In Cardiff, an early phase of 83 premises, which were previously limited to below-30Mbps services, are now connected with gigabit capable internet speeds.
Yng Nghaerdydd, mae’r cam cyntaf sy'n cynnwys 83 adeilad, a oedd gynt wedi'u cyfyngu i wasanaethau is na 30Mbps, bellach yn gysylltiedig â chyflymder rhyngrwyd gigabit.