08-12-2017, 08:52 PM
Hi,
recently I bought Samsung C27F591 which is supposed to run easily with 72hz refresh rate. The only problem I have is that I don't know what settings are most safe.
I can create custom resolution in intel control panel but I have to pick from a few standards, here they are: GTF, CVT, CVT-RB, CEA 861. Monitor seems to work with first three ones, I didn't test the last one. What bothers me though is that I have literally no idea what these settings actually are and which one is the best for my monitor. None of them produces any glitches, however I still feel concerned about longevity of my monitor. Even worse it does seem that neither of this option uses the same sync polarity as my monitor natively uses. When I go to monitor menu and check information tab, it says something like "80.4khz, 72hz, NP" with one standard and PN with other. Does this refer to sync polarity? If I set monitor to native full hd 60hz it says "PP" which corelates to +/+ which is native polarity for that resolution and refresh rate. Is this a problem? On the one hand I heard sync polarity should be the same as monitor native, but on the other hand this very monitor uses different sync polarities depending on resolution:
http://downloadcenter.samsung.com/conten...8A-Eng.pdf (page 36)
This very sheet also says max pixel clock for my monitor is 148mhz, this is another (after sync polarity) thing that I don't understand. From what I get this has somethig to do with the amount of pixels that run through my monitor. Does running my monitor at higher pixel clocks damage it over time? What about these other settigns i can change in CRU? If, for example I set, let's say, blanking too high or too low, can it damage my monitor? The same question applies to other parameters. What if for example i set the refresh rate to 240hz, will it burn my monitor immediately? Alaso I noticed that when I use a non standard refresh rate, I can;t change hdmi black level option in monitor menu. It keeps the last setting. Is it normal? Also, If my monitor can run at these 72 hz, does it mean it can also run any refresh rate lower than that assuming all other settings stay the same?
These above are questions that I ask out of curiosity, the only one that is really improtant to me is what are the best 72 hz settings for my monitor, should the sync polarity remain +/+ (it's the same polarity as for native resolution and refresh rate), or it doesn;t matter? If my monitor can run these 72hz at "LCD native" preset, should I keep it, or change to "LCD reduced" in order to lower pixel clock speed (178mhz vs 160mhz) or maybe I should switch to LCD standard and then manually set polarity to +/+ (it's +/- by default)?
I add a few screens that show how these settings look like for me: http://imgur.com/a/ZMexh
The monitor is connected via HDMI cable.
Any information would be really helpful.
recently I bought Samsung C27F591 which is supposed to run easily with 72hz refresh rate. The only problem I have is that I don't know what settings are most safe.
I can create custom resolution in intel control panel but I have to pick from a few standards, here they are: GTF, CVT, CVT-RB, CEA 861. Monitor seems to work with first three ones, I didn't test the last one. What bothers me though is that I have literally no idea what these settings actually are and which one is the best for my monitor. None of them produces any glitches, however I still feel concerned about longevity of my monitor. Even worse it does seem that neither of this option uses the same sync polarity as my monitor natively uses. When I go to monitor menu and check information tab, it says something like "80.4khz, 72hz, NP" with one standard and PN with other. Does this refer to sync polarity? If I set monitor to native full hd 60hz it says "PP" which corelates to +/+ which is native polarity for that resolution and refresh rate. Is this a problem? On the one hand I heard sync polarity should be the same as monitor native, but on the other hand this very monitor uses different sync polarities depending on resolution:
http://downloadcenter.samsung.com/conten...8A-Eng.pdf (page 36)
This very sheet also says max pixel clock for my monitor is 148mhz, this is another (after sync polarity) thing that I don't understand. From what I get this has somethig to do with the amount of pixels that run through my monitor. Does running my monitor at higher pixel clocks damage it over time? What about these other settigns i can change in CRU? If, for example I set, let's say, blanking too high or too low, can it damage my monitor? The same question applies to other parameters. What if for example i set the refresh rate to 240hz, will it burn my monitor immediately? Alaso I noticed that when I use a non standard refresh rate, I can;t change hdmi black level option in monitor menu. It keeps the last setting. Is it normal? Also, If my monitor can run at these 72 hz, does it mean it can also run any refresh rate lower than that assuming all other settings stay the same?
These above are questions that I ask out of curiosity, the only one that is really improtant to me is what are the best 72 hz settings for my monitor, should the sync polarity remain +/+ (it's the same polarity as for native resolution and refresh rate), or it doesn;t matter? If my monitor can run these 72hz at "LCD native" preset, should I keep it, or change to "LCD reduced" in order to lower pixel clock speed (178mhz vs 160mhz) or maybe I should switch to LCD standard and then manually set polarity to +/+ (it's +/- by default)?
I add a few screens that show how these settings look like for me: http://imgur.com/a/ZMexh
The monitor is connected via HDMI cable.
Any information would be really helpful.