I used the card - MSI R9 280X GAMING 3G.
And may somebody has already known.
Some of 280Xs have glitch so they will flicker when the voltage change with memory clock.
I use this video below from one guy who have same issue with me as a example.
Just like flickering on 00:01 in this video.
And some 280X users have already found a solution for this issue.
Just like what they doing and the comment below said:
We have to do it by modifying the profiles.xml file in C:\Users\USERNAME\AppData\Local\ATI\ACE.
And base on my own experience, if you change the minimum "MemoryClockTarget" to 1500MHz then apply the Overdrive, the 280X won't flicker ANYMORE!
Now it's my question, I have updated my driver from the catalyst to the new Crimson version,
and it seems like the "profiles.xml" way doesn't work anymore.
So my 280X start to flicker again. = =
How can I customize the minimum of "MemoryClockTarget" in Crimson driver? or I have to change back to catalyst?