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by fencepost 2204 days ago
I have a couple of old ThinkPads that work but seem to throttle heavily, I've attributed it to need for better burst draw handling.

Also one of their older W models that will only run on battery if a standard 90W power supply is connected and will only charge the battery if the device is off. Running on external power is only supported with the 135W or (stock) 170W PSU.