Turkish please : Is dolmabahce palace worth visiting than Hagia sophia?

Actually you should go both. Distance is just 5 km and i guess you wont spend much time inside Hagia Sophia... Probably 1 hour in Hagia Sophia. On the other hand Dolmabahce Palace is always nice to visit. But first visit Dolmabahce Palace then move to Hagia Sophia. Coz you might able to see a few more places around Hagia Sophia like The Basilica Cistern or Blue Mosque they are just near to each other. I guess you can finish the tour in 4 or 5 hours and see all of 'em.