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Samsung odyssey G7 CRU Hz issue
08-27-2020, 06:04 AM
Post: #1
Samsung odyssey G7 CRU Hz issue
I am new to using cru and am having some issues. I currently have the Samsung odyssey g7 32 which runs up to 240hz at 1440. I have gone through windows and changed the settings to 240...however cru is showing that I'm running 1440 at 59hz. The monitor is also set to 240hz. Now when I change the settings on the monitor to any other hz - 60/120/144 it changes in cru accordingly. But as soon as I change the monitor to 240, cru drops back to 59hz. When I try to change it, cru only lets me change to 144hz max...and will not allow me to enter 240. What can I do about this? Why won't it let me change my Hz to 240? Thanks in advance
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08-27-2020, 02:15 PM
Post: #2
RE: Samsung odyssey G7 CRU Hz issue
CRU doesn't show the current resolution. It shows what's in the EDID. It's not possible to define 2560x1440 @ 240 Hz with an EDID detailed resolution because the pixel clock is limited to 655.35 MHz. 240 Hz is probably in the second extension block, which should be a DisplayID extension block. DisplayID detailed resolutions have higher limits. If you have an NVIDIA card, CRU can't read the second extension block because the driver won't provide it for some reason. AMD cards should be fine. If you want to make any changes with NVIDIA, you'll have to delete any default extension blocks and add a DisplayID extension block manually. Then you can add 2560x1440 @ 240 Hz in there.
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08-27-2020, 04:32 PM
Post: #3
RE: Samsung odyssey G7 CRU Hz issue
(08-27-2020 02:15 PM)ToastyX Wrote:  CRU doesn't show the current resolution. It shows what's in the EDID. It's not possible to define 2560x1440 @ 240 Hz with an EDID detailed resolution because the pixel clock is limited to 655.35 MHz. 240 Hz is probably in the second extension block, which should be a DisplayID extension block. DisplayID detailed resolutions have higher limits. If you have an NVIDIA card, CRU can't read the second extension block because the driver won't provide it for some reason. AMD cards should be fine. If you want to make any changes with NVIDIA, you'll have to delete any default extension blocks and add a DisplayID extension block manually. Then you can add 2560x1440 @ 240 Hz in there.

Awesome thank you! So even though it shows 144hz is should actually be running at 240?
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08-27-2020, 08:30 PM
Post: #4
RE: Samsung odyssey G7 CRU Hz issue
(08-27-2020 04:32 PM)Styles 2420 Wrote:  Awesome thank you! So even though it shows 144hz is should actually be running at 240?
It should be running at whatever you have set in the Windows display settings. Try this: https://www.displayhz.com/
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08-28-2020, 05:55 AM
Post: #5
RE: Samsung odyssey G7 CRU Hz issue
(08-27-2020 08:30 PM)ToastyX Wrote:  
(08-27-2020 04:32 PM)Styles 2420 Wrote:  Awesome thank you! So even though it shows 144hz is should actually be running at 240?
It should be running at whatever you have set in the Windows display settings. Try this: https://www.displayhz.com/

Awesome! Thanks for the info
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