![]() ![]() If maximum frequency operation is preferred in such situations, a 90W AC adapter should be used.Īdditionally, operating with battery in circuit offers additional protection of data in the loss of AC input power. The following ThinkPad systems may be affected by this symptom: ![]() To prevent the potential for sudden system shut down if the power demand exceeds what the adapter can supply, the maximum clock speed may be limited when the system is operated on the 65W AC adapter and no battery is installed. If you want to verify, you can run any CPU stress test tool to. Newer ThinkPads make use of high performance CPUs that may require more power than what the 65W adapter can provide while also supporting USB, Optical and other attached devices, especially in docked configurations. However, if the CPU is not running at full speed in Windows 11/10 even on a heavy workload, then the situation needs some attention.
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