CPU hangs on initial speed setting.
CPU hangs on initial speed setting.
Hey there! It's been a while since I shared here, but the work on those Lenovo laptops in the APAC area still gives me headaches. Lots of users are reporting slow performance and sluggish behavior, which turned out to be an intermittent CPU issue—especially when the laptop is docked and powered on. I only noticed it myself with my Thinkpad T470s, which got the same fix. The manufacturer patched it, but it still needs the latest 1903 major W10 update. All BIOS settings match what was installed originally, though we had a custom setup. The only solution seems to be restarting the laptop several times until it stabilizes. For me, it's manageable at 2.9Ghz, but X1 Yoga models are stuck at 2.1Ghz even with boost enabled (they’re actually running at 4.2Ghz). Any suggestions? Just wanted to share a screenshot from testing to see if boosting helps. Cheers, UKAussi
I am an IT professional with over 20 years of experience and have personally assembled my own home PC for about 15 years (refer to the profile image). I always keep it updated with the latest patches. Now that I've installed XTU, the data it shows seems inconsistent with the actual clock speed in Task Manager. I’m sure it’s stuck this way, even after a few restarts.
In my studies I also remember something about P state but haven't explored it much yet because work is overwhelming.
I’ve noticed the task manager often misrepresents clock speeds, particularly on CPUs with many cores. Switching to the high performance power plan seems to help a bit. Under Cinebench, I’d appreciate seeing some screenshots showing the difference. Please let me know if you want me to tag @Lemtea for a quick reply.
The Core i7-7600U features Intel’s low-power U series design. It combines three distinct processors into a single unit. The power consumption rating can be adjusted dynamically through software. By default, it runs at 2.80 GHz with a TDP of 15 Watts. Under heavy load, it will automatically reduce performance to stay within the 15 Watt limit. It can also switch to a TDP-down setting, capping power usage at 7.5 Watts. Some models automatically enter this mode when battery power is used. This results in reduced heat output and lower peak usage. In TDP-up mode, power limits rise to 25 Watts and the clock speed increases slightly to 2.90 GHz. You might notice a familiar threshold—your CPU is likely entering TDP-up mode because turbo boost is being turned off. This causes the 2.90 GHz to become your maximum speed. My Lenovo Y510P experiences a similar limitation, often disabling turbo boost for stability. When the Nvidia graphics card is active, its own turbo settings are similarly restricted. Over time, manufacturers have implemented various throttling techniques, though the performance impact remains consistent. If you encounter persistent issues with Intel XTU, consider using ThrottleStop from TechPowerUp. It’s tailored to address common throttling challenges. My wife used a ThinkPad T470; with ThrottleStop, it performed exceptionally well, handling full workloads smoothly. In a professional setting, this tool may face resistance, but it’s worth exploring if you’re determined to resolve the problem.
After reviewing it today and looking for clues, it looks like a glitch in the Task Manager. When watching the XTU it would show the frequency jumping to a full 3.9Ghz boost. It also fixed itself after a fourth reboot, and I checked it myself—performance stayed the same as before. Probably just a visual issue from MS Windows 10, which is great compared to the previous version. But this is definitely a weird thing, especially for someone in IT like me who’s troubleshooting problems on sales team laptops where half the users complain about tiny issues. ... once it’s resolved, I think it’s fixed.
hello! I am.having the same problem...I am managing a lot of lenovo laptops for my company too and discovered the exact same symptom. I've installed the Intel power gadget and tried to monitor the CPU speed. At first I observed similar which the cpu speed seems to be showing normal(goes up and down, up to 3.x ghz) but when I do more test and found there are real cases which cpu locks well below base speed(task manager shows locked at.base speed) and there are also cases which cpu speed goes up and down but can't go.above the base speed(while task manager still shows locked at.base speed) so there seems to be really an issue here....do you have any new observation from.your last POST?
Windows and Intel offer excellent products, but real-time monitoring tools are missing. I highly suggest using alternative software like "HWMonitor" and "CPUz." If you rely on Task Manager, switch the graph view to logical processors so you can track each core.