Max wattage from my lab power supply? (Patreon)

My cheap lab power supply is rated at max 300 watts (30V, 10A), so I was surprised to measure 32V from it. However, it was with no load on it. Maybe the voltage will drop once the power supply has to deliver current to a device.

In my upcoming video, I will attempt to test its max output. Can you guess how many (or few) watts it will deliver? Vote below.

Video links:
The power supply used with an electromagnet: https://youtu.be/adRJQGAFl8g
Measuring 32V from it (at the end of the video): https://youtu.be/ClDWSDUMmr4