That delta is compatible and in all honesty back in the day they were very good quality.
The age of it would concern me now to be honest more than anything else, meaning degradation from prolonged use and also the fact that's its an old group regulated design rather than the dc regulated units that are more practical with modern components. That psu model is from 2013 or thereabouts.
But yes, in essence it's compatible, just whether you trust it or not with brand new components.