LCDs with 15KHz and 24KHz analog RGB

[alamone]

Cross-posting this as people here might be interested in this as well.
This list is for LCDs that can accept 15KHz or 24KHz through the 15 pin VGA HD connector.
Personal tests (marked by Src: me) based on 24KHz / 15KHz output of Gradius IV PCB.

24KHz:
Dell U2211H (probably also U2311H) (eIPS) - works perfect, but note that the newer models e.g. U2312HM do not work - blank screen. Src: me
Dell 2209WA (eIPS) - works partially - vertical portion of the screen is cutoff but still playable - I don't have this LCD anymore. 15KHz out of range. Src: me
NEC EA231WMI (eIPS) - not sure if it's exactly this model, but I confirmed that a rotatable NEC IPS monitor worked with 24KHz, although I had to plug/unplug a few times before it detected the signal. Src: me
Mitsubishi RDT234WX (IPS) - works perfect, but this model is Japanese market only. 15KHz is out of range. Src: me

15KHz & 24KHz:
HYUNDAI W240D (IPS matte) and W241DG (IPS glare). Some signals needed to be transcoded to component and fed into the D-terminal input. Src: http://wutchy.wordpress.com/2009/12/09/ ... %EF%BD%AF/
Mitsubishi MDT242WG (A-MVA). Tested SNES, Saturn, PS1 Src: http://c.2ch.net/test/-.YlY0/i4004/1063315568/-320a
Mitsubishi MDT243WG (A-MVA). Tested SNES, Saturn, X1, PC9801(24KHz), X68k, but Megadrive v1 out of range. Src: http://d.hatena.ne.jp/rem_link/20091119
Acer P244wbii (TN). Src: dieKatze88

I believe there are a few BenQ and Dell models that do 15KHz but are TN monitors.

[dieKatze88]

Acer P244wbii, it handles the 25khz signal from a Gradius IV (I also have one) but Gradius IV puts out a pretty nasty 15khz signal and the monitor doesn't like it. It likes OTHER 15khz signals however. It also takes Component input over the VGA connector, if you can strip the sync off the green.

[Fudoh]

But in addition to the "if" (the display accepts 15 and 24khz), it would certainly be interesting to learn about the "how" (good the display handles those inputs).

It's a bit vague to say that a LCD "natively" scans down to 15 or 24khz, when there's a required processing step after that.

[alamone]

Acer P244wbii, it handles the 25khz signal from a Gradius IV (I also have one) but Gradius IV puts out a pretty nasty 15khz signal and the monitor doesn't like it. It likes OTHER 15khz signals however. It also takes Component input over the VGA connector, if you can strip the sync off the green.

Added to the list. I'm assuming then that most "normal" 15KHz signals works on this monitor?

But in addition to the "if" (the display accepts 15 and 24khz), it would certainly be interesting to learn about the "how" (good the display handles those inputs).

It's a bit vague to say that a LCD "natively" scans down to 15 or 24khz, when there's a required processing step after that.

You're right that "natively scanning" is more of a CRT term so I rephrased that.
As far as more detailed specs, I might go do that at a later time, but I figured that people can just Google the model number for detailed info.
The Mitsubishi in particular has a lot of scaling modes and is probably the best suited monitor of this lot, but I think all of the monitors
at least allow for 4:3 full screen scaling. Right now all my gear is packed for a move so I won't be able to do detailed tests till later.

[jepjepjep]

NEC EA231WMI (eIPS) - not sure if it's exactly this model

Yes, that's the one that we used at the Oct. shmupmeet.

[dieKatze88]

Acer P244wbii, it handles the 25khz signal from a Gradius IV (I also have one) but Gradius IV puts out a pretty nasty 15khz signal and the monitor doesn't like it. It likes OTHER 15khz signals however. It also takes Component input over the VGA connector, if you can strip the sync off the green.

Added to the list. I'm assuming then that most "normal" 15KHz signals works on this monitor?

Yeah. It likes everything I've thrown at it except Gradius IV in 15khz. Gradius IV in 15khz doesn't give signal out of range or anything useful, the monitor just goes berserk.

[glstar]

I know it's an old discussion, but just want to share my experience too....
The Nec Multisync 1550M works perfectly both 15-24khz, but some boards (like neogeo mvs for example) have the image rolling....
So to solve this i have to use an arcadeforge sync strike.
With this board all is perfectly working....

[Lawfer]

Not a single 4:3?

[glstar]

Not a single 4:3?

Well....
This one is 4:3 Nec Multisync 1550M

[Lawfer]

Not a single 4:3?

Well....
This one is 4:3 Nec Multisync 1550M

Oh okay I was referring to the opening post though.

[Ed Oscuro]

A 4:3 frame is probably less important than (for example, in the Dell U2211H) 8 years of technological progress. I would not be terribly excited about the prospect of playing on a 12-year-old MultiSync 1550M. Also, that case, lol! When they mention 25ms, I assume that's a GtG response time.

[Lawfer]

A 4:3 frame is probably less important than (for example, in the Dell U2211H) 8 years of technological progress. I would not be terribly excited about the prospect of playing on a 12-year-old MultiSync 1550M. Also, that case, lol! When they mention 25ms, I assume that's a GtG response time.

Dunno, it makes sense to me to play 4:3 games on a 4:3 screen, so if your going to go through the trouble of looking for a monitor that does 15Khz and 24Khz analog RGB to play 4:3 games, it would (in my opinion) make sense to get a screen with the appropriate aspect ratio. You dont have to get a monitor with 25ms, you could get something between 5ms to 12ms.

[Xyga]

Those monitors are completely obsolete today, if you have some 24Khz source you'd better invest in a Micomsoft XPC-4, plus a decent modern monitor.

[Lawfer]

a decent monitor

This:

http://www.amazon.com/Sony-GDM-F520-Tri ... B000058AN8

[Xyga]

Why yes, if you can find one in great shape that is.

But old-ass lcd monitors ? No.

[Lawfer]

But old-ass lcd monitors ? No.

Definitly not (CCFL is obsolete by todays standards and yellowing is a side effect), unless they are new and you can get them for 50 bucks.

I have an LG Flatron LG1730S that I used from mid 2008 till mid 2012 and the whites became actually yellow.

[Ed Oscuro]

Can you actually replace the CCFL, or does it require the diffusion sheet to be replaced? Or something else?

[Lawfer]

Can you actually replace the CCFL, or does it require the diffusion sheet to be replaced? Or something else?

Oh I replaced it alright, I got this instead:

http://www.amazon.co.uk/LG-W2420R-wides ... B002FTRFQ6

[Ed Oscuro]

I imagine that with the newest monitors, and an appropriate Micomsoft scaler, you are getting better performance than the old ones. Let's say the Micomsoft scaler is using the minimum of time to scan convert and scale, and then new monitors don't necessarily perform badly in input lag and pixel response time. The old tech just wasn't there for speed, in at least one area, and probably in all three.

Edit: for clarity

[Xyga]

Yes since around 2012 IPS and VA monitors have leaped forward in terms of response and lag performance.
Anything before that was bound to have higher input lag by at least 1 frame more than today's average, and poorly implemented RTC/overdrive.
TN is not worth mentioning.

[uroko-sakanabito]

any new finds here?
looking for one in europe for my pc98