Yes, more power can be made available but be careful of overheating issues.
The z8300 & it’s onboard GPU unit run pretty close to the limits of passive thermal dissipation possible in the Hi10’s design.
There were reports that the first batch of Hi10’s were returned to factory to have thermal settings tweaked since they were running too hot and entering forced shutdown too easily (there are more possible power states and parameters availble for OEMs to adjust in Atom Z series than older Atoms and Core i-series CPUs)