Can a laptop cool Core Ultra 5 134U, and will it throttle under sustained load?

  Whether it holds depends on sustained package power, the thermal module, and the performance mode. Balanced mode for office; for sustained all-core or video processing, choose two fans, adequate heat pipes, and a plugged-in performance mode that doesn't quickly cut power. With a dGPU, check the shared budget too. Promising temperature or "no throttling" from the model name isn't credible — the full-load review of the actual laptop is the real answer.