Paddy Wallace scored Ulster's first try against the Blues
Ulster (13) 32
Tries: Wallace, N Best, Trimble 2, Cunningham.
Con: Humphreys 2
Blues (5) 12
Tries: Czekaj, Evans
Champions and league leaders Ulster romped to a bonus-point win over Cardiff Blues at Ravenhill on Saturday.
The Blues scored first as Chris Czekaj forced his way over for an early try.
But tries from centre Paddy Wallace and flanker Neil Best, plus a penalty from David Humphreys gave the province an interval advantage of 13-5.
Andrew Trimble burst through for two tries and full-back Bryn Cunningham got the other for Ulster with Wayne Evans going over for a Blues late on.
The Blues' lead came after seven minutes as Mark Lewis crashed through some non-existent Ulster tackling and wriggled for the line, Czekaj finishing off for the try.
Humphreys landed an immediate penalty from the restart for Ulster.
On 26 minutes Trimble's strong running saw him brush off substitute Tom Shanklin with ease to begin a sweeping move which ended with Wallace getting the try.
Humphreys ended up pole-axed in giving the scoring pass and Wallace then failed to add the points while Humphreys was eventually hauled to his feet.
Still, Ulster now led 8-5 and 32 minutes in, with Cardiff being increasingly penalised, Ulster's pack took charge at a lineout near the Blues' line to maul their way over.
Neil Best got the score in the mayhem which saw Matt McCullough forced to leave the field for attention to a head wound.
The second half was all about Ulster turning the screw.
They got their third try with Humphreys slipping the ball to Trimble who sped through for a fine score.
At 20-5 it looked game over and Ulster piled on the pain with a Maxwell 80-metre kick and chase ending up with Cunningham grabbing the bonus point try.
Ulster quickly scored again, this time Trimble gathering from another kick and chase.
Wayne Evans's injury time try was little consolation for the visitors.
Ulster: Cunningham, Maxwell, Maggs, Wallace, Trimble, Humphreys, Boss, J. Fitzpatrick, R. Best, B. Young, Harrison, McCullough, N. Best, Ferris, Wilson.
Replacements: Shields, D. Fitzpatrick, Barker, McMillan, Campbell, Larkin, S. Young.
Cardiff Blues: Macleod, Czekaj, J. Robinson, Stcherbina, R. Williams, N. Robinson, Fairhurst, Yapp, Goodfield, G. Powell, Jones, Goode, Morgan, White, Lewis.
Replacements: Jenkins, G. Williams, Davies, M. Williams, Evans, Shanklin, Flanagan.
Referee: Andy Ireland (SRU)