If a tesla k80 gets insufficient power for both GPU’s will it power just one?
The Tesla K80 is a dual-GPU card, meaning it contains two GPUs on a single physical card. Each GPU on the Tesla K80 requires a dedicated power supply to function properly. If the card receives insufficient power to run both GPUs, it is likely that only one GPU will be powered on while the other remains inactive.

It’s important to note that running a dual-GPU card with inadequate power can lead to performance issues or system instability. It’s generally recommended to provide the appropriate power supply to ensure the smooth operation of both GPUs on the Tesla K80.
I have two power supply units connect to a y connector.
If you have two power supply units connected to a Y connector, you can distribute the power from both supplies to the Tesla K80. However, it’s important to ensure that the combined power output from both power supply units is sufficient to meet the requirements of the Tesla K80.

The Tesla K80 typically requires a maximum power draw of around 300 watts per GPU, so for both GPUs, it would require a total power output of around 600 watts. Make sure that the combined power output of your two power supply units exceeds this requirement to provide enough power to both GPUs.

Additionally, ensure that the Y connector and the power supply units are compatible and properly connected to avoid any electrical issues or instability. It’s recommended to refer to the documentation and guidelines provided by the manufacturer of the Tesla K80 and the power supply units for specific instructions on power connections and requirements.