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CrossOver 27Q LED/LED-P, 27M LED, & 2720MDP GOLD LED Monitor Club - Page 412

post #4111 of 6483
Quote:
Originally Posted by Crazy9000 View Post

66hz seems to be what people are able to get usually.
hmm not really noticable i guess.
and how did they get it?
post #4112 of 6483
Quote:
Originally Posted by borgqueenx View Post

hmm not really noticable i guess.
and how did they get it?

Same way with the ones you could overclock to 120hz. I don't remember the exact process but it's pretty simple. I think you just install something and then change the Hz in nvidia control panel or whatever.
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post #4113 of 6483
You can try setting a custom resolution with custom refresh rate in Nvidia Control Panel. I don't know how AMD users would have to go about it.
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post #4114 of 6483
Quote:
Originally Posted by borgqueenx View Post

also, has some people been managed to overclock this monitor a bit? 70hz or 75hz for example? every bit is nice!
and if yes how? nvidia custom resolution or something?

None of this monitors can be "really" overclocked. As stated before, even when overclocked, the real frequency is still of 60Hz. The logic board in overclocked monitors can accept, for exaple, 90Hz, but when the signal arrives to the panel, the panel ranmit "only" 60Hz.

This was just a summary, you can read a more detailed explanation in previous comments

thumb.gif
post #4115 of 6483
Quote:
Originally Posted by zonzo3 View Post

None of this monitors can be "really" overclocked. As stated before, even when overclocked, the real frequency is still of 60Hz. The logic board in overclocked monitors can accept, for exaple, 90Hz, but when the signal arrives to the panel, the panel ranmit "only" 60Hz.
This was just a summary, you can read a more detailed explanation in previous comments
thumb.gif
there is no work-around for this problem by using a soldering iron or something?
post #4116 of 6483
Quote:
Originally Posted by borgqueenx View Post

there is no work-around for this problem by using a soldering iron or something?
There is a physical cable difference between the overclockable versions and the non-overclockable versions. Think of it this way as a metaphor; the non-overclockable versions use "single link DVI" to drive the panel, whereas the overclockable ones use "dual link DVI". The 66 hz limit is the limit of single link DVI - to go higher, you need to go dual link DVI.

In reality, the overclockable monitors use 2 LVDS links to drive the monitor from the control panel - this gives the monitor enough bandwidth to drive 1440p@120hz. The newer ones use a single eDP connection - hence the cap of 66hz. That is the limit of the eDP connection within the monitor itself.
post #4117 of 6483
Quote:
Originally Posted by kevinsbane View Post

There is a physical cable difference between the overclockable versions and the non-overclockable versions. Think of it this way as a metaphor; the non-overclockable versions use "single link DVI" to drive the panel, whereas the overclockable ones use "dual link DVI". The 66 hz limit is the limit of single link DVI - to go higher, you need to go dual link DVI.
In reality, the overclockable monitors use 2 LVDS links to drive the monitor from the control panel - this gives the monitor enough bandwidth to drive 1440p@120hz. The newer ones use a single eDP connection - hence the cap of 66hz. That is the limit of the eDP connection within the monitor itself.
whats LVDS? the one i bought has a dual link dvi. is it possible to scale down resolution then and get more hz?
post #4118 of 6483
Quote:
Originally Posted by kevinsbane View Post

There is a physical cable difference between the overclockable versions and the non-overclockable versions. Think of it this way as a metaphor; the non-overclockable versions use "single link DVI" to drive the panel, whereas the overclockable ones use "dual link DVI". The 66 hz limit is the limit of single link DVI - to go higher, you need to go dual link DVI.
In reality, the overclockable monitors use 2 LVDS links to drive the monitor from the control panel - this gives the monitor enough bandwidth to drive 1440p@120hz. The newer ones use a single eDP connection - hence the cap of 66hz. That is the limit of the eDP connection within the monitor itself.

Quoting:
Quote:
This monitor uses the same multi-input board as the Witech Multi Limited Edition, and a monitor pulled before release from Achieva Shimian, and one released by First Semiconductor (I have a prototype of it). The reason for that is the 125hz operation is bogus. The dvi controller board allows an input of up to 125hz. So your computer will say "Heya. I'm sending 125hz (or 130hz, in my case) to your monitor! All is well!". The monitor is saying "Oh sweet! A 125hz input! I can totally take that! Thank you!." Then it tries to pass it to the Timing controller attached to the LCD panel and the monitor is like "Hey...TCON...buddy, I got 125 of these frames for you. What??? What do you mean you can only accept 60 from me? Fine...I'll send you frame 1, 3, 5, 8, 10, 12, 15, etc...."

Basically...it frame skips. If it will accept an input higher than 60hz. The OSD will tell you that it's outputting 125hz. But it only ever sends a 60hz signal to the LCD panel itself. Sorry to burst your bubble.
post #4119 of 6483
so the limit is 66hz or 66hz before it starts frame skipping?
im kinda confused now.
post #4120 of 6483
Quote:
Originally Posted by borgqueenx View Post

so the limit is 66hz or 66hz before it starts frame skipping?
im kinda confused now.
It does one OR the other. Either it frame skips and is locked to 60hz by the controller board, or it doesn't frame skip, and is limited to 66hz by the eDP connection.

Typically what we've seen is ones with scalars and add-in boards and multiple inputs frame skip, whereas single input ones do not, but are limited to 66hz.

LVDS stands for low-voltage differential signalling. It's not something you can see in practise. It's used primarily inside the monitor itself to connect the input electronics to the LCD itself.
Edited by kevinsbane - 12/19/12 at 1:44pm
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