Why my GPU won't go higher than 1000Mhz even tho clock is at 1120.

Mr_17_

Commendable
Nov 4, 2016
2
0
1,510
Guys, at first sorry for my English.

I have a question. Lately my GPU ASUS R9 270X was in service and they fix it but after some tests I find out that GPU core won't go higher than 1000Mhz. But my default clock is 1120. I have tested with several programs and games and nothing change. And my question is, do they lock GPU clock? And should I go to the shop and complain about it or this behaviour is completly fine?

Here I took screenshots.

http://imgur.com/a/XSs0j
http://imgur.com/a/tt6JI
http://imgur.com/a/tt6JI