https://www.hyundai-rotem.co.kr/Eng/...ail1_pop13.asp
Direct from Rotem - max speed 161kph or 100mph.
Agreed timetables could be tighter and there is too much sitting at stations waiting for the clock. IE are not alone doing this as other railways also leave extra time at stops.
The 11 mins Newbridge-Kildare is excessive; 8 mins should be sufficient for a terminating train and 6 otherwise.