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BenQ UNIVERSAL 144Hz->220Hz OVERCLOCK for 1080p 144 Hz

Talk about overclocking displays at a higher refresh rate. This includes homebrew, 165Hz, QNIX, Catleap, Overlord Tempest, SEIKI displays, certain HDTVs, and other overclockable displays.

Re: BenQ UNIVERSAL 144Hz->220Hz OVERCLOCK for 1080p 144 Hz

Postby .c0dy » 07 Sep 2019, 17:47

First of all, thanks to everyone involved that made this possible and more convenient! :)

I can also confirm that this works with my XL2411Z with V4 and DVI with up to 200Hz.

I've noticed two possible "issues" though.

1) After installing a new/different driver it'll stay out of range, even with OORBuster running. Maybe the same will happen if the driver is lost due to OC in some applications/games? Maybe OORB could monitor ETW events (in case device loss is logged with these).

2) 200Hz worked for a retrospect on Netflix but after that, if a Netflix window (chrome with the player or Win10 App) was opened, it resulted in the whole screen being unusable. It's almost like one of those gray-screens on an old TV back in the day, as you can see here: https://i.imgur.com/HfrDLTE.jpg

As soon as the app or browser-window is closed, it works fine again.

I haven't rebooted yet, but I assume it would fix it (at least temporarily), since it worked once before. It also might be related to the Nvidia driver. I haven't tested a different one yet. I'm on 436.15 currently.

The Netflix issue does not exist with Hz <= 144Hz though. Can anybody confirm/verify this?
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Re: BenQ UNIVERSAL 144Hz->220Hz OVERCLOCK for 1080p 144 Hz

Postby hleV » 08 Sep 2019, 03:37

  1. Yes, OOR Buster isn't perfect and doesn't account for all scenarios such as driver installation or occasionally deep system sleep, where it would not apply the fix after system wakes up. There are probably other scenarios too. If you have OORB on autostart, restarting should fix it.
  2. Probably the OC is unstable. I have the same monitor as you (same FW, etc.) and it's only truly stable at 180Hz, as going higher will eventually result in a white unusable screen (which OORB also fails to detect I believe, turning monitor off and on should in theory apply the fix but I don't think it does).
OOR Buster is due an update (gonna have more detection along with UI for settings/monitor presets), but I don't know when I'll have the time to finish it. It's open-source if anyone's eager to hotfix it.
BenQ XL2411Z / 180Hz OC / BR off
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Re: BenQ UNIVERSAL 144Hz->220Hz OVERCLOCK for 1080p 144 Hz

Postby .c0dy » 08 Sep 2019, 15:29

Hm, I guess I'll try an older driver next.

I've just tried 180Hz and I had the same issue. Also happened with Firefox instead of Chrome.

However, even if the netflix-window is on the second display, the primary one still becomes that gray static mess.
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Re: BenQ UNIVERSAL 144Hz->220Hz OVERCLOCK for 1080p 144 Hz

Postby Chief Blur Buster » 09 Sep 2019, 15:16

This is an HDCP issue. (High Definition Copy Protection)

Netflix use HDCP to protect their content from being recorded by a screen recorder or re-streaming from your system (e.g. NVIDIA ShadowPlay), etc.

It is possible that HDCP fails during an overclock, or maybe that HDCP is incompatible with 6bpc.
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Re: BenQ UNIVERSAL 144Hz->220Hz OVERCLOCK for 1080p 144 Hz

Postby Tyllo » 10 Sep 2019, 02:16

Thanks for this! Was able to get my dated XL2430T up to 180Hz with hleV's tool. 190Hz also tests fine, but 200Hz won't pass. Looking at softMCCS it seems to do a full rescan whenever I set it to 200Hz and by the time its done the test run is already reverted. I have no idea where I've placed my S-Switch unfortunately as I haven't used it at all. Might try activating blur reduction and see where that gets me.

Do I need to pay any special attention to the Total pixels-values? It defaults to 2056/1098.
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Re: BenQ UNIVERSAL 144Hz->220Hz OVERCLOCK for 1080p 144 Hz

Postby Chief Blur Buster » 10 Sep 2019, 10:42

Tyllo wrote:Thanks for this! Was able to get my dated XL2430T up to 180Hz with hleV's tool. 190Hz also tests fine, but 200Hz won't pass. Looking at softMCCS it seems to do a full rescan whenever I set it to 200Hz and by the time its done the test run is already reverted. I have no idea where I've placed my S-Switch unfortunately as I haven't used it at all. Might try activating blur reduction and see where that gets me.

Do I need to pay any special attention to the Total pixels-values? It defaults to 2056/1098.

The smaller totals, the higher you can overclock.

The larger the totals, the better the blur reduction is.

Motion blur reduction will typically look best at lower Hz. Using 100Hz+large VT or 120Hz+large VT will look superior.

Alternatively, you could also potentially attempt overclocked vertical totals at a lower refresh rate (e.g. 220Hz dotclock in a 120Hz or 144Hz large VT, combined with the overclocking FAQ), but I don't think anyone here has tried overclocked vertical totals yet to see if strobe crosstalk can reduce even further than possible. 200Hz+ would actually make large vertical totals possible with 144Hz via overclocking, which would allow much better 144Hz motion blur reduction.
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Re: BenQ UNIVERSAL 144Hz->220Hz OVERCLOCK for 1080p 144 Hz

Postby Tyllo » 10 Sep 2019, 16:54

Chief Blur Buster wrote:
Tyllo wrote:Thanks for this! Was able to get my dated XL2430T up to 180Hz with hleV's tool. 190Hz also tests fine, but 200Hz won't pass. Looking at softMCCS it seems to do a full rescan whenever I set it to 200Hz and by the time its done the test run is already reverted. I have no idea where I've placed my S-Switch unfortunately as I haven't used it at all. Might try activating blur reduction and see where that gets me.

Do I need to pay any special attention to the Total pixels-values? It defaults to 2056/1098.

The smaller totals, the higher you can overclock.

The larger the totals, the better the blur reduction is.

Motion blur reduction will typically look best at lower Hz. Using 100Hz+large VT or 120Hz+large VT will look superior.

Alternatively, you could also potentially attempt overclocked vertical totals at a lower refresh rate (e.g. 220Hz dotclock in a 120Hz or 144Hz large VT, combined with the overclocking FAQ), but I don't think anyone here has tried overclocked vertical totals yet to see if strobe crosstalk can reduce even further than possible. 200Hz+ would actually make large vertical totals possible with 144Hz via overclocking, which would allow much better 144Hz motion blur reduction.


I see, thanks! I was able to get 220Hz running but with a lot of artifacting (scan lines and some displacement), to much for actual use. 200Hz seems stable and fine now though (couldn't get 215 running).

I had a go at tweaking VT but couldn't get anything above 1500 running at 100/120Hz, and 144Hz is more or less stuck at default values. Someone more knowledgeable might have more success than me.
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