Overclocking Benq XL2411 - 144 hz to 165/200 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.
Zeeom
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Overclocking Benq XL2411 - 144 hz to 165/200 hz

Post by Zeeom » 07 Aug 2019, 22:48

I get weird horizontal scanlines that appear to be going upwards on my monitor.
They are more visible on 200 hz compared to 165 hz.

Is it safe to keep it overclocked? What are the cons?

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hleV
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Re: Overclocking Benq XL2411 - 144 hz to 165/200 hz

Post by hleV » 08 Aug 2019, 02:32

Scanlines depend on refresh rate. Try adjusting your refresh rate until they're least noticeable. In my case 180Hz looks nice.
BenQ XL2411Z

Zeeom
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Re: Overclocking Benq XL2411 - 144 hz to 165/200 hz

Post by Zeeom » 08 Aug 2019, 11:00

hleV wrote:Scanlines depend on refresh rate. Try adjusting your refresh rate until they're least noticeable. In my case 180Hz looks nice.
I see. Will overclocking my XL2411 destroy the panel?

How long has yours survived the overclock?

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hleV
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Re: Overclocking Benq XL2411 - 144 hz to 165/200 hz

Post by hleV » 08 Aug 2019, 14:43

If we're to believe Chief (no reason not to), the risk is very low and the panel shouldn't be harmed unless you're tinkering with blur reduction in addition to overclocked refresh rate.
BenQ XL2411Z

Zeeom
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Re: Overclocking Benq XL2411 - 144 hz to 165/200 hz

Post by Zeeom » 08 Aug 2019, 19:07

Okay thank you for your input, I appreciate it!

One last question, I got to run 200 hz on fortnite on the first try but it doesn't work anymore, not on fullscreen at least (it runs on 200 hz on windowed fullscreen). It seems to be limited to 144 hz. What could be the reason behind this? Is there a fix?

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hleV
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Re: Overclocking Benq XL2411 - 144 hz to 165/200 hz

Post by hleV » 09 Aug 2019, 00:13

Do you get out of range-black screen when trying fullscreen? If so try OOR Buster.
BenQ XL2411Z

Kulagin
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Joined: 27 Feb 2016, 08:17

Re: Overclocking Benq XL2411 - 144 hz to 165/200 hz

Post by Kulagin » 24 Sep 2020, 08:02

hleV wrote:
08 Aug 2019, 02:32
Scanlines depend on refresh rate. Try adjusting your refresh rate until they're least noticeable. In my case 180Hz looks nice.
Zeeom wrote:
07 Aug 2019, 22:48
I get weird horizontal scanlines that appear to be going upwards on my monitor.
They are more visible on 200 hz compared to 165 hz.

Is it safe to keep it overclocked? What are the cons?
Quoting to ask. Have you overclocked your XL2411 on D-Sub, DVI or HDMI? I guess DVI?

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hleV
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Re: Overclocking Benq XL2411 - 144 hz to 165/200 hz

Post by hleV » 24 Sep 2020, 13:37

Kulagin wrote:
24 Sep 2020, 08:02
Quoting to ask. Have you overclocked your XL2411 on D-Sub, DVI or HDMI? I guess DVI?
DVI if you're asking me.
BenQ XL2411Z

Kulagin
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Joined: 27 Feb 2016, 08:17

Re: Overclocking Benq XL2411 - 144 hz to 165/200 hz

Post by Kulagin » 25 Sep 2020, 12:01

hleV wrote:
24 Sep 2020, 13:37
Kulagin wrote:
24 Sep 2020, 08:02
Quoting to ask. Have you overclocked your XL2411 on D-Sub, DVI or HDMI? I guess DVI?
DVI if you're asking me.
What was the maximum result that you reached? I mean, without frameskipping or other undesired effects like blur and other.

About to get this monitor and I see Zeom reported 200 Hz:
Zeeom wrote:
08 Aug 2019, 19:07
One last question, I got to run 200 hz on fortnite on the first try but it doesn't work anymore, not on fullscreen at least (it runs on 200 hz on windowed fullscreen). It seems to be limited to 144 hz. What could be the reason behind this? Is there a fix?
Which is alredy better than I originally thought it would be. Just wondering what other people reached. By applying Nvidia Clock Patcher and lowering Front porch, Sync width and total pixels I managed to lower pixel clock and reach 89 Hz on my 60 Hz monitor, like this:
Image

So I wonder what result I could get on Benq XL2411. What other techniques(other than pixel patcher and lowering front porch, sync width and total pixels) monitor overclockers use? I only find Nvidia/AMD control panel videos on youtube that just increase their vertical refresh rate until their monitor blacks out.
Are there maybe any hardware modifications I could do to push it further? I don't mind getting some chip or PCB off of aliexpress, burn it with some programmer or something and solder it onto the monitor's board if that could help to push the limits.
I should start here probably: viewtopic.php?t=5544

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hleV
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Re: Overclocking Benq XL2411 - 144 hz to 165/200 hz

Post by hleV » 25 Sep 2020, 16:06

Kulagin wrote:
25 Sep 2020, 12:01
What was the maximum result that you reached? I mean, without frameskipping or other undesired effects like blur and other.
Mine is an old XL2411Z with V4 firmware, and only really stable with no frameskipping and sudden whiteouts at no higher than 180Hz, using DVI. That's with settings from Chief's original post, at 1080p. I haven't played around with the settings to see if I can get it higher.
BenQ XL2411Z

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