Reply 120 of 144, by shamino
1280x1024 5:4 TN, 8ms rise+fall response time. Officially supports 60Hz and 75Hz input. ~2005 monitor.
I've opened 2 of these. An earlier unit had a Samsung LTM190EX-L01 panel, a later one had an AU Optronics M190EN04. The unit used in this test has the AU Optronics panel, but I don't think that makes any difference for this test. Both should behave the same.
According to the datasheets, the Samsung LTM190EX-L01 panel supports VSync from 50-75Hz. The AU Optronics M190EN04 supports 56.25-77Hz (maybe the max has a tolerance from 75-77Hz, not sure I'm reading that part correctly). So the lower end of the range differs between panels, but that doesn't mean the video interface board will allow those rates.
I noticed that the 2 panels have very different specs for the rise and fall response times, one is faster at rising and the other faster at falling, but both add up to 8ms rise+fall as advertised for the monitor.
Side note: Even though both of these panels were used in Samsung 930B monitors, they have very different pinouts and are not compatible. I smoked something on the Samsung paneled unit when it's backlight died, and I swapped a panel that had the same pinout as the AU Optronics. After looking at the panel datasheets it's clear that was a mistake.
Samsung 930b with AU Optronics M190EN04 panel
Tested with Geforce2 MX AGP card.
This monitor stretches everything to 5:4.
When I originally ran this test, I noted some flickering of the screen in some modes. I've left those notes but I don't think the flickering is actually a monitor issue. I believe it's caused by "PC Players Benchmark" being a performance benchmark which doesn't use Vsync. This results in flickering, how much will vary with the speed of the system used. On another monitor where I saw the same issue, the flickering was gone when I ran real games.
DOS Command prompt: 5:4
DOS 320 x 200 game: 5:4 stretched, stable for first 1-2mins, then picture starts jumping occasionally.
DOS 640 x 400 game: 5:4 stretched, flickers occasionally, probably caused by lack of vsync in this test.
DOS 640 x 480 game: 5:4 stretched, after a few mins I did see a very rare flicker, it took some patience to catch it
DOS 800 x 600 game: 5:4 stretched, very rare flicker as with 640x480
DOS 1024 x 768 game: 5:4 stretched, stable
DOS 1280 x 1024 game: 5:4 native, stable
DOS 1600 x 200 game: 5:4 stretched, stable. Scales down to native res. OSD reports 1600x1200 but pops up the "non optimal resolution" warning. Lower modes didn't produce that warning.
Windows 640 x 480: 5:4 stretched
Windows 800 x 600: 5:4 stretched
Windows 1024 x 768: 5:4 stretched
Windows 1280 x 960: 5:4 stretched
Windows 1280 x 1024: 5:4 native
Windows: 1600 x 1200: not selectable (haven't figured out how to force it in Win98SE, but monitor should scale to native res as above. Have had this happen in a linux GUI, pretty sure it was stretched 5:4 like everything else)
Text vertical scrolling: 5:4, smooth scrolling