Issues after I overclocked my Qnix 2710

[T.R.A.N.C.E.]

So I have the qnix at 96hz (max stable I can get is 115hz), But I have noticed that after I overclock, there is increased ghosting or image retention like phenomenon, Is this normal? Its really ruining the point of the overclock for me as even though it "feels" smooth, the slight ghosting makes it visibly "look" not smooth What can I do, are they all like this? Or is it just mine, in which case I would try get another one.

Edit: I believe what might be happening is that at higher refresh rates the PLS panels response time becomes more apparent, and the limiting factor in the setup, would this be a correct deduction? I'm really not pleased with it either way as the blur just looks plain bad in fast movements in games. Maybe I should get an ugly looking TN

[ToastyX]

Image retention, ghosting, and motion blur are three different things.

Image retention or image persistence is when a faint afterimage gets stuck on the screen for a few minutes, like temporary burn-in. That's actually a common problem with the QNIX at higher refresh rates, but it doesn't sound like you're talking about that. Some panels handle this better than others.

Ghosting is faint afterimages caused by slow pixel response times. Ghosting shouldn't affect smoothness, but it may cause a slight smearing effect. This shouldn't be a major problem with PLS panels, but high refresh rate TN panels can handle it better. Even though ghosting is separate from motion blur, it can make motion blur worse when your eyes are tracking motion on sample and hold displays.

Motion blur is caused by retinal persistence combined with sample and hold displays. The image that sticks to your eyes blends with the image that's still on the screen, causing a blurring effect when your eyes are tracking motion. Higher refresh rates should reduce this kind of motion blur, but the only way to completely eliminate it is to strobe the backlight.

Most LCD monitors have motion blur because they are sample and hold displays. The only ones that don't are the ones that combine high refresh rates with strobing backlights such as the LightBoost monitors or the new EIZO FG2421. The EIZO uses a VA panel and is currently the only non-TN consumer LCD monitor available with a strobing backlight.

One thing I should mention is make sure you are using a mouse with a 500 Hz or 1000 Hz polling rate. A standard 125 Hz mouse will clash with the 96 Hz or 115 Hz refresh rate and cause jumpy motion.

[T.R.A.N.C.E.]

Well from those phenomenon it sounds like I'm experiencing ghosting the most, (the motion blur I'm getting does not bother me much) but its the ghosting like effect I can see that's taking away from the high end feel of the monitor. Its just like you describe, a smearing effect, even with small but fast movements making the image seem hazy at times. Even though you say ghosting should not be bad on PLS and higher refresh rate should counter it, I feel the ghosting on my monitor is bad no matter what the refresh rate, and is more noticeable at higher refresh rates. And my mouse is a set to 500mhz polling (capable of 1000mhz though).

Is it possible my panel is not very good with ghosting, or should they all be similar in this regard?

[ToastyX]

Ghosting doesn't normally vary by panel. The QNIX doesn't have overdrive, so the pixel response times might be too slow for you. I think the sample and hold effect has a far bigger impact though. The monitors with strobing backlights have very clear motion.

[T.R.A.N.C.E.]

(11-27-2013 04:42 AM)ToastyX Wrote:  Ghosting doesn't normally vary by panel. The QNIX doesn't have overdrive, so the pixel response times might be too slow for you. I think the sample and hold effect has a far bigger impact though. The monitors with strobing backlights have very clear motion.

So then there is no modded drivers or software that can replicate overdrive is there? Surely a genius like you could come up with some

In that case can you tell me if the Korean monitors with LG S-IPS or H-IPS panels are a bit better with ghosting/pixel response than my Samsung PLS?

And are there any affordable 27" monitors that use strobing backlights?

[ToastyX]

There's no way to implement overdrive with software, and none of the overclockable Korean IPS monitors have overdrive either.

All the 27" models with strobing backlights have TN panels and are 1920x1080. The cheapest one currently available is the ASUS VG278HE, but there's some inverse ghosting in LightBoost mode. Even without LightBoost, it should have better motion performance than the QNIX.

There aren't many options if you want a 2560x1440 monitor. You'd have to go with a non-overclockable name brand monitor such as the ViewSonic VP2770 if you want decent overdrive and 2560x1440, but 60 Hz would kill the benefit in my opinion because of the sample and hold motion blur.

[T.R.A.N.C.E.]

I guess I will have to stick with my qnix then, until there is some innovation in the monitor space. I will wait for one of these Dells when they reach 120hz
http://accessories.us.dell.com/sna/produ...u=210-ACBL

[Dragonheart]

AMD Catalyst have an option of disabling LCD overdrive which work seperate from monitor's overdrive in my case. Dunno what are the requirements to support this feature in catalyst.

[Black Octagon]

(12-21-2013 03:34 AM)Dragonheart Wrote:  AMD Catalyst have an option of disabling LCD overdrive which work seperate from monitor's overdrive in my case. Dunno what are the requirements to support this feature in catalyst.

Sure you're not referring to AMD's OverDrive tab for moderate GPU overclocking? Because that is a totally different thing to Overdrive technology in monitors

[ToastyX]

CCC has an "LCD overdrive" option, but I've never seen it work. It doesn't seem to affect anything.