I have some ideas for extrem high Techs:
1.
Androids (not Cyborgs), fully self operating machines which are highly expensive, need a very high AI and are EXTREMLY dangerous if the ever go roughe
2.
Nanites in every possible shape and color
, like Nanite Armour (fully self repairing, but need much energy and resources), Nanite projectiles, Nanite rockets and other Nanite weapons (too much to list them all yet) and Nanite infusions for the Crew (against injuries, illnes or viruses)
3.
Space bending devices, like shields and weapons who litterally tear everything apart but cost ENOURMOUS amounts of energy (like a little sun
)
4.
Super reactors, these produce (in fact) so much energy like a sun but if they blow up... lets say then there is a solar system less in the galaxy
5.
Matter producer, they can produce everything but need too ENOURMOUS amounts of power
6.
Last but not least super AI cores, they are needed for all of the techs listedd above, they can control the whole ship without need of "organic" help, but if they go nuts... well HALL and SKYNET are like calculators who can only calculate + and - to them
And now we are comming to the costs of all these nice things:
A ship equiped with all these will take ... let's see... You would need resources worth Luna (our moon)
Well the most expensive parts are the super reactors and the matter producers
But these here should be EXTREME high techs so you shouldn't think they are easy to get