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Samsung monitor Overclocking

post #1 of 15
Thread Starter 
Hi I read about people overclocking Catleaps and other Korean monitors recently. It seemed to be fairly popular, and so I decided I might try it on my display. It isn't a Korean monitor it is a Samsung BX2231 but I figured why not at least try.

I was able to get upto 77hz with slightly lower timings, and 76hz with default timings. 78hz appears to work just fine but there is a big message on my screen telling me it isn't recommended to do so and I see no way to turn it off. Above that text starts to blur So I figure I will be just fine with 77 or 76. Now I had two questions.

One what would be the negative side affects if any of overclocking my monitor? Is there any reason I wouldn't want to do it?

and Two Which would be more advisable to run


Oh and one more question that is along similar lines. Since I could run higher timing at a 76hz would it be advisable to try and run an even lower refresh rate like 72hz and push the timings higher than what they were at default?
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post #2 of 15
I don't know anything about 'overclocking' monitors but a negative side to overclocking is an increased chance of failure and a reduced lifespan

Also, Samsung is Korean...
Edited by Crooksy - 1/10/13 at 1:59pm
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post #3 of 15
Is it actually displaying those extra frames?
post #4 of 15
How did you do this? I have one that could use a little lovin.
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post #5 of 15
Thread Starter 
I know Samsung is Korean, I was generalizing and referring to the large varienty of 2560x1440 monitors from Korean. I guess maybe I should be a bit more careful with my wording.

I did it by creating a custom resolution in Nvidia control panel at 77hz. This according powerstrip allowed me to refresh at 77hz. However it didn't work in any game I tested, just on the desktop. I then used the Custom Resolution Utility that allowed me to modify the EDID easily. I setup a new resolution for my monitor telling it that it could support 77hz with a custom resolution at 1920x1080 telling it to guess for the timings and setting the hz to 77. After that I restarted my computer checked powerstrip to make sure it was at 77hz and loaded up TF2, then Saints Row the third, and then Tera and all ran at 77frames and there was no screen tearing, and vsync was turned on. Based on that I am pretty sure it is actually running at that refresh rate.
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post #6 of 15

I feel like a hipster cus of this thread.

post #7 of 15
Link to the program that you used for the EDID?

I would be happy with 75hz personally biggrin.gif.
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post #8 of 15
Thread Starter 
Below is a link to the program it is supposed to make editing the EDID as easy as possible.

http://www.monitortests.com/cru-p4.zip

I will explain the steps I used, if there is anything I didn't explain well enough say so and I can add screenshots for that particular part.

Now you want to create a detailed resolution with 75hz (that's a good place to start) and then enter your resolution then hit auto best for LCD and save. For games to recognize it make sure it is at the top of the detailed resolutions. Then you want to restart. After that setup a custom resolution with the same timings in Nvidia control panel you go to change resolution and customize. Then create custom resolution. Set the timings to manual and change them to the same timings custom resolution utility setup, and then of course change the refresh rate to 75hz, and the resolution to 1920x1080. Then hit test at the bottom if it works just fine save it, if not you can try to lower the timings or refresh rate to find the max refresh rate your monitor can do. Once it is saved you are going to have to select the custom resolution you just made, and set it to 75hz.

With AMD I don't know how to set a custom resolution if you don't either I can try and find out how for you but I can't guarantee anything.

After that download powerstrip (http://entechtaiwan.com/util/ps.shtm), and install it. It says it needs to restart your computer I didn't restart and it worked fine for me. Once you launch it it should show up in your system tray on your taskbar. Click it while it is in the tray and a menu will popup. However over display profiles and a submenu will pop up go to configure. In the new window that it just popped up or should have There will be a section that says refresh rate with a camera. Double click the camera, it should have a small window next to the camera that says wait. Give it a moment and it will show your refresh rate which should be 75. If it is launch a game with vsync and see if runs at 75 frames (using fraps or another fps monitoring tool). Some games I found I either have to alt tab out and then back in, or set vsync to off and then back on for it to run at 75hz. Of course if it is running at 75 frames with vsync and no screen tearing it should mean you are getting that refresh rate.

Now that you did that, I am not exactly sure what timings do but I am pretty sure it affects response time. I know it is better to have them higher. So since you already know how to setup a custom resolution you can follow the steps again and use higher timings, or a higher refresh rate. In custom resolution utility, it will tell you how much bandwidth each custom resolution will use, my timings and resolution are taking up 188mb/s so single link dvi couldn't run it, just keep that in mind depending on what cable you are using.

I can't guarantee this step will work for you, but I found that without setting a custom resolution with the custom resolution utility that I was able to use higher refresh rates with using the Nvidia control panel alone. Games wouldn't recognize them until I modified the EDID but my monitor would run at those resolutions. So that is what I did to test timings and refresh rate, after I had 77hz running at the highest timings I could which took several tries and the control panel told me it wasn't stable several times. Then I added that refresh rate and timings to CRU.
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Ballz Killswitch
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post #9 of 15
I have been overclocking for years. I've had ZERO issues with any of my hardware for the last 25+ years.

1.) Move in small increments (5-10% at a time)
2.) ALWAYS use monitoring software to benchmark the success or failure of the overclocking
3.) Make sure nothing overheats
4.) Don't get greedy wink.gif

Just remember that when a manufacturer produces a product they underclock it to ensure the product will have a long life in your home. From the factory, they can automatically handle a bit of overclocking wink.gif It's like an engine. They are benchmarked at 10-20% higher HP and Lbs ft but are detuned afterwards so they last longer smile.gif Rest easy.

For monitor overclocking, use your video card manufacturer's driver control panel to make a custom resolution. Set it to automatically handle all the perimeters. All you need to do is ensure it is at the resolution you want: 1920 x 1080 etc. Then you select a refresh rate ie: 72 Hz, save and apply. I went from 60 Hz to 72 Hz in a few tests and everything is smooth and perfect smile.gif Why 72 Hz and not 75 Hz? The standard for frame sequences are 24 frames/screens per second.
Use this application to test for frame skipping, to ensure you have 100% success with your monitor's ability to handle the new refresh rate:

Test UFO: http://www.testufo.com/#test=frameskipping&horiz=25&vert=17

I too am running a Samsung monitor btw. Mine is a S27D390 27 inch. It was at 1920 x 1080 @ 60Hz max... Now it is at 1920 x 1080 @ 72 Hz
002.jpg 1211k .jpg file
003.jpg 918k .jpg file

Good Luck and don't be intimidated thumb.gif
post #10 of 15
I kinda just tried this. I have a Samsung S27C750P and it's stock at 60hz, and I'm trying to get it as high as I can as I play CS:GO competitively. I used EVGA's Precision X Pixel Clocking feature. I tried 80hz, but I got that same error message as you. I brought it down slowly until I stopped getting the error which was 75hz. Problem is, I no longer have my custom resolution in CS:GO... I know this is a longshot, but has anyone here run into an issue like this? To initially get the custom resolution in CS:GO, I had to go to nVidia control panel and create a "Custom Resolution" @ 1440x1080 4:3 which is what I want. So after overclocking the monitor, I went the nVidia control panel, deleted my custom 1440 resolution, and made a new 1440x1080 resolution at 75hz, but when I launched CS:GO the custom resolution was not available like it used to be. I tried everything; special launch options in steam, restarting pc, changing CS:GO config, messing with nVidia settings. Nothing has worked. Anyone know how to fix this? This is so frustrating!
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