any adjustments and turned off turbo, the CPU increased to around 4.2GHz according to Task Manager, and it operated normally. Is that correct or could it exceed the stated 3.9GHz?
The Task Manager is not a 100% accurate source of MHz information, especially on some unlocked K series CPUs.
In the TPL window make sure Speed Shift is checked. Speed Shift Max needs to be set appropriately. The Max value can limit the maximum CPU speed.
In theory it can. Post another round of screenshots so I can see your updated settings if you cannot access the 40 multiplier or higher. Set all of the turbo ratios to 40 and set Speed Shift Max to 40. Run something simple like a TS Bench 1 Thread test. Get a screenshot of the main ThrottleStop window while the CPU is loaded. There are multiple things that some manufacturers can set to prevent overclocking. Even if we cannot get overclocking to work, at least your CPU is running a lot faster than it was.
Consider verifying the Overclock setting within the FIVR window. Overclock generally requires attention when attempting to use multipliers above the standard defaults. The Speed Shift Max indicates a cap of 39, and it’s unclear if surpassing this is feasible. Evaluating Overclock could enable the use of a 40 multiplier, though higher requests are often dismissed if Overclock isn’t activated. Everything else appears normal. I tend to set IccMax for the core and cache to their maximum values of 255.75, which helps avoid EDP throttling. At least the 39 multiplier is functioning properly, offering a significant boost—around 35% faster than the original 2.9 GHz limit. Pressing these three keys together unlocks the Snipping Tool, simplifying the capture of clear screenshots without needing a mobile device.
Thank you for the update. The system is currently operating at 4.1GHz with the FIVR turbo ratio limits set to 42,41,41,41.
Recent screenshots show stable performance reaching up to 4.2GHz.
All configurations and toggles appear correctly set.
Are there any adjustments needed regarding voltage settings?