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[Official] The Qnix/X-Star 1440p Monitor Club - Page 817

post #8161 of 25888
Quote:
Originally Posted by skilly View Post

Try changing the pixel clock to 459.86mhz.. Thats the lowest I know of that anyone has gotten to so far.

If I change the pixel clock manually it lowers it to whatever hz it feels like.

Like, I can't just lower the pixel clock without it changing the refresh rate?



that is the highest i've been able to go. I don't see any lines @ 117 hz but I feel like if I knew what I was doing to tweak it I could go to 120.
Edited by HardwareDecoder - 10/16/13 at 9:35am
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post #8162 of 25888
Quote:
Originally Posted by Duffsta82 View Post

Hey has anyone been able to fix yellow backlight bleed? Mines pretty bad between middle and right sides bottom if I press on it gets a bit better but kinda moves.. worth opening her up??

From what I've seen on my panel, yellow backlight bleed may be caused by the entire panel being bent, while white backlight bleed is from the metal surround/bracket pressing against the panel. Lay a ruler against your screen at different angles to see if it is flat across its entire length.

Here's what my backlight bleed looked like:


When I took the panel out of the casing I saw this:


I laid the panel down face-first and place weights on to hold it flat.


This did 95% of the job, and a bit of strategically placed cardboard to torque it completely straight did the rest. How it looks now:

Edited by TrptJim - 10/16/13 at 9:38am
post #8163 of 25888
Quote:
Originally Posted by HardwareDecoder View Post

If I change the pixel clock manually it lowers it to whatever hz it feels like.

Like, I can't just lower the pixel clock without it changing the refresh rate?


Unfortunately only works one way - set the timings and you get the calculated pixel clock.
post #8164 of 25888
Quote:
Originally Posted by jerrolds View Post

Unfortunately only works one way - set the timings and you get the calculated pixel clock.


hmmm So that likely means i'm stuck @ 117hz then? I'm just not sure what to change to go for 120hz.

I haven't even done the frame skipping test yet @ 120hz so i'll need to do that before I call it working anyway.

I will probably just use 96hz anyway as this looks pretty dark.
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CoolingCoolingCoolingOS
XSPC Raystorm CPU BLOCK EK Nickle/Acetal 290x Block  2x XSPC 240MM Radiator Windows 8.1  
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Qnix Evolution II  Cooler Master Quickfire Rapid  Cooler Master V1000 Fractal Arc Midi R2 
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XSPC Raystorm CPU BLOCK EK Nickle/Acetal 290x Block  2x XSPC 240MM Radiator Windows 8.1  
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post #8165 of 25888
Quote:
Originally Posted by HardwareDecoder View Post

If I change the pixel clock manually it lowers it to whatever hz it feels like.

Like, I can't just lower the pixel clock without it changing the refresh rate?

In CRU if you go to custom timings there is options for "total pixels" and options for "front porch". These and th other timings options will be what you use to manipulate the pixel clock without changing the refresh. For example if your pixel clock is 486Mhz with your total pixels at 2760x1468 you can simply start with optimizing the lowest total pixels that will still display a picture. Meaning changing the total pixel slightly lower to 2750x1461 thus getting a pixel clock of something like 478Mhz and keeping the same refresh. This basically benchmarks the blanking intermediary state of the monitor. This is a kind of overshoot that all monitors do to make sure they are able to always display a picture. What you will be doing is optimizing your monitor to the limit and leaving little to no room for error at the benefit of reducing the bloated data rate.

You can find more info regarding this by finding my old post(again that i wont be reposting, search "front porch" and you will find it pretty easy". You can also check out the CRU thread for some very in depth timings handling and the catleap thread has quite an extensive research behind timing optimization. Lastly 120hz.net has some good threads that i read over in my research and optimizing. I definitely recommend knowing what all this does before you start.
Quote:
Originally Posted by jerrolds View Post

Unfortunately only works one way - set the timings and you get the calculated pixel clock.

I think he was changing from teh refresh option to the pixel clock option thus working backwards and not being able to do any direct optimization.
Edited by Spartan F8 - 10/16/13 at 9:45am
post #8166 of 25888
Quote:
Originally Posted by HardwareDecoder View Post

hmmm So that likely means i'm stuck @ 117hz then? I'm just not sure what to change to go for 120hz.

I haven't even done the frame skipping test yet @ 120hz so i'll need to do that before I call it working anyway.

I will probably just use 96hz anyway as this looks pretty dark.

No matter what level of overclocking you do it is going to through off the gamma shift. This is a side effect of the over bloating pixel clock and lack of factory calibration. I would recommend calibrating the monitor at both refreshes and see how good a picture you can get, then decide(after pixel clock optimization).
post #8167 of 25888
Quote:
Originally Posted by HardwareDecoder View Post

hmmm So that likely means i'm stuck @ 117hz then? I'm just not sure what to change to go for 120hz.

I haven't even done the frame skipping test yet @ 120hz so i'll need to do that before I call it working anyway.

I will probably just use 96hz anyway as this looks pretty dark.



Not my pic, but those should work.
post #8168 of 25888
I am getting a Mac Mini (for work) and was planning on getting a third of these monitors, so then on my desk, there would be three of them (would look amazing) but then thought, wait, does the Mac Mini have Duel Link DVI? No, I don't think so? Are there anyways I can use these monitors with it?
post #8169 of 25888
You can use (mini) Display Port -> Dual Link DVI *active* adapter - but most only go up to 350mhz, when i tested my adapter i could only overclock up to 80hz or so
post #8170 of 25888
Quote:
Originally Posted by jerrolds View Post

You can use (mini) Display Port -> Dual Link DVI *active* adapter - but most only go up to 350mhz, when i tested my adapter i could only overclock up to 80hz or so

80hz ain't bad, thanks for the tip.
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