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Microcenter now carrying the 27" 2560x1440 Korean IPS monitors - Page 98

post #971 of 1116
Quote:
Originally Posted by kevinsbane View Post

Not if it's using U2711 panels.
U2711 panels (LG) use PWM Dimming. We have already confirmed PWM dimming on this monitor (both glossy and matte version), you obviously have not read the thread,
post #972 of 1116
Quote:
Originally Posted by Grimster View Post

U2711 panels (LG) use PWM Dimming. We have already confirmed PWM dimming on this monitor (both glossy and matte version), you obviously have not read the thread,
You're right. The post where you tested it also consisted of dubious information and flawed tests for input lag too, so I discounted it.
I couldn't find anything about U2711 PWM dimming, so seeing as your post was the only one on the entire internet that has complained about PWM dimming on the U2711 panel, I did not consider it reliable.
post #973 of 1116
Not sure what PWM Dimming is but I purchased my monitorrs yesterday. Have only tested one so far and it significantly stomps on what I was previously using. So far I'm a happy camper. biggrin.gif

Edit: Had to return the open box one I had purchased and go with a new one. It was more scuffed up than I would have liked, it was packaged poorly, and it was the glossy version instead of AG (i know i know, my monitors are next to windows and I frequently use a desk lamp)
Edited by wholeeo - 4/3/13 at 9:53am
post #974 of 1116
question about inputs on the glossy vs matte versions. should the matte version operate at full 2560x1440 via DVI ? mine doesn't seem to.

I have one of each - both open-boxed. as one of them came w/o one, got power adapter from Auria ($35 shipped, tho I had to send them a personal check (!) vs slightly more modern payment methods) for the second one so took it into work yesterday.

the glossy one has been working fine at full resolution via DVI on my ancient Dell (Precision 380 or 390, only 256MB of video RAM on whatever old nvidia card it has). at the same time I'd been running 1800x1440 via DVI on an even older Dell 21" CRT.

plugged in the matte one via DVI, was unable to get it to display anything more than 1680x1050. the video card recognizes 1920x1080 and 2560x1440 as being available resolutions, but the monitor does not react when switched to those resolutions. disconnected the glossy one to make sure that it wasn't the video card being maxed out, nope, still not full resolution via DVI. also swapped cables and say no change.

concerned that the matte one was perhaps defective, I pulled over a laptop (Dell E6420) hooked up to port replicator which has Displayport. with Displayport, it worked fine at 2560x1440. knowing that I would shortly be getting a new laptop myself I decided to set up as I would like it, both at full resolution. hooked the glossy one to the DVI (only of each input on the port replicator). which it then would only show at 1680x1050. I then swapped between the two and confirmed that both would indeed do full resolution via Displayport but not DVI. this lead me to believe that the video on the laptop was the culprit in terms of not being able to run both at their max.

so that leaves me here :

1) does the matte version indeed drive full resolution via DVI ?
2) does the behavior of my matte version indicate that perhaps there is something busted in the circuitry of the scalar/PCB board which drives the different inputs ?
3) if the matte version is indeed defective, should I care if it works with Displayport ? I will likely end up with either a desktop with 2x Displayport or a port replicator which has two (if I can get a definitive answer from Dell on whether the machine will drive both of them, as they told me over the phone, but which I'm not sure about now). I will have to ask Microcenter whether they have any other open boxed ones they'd trade me for the one which may have a bad PCB or if I have to pony up for the extra $100 from what I paid to get an unopened one.
post #975 of 1116
I can really only help you with your first question, I have two matte monitors. Both are connected via DVI (Dual Link) cables which came with the monitors.
post #976 of 1116
I presume that you are getting the full resolution as well ?
Quote:
Originally Posted by wholeeo View Post

I can really only help you with your first question, I have two matte monitors. Both are connected via DVI (Dual Link) cables which came with the monitors.
post #977 of 1116
Quote:
Originally Posted by b21ft View Post

I presume that you are getting the full resolution as well ?

Somehow forgot to include that in my post but yes, I am @ full resolution with both my monitors, no problems.
post #978 of 1116
Quote:
Originally Posted by b21ft View Post

disconnected the glossy one to make sure that it wasn't the video card being maxed out, nope, still not full resolution via DVI
did you try the matte on the same DVI port the glossy was on? On those older video cards with two DVI ports, it is likely that only one of them is dual-link. (I understand you were running the CRT on port 2, but 1800x is not really indicative of whether it will do 2560x.)
post #979 of 1116
that would point to there being something amiss with the matte screen one. I always find it strange when electronic items behave as if they are partially broken - the dumb guy in me says they should either work 100% or not at all. it's not like a bucket with a slow leak or a mechanical device which has too much friction in part of it's range of motion due to a bad bearing or something.
Quote:
Originally Posted by wholeeo View Post

Somehow forgot to include that in my post but yes, I am @ full resolution with both my monitors, no problems.
post #980 of 1116
yep, swapped between both of them and the glossy one works on both ports at full resolution. the video card in the soon to be replaced machine is an nvidia Quadro FX 3500 which I'm sure came with the box, which is from ~2007. I was amazed that it would run even one of the screens.

the matte screen shows green light but black screen (and the display settings tab doesn't even ask me whether the new resolution worked) on both 2560x and 1920x but doesn't work. it's academic at this point anyway with the machine being replaced.

will have to see what my MC location can do for me, and whether the eventual likely machine I'm going to get at work will be able to drive both of them correctly. I suspect I will end up holding out for an Optiplex 7010 when they are forced to deploy new ones, vs getting stuck with a re-deployed 780/790 which doesn't have Displayport. or the likely un-capable E6430, unless I spend more of my own money to buy a dual-displayport docking station, which I don't want to do until I confirm whether the E6430 will actually drive both displays anyway. it's a bit of a do loop...
Quote:
Originally Posted by austinpike View Post

did you try the matte on the same DVI port the glossy was on? On those older video cards with two DVI ports, it is likely that only one of them is dual-link. (I understand you were running the CRT on port 2, but 1800x is not really indicative of whether it will do 2560x.)
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