Samsung SyncMaster 740b overclocking issues

[Acorn Eyes]

Whenever I set my refresh rate at 80 or 85hz, the monitor works fine, but then about a minute later it blacks out. 

 

It says it's not at the optimum resolution when I change it to 80/85hz but the screen still works, but then again it blacks out a minute later.

[Droidbot]

5 minutes ago, Acorn Eyes said:

Whenever I set my refresh rate at 80 or 85hz, the monitor works fine, but then about a minute later it blacks out. 

 

It says it's not at the optimum resolution when I change it to 80/85hz but the screen still works, but then again it blacks out a minute later.

2243BwX does the same thing, try DVI

[Acorn Eyes]

2 minutes ago, Droidbot said:

2243BwX does the same thing, try DVI

It's currently on DVI.

 

My other monitor is also on DVI and I have no problems running it at 1680 x 1050 @ 76hz (max optimal is 60hz).

 

And my main one struggles to get anything above 60hz, getting a mere 66hz @ 1920 x 1080. Before updating the drivers I pushed it to 76hz just fine (but I couldn't save the resolutions). That one is on HDMI.

[Droidbot]

3 minutes ago, Acorn Eyes said:

It's currently on DVI.

 

My other monitor is also on DVI and I have no problems running it at 1680 x 1050 @ 76hz (max optimal is 60hz).

 

And my main one struggles to get anything above 60hz, getting a mere 66hz @ 1920 x 1080. Before updating the drivers I pushed it to 76hz just fine (but I couldn't save the resolutions). That one is on HDMI.

Strange. I can pump my 2243BWX to 85Hz on DVI, not VGA. And on 1024x768 it only works, any higher it just shuts down every couple mins.

[Acorn Eyes]

2 minutes ago, Droidbot said:

Strange. I can pump my 2243BWX to 85Hz on DVI, not VGA. And on 1024x768 it only works, any higher it just shuts down every couple mins.

Yeah I tried lowering the resolution to 800 x 600 to see if it fixed the problem and it didn't.

 

I only have displayport/HDMI/2x DVI and no VGA ports so there shouldn't be a bottleneck from the cable.