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The Samsung 240T is obviously reaching out to the higher end markets and providing those users with a massive screen space.
87% Rating: 
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Samsung 240T |
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TFT Display Evaluation Notes
| PCstats TFT Display Evaluation
Criteria: |
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We evaluate the quality of TFT displays with
the help of a program called Nokia Monitor Test. The software application
displays a range of colours and test patterns that can help diagnose just
about any visual problems or defects a TFT display may contain. It can
also be a very useful tool for properly adjusting a display to the optimal
settings. The software consists of eleven tests which can be run in steps
as adjustments are made to the OSD. As the tests are run we look for the
following problems, only one of which should be inoperable (broken pixel).
Broken Pixels: What we class as a 'broken pixel' can
fall under any one of the following circumstances: Pixel always on (any
colour), pixel always off, pixel unable to display a shade (red, green,
blue, black, white), pixel shown colour gradient.
Pixel Clock: If the number of dot clocks within one
horizontal synch are not properly configured the screen will appear to
drift or vertical stripes may be generated. This should be correctable by
the on screen menu.
Phase: If the phase of the display data and dot clock
are not correctly tuned the screen can flicker, or text be displayed
blurry. For example text may appear dithered, or when looking at a test
pattern of a one-pixel black, one-pixel white checkerboard pattern the
pattern may be distorted. This should be correctable by the on screen
menu.
Response Time: We look for any streaking associated
with moving a full page of text up or down quickly. Displays with slower
refresh rates tend to show some degree of image streaking or text
discoloration which can be distracting.
Stand Stability: TFT displays are fragile components and the
stand should offer adequately stable support as well as be easily
adjustable.
We deduct marks for quality control if there are any predominant
broken pixels in a display. While many manufacturers may consider a
few broken pixels acceptable, we believe the high cost of TFT displays
should translate into a clear and unblemished image. |
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| Display Test System
Configuration: |
| Video Card: |
ATI Radeon 8500 |
| Operating System: |
Windows 2000 |
| Display Settings: |
Color Temp: 6500 Kelvin
Resolution: 1920x1200
pixels
Frequency: 60Hz, analog
Colour: 16
Bit | |
| Display Resolutions: |
|---|
| Resolution |
Freq Hor. |
Freq Ver. |
Pixel Clock |
Standard |
| 720x400 |
31.5kHz |
70Hz |
28.3MHz |
VGA |
| 640x480 |
31.5kHz |
60Hz |
25.2MHz |
VGA |
| 640x480 |
37.5kHz |
75Hz |
31.5MHz |
VGA |
| 640x480 |
43.3kHz |
85Hz |
36.0MHz |
VGA |
| 800x600 |
46.9kHz |
75Hz |
49.5MHz |
SVGA |
| 800x600 |
53.6kHz |
85Hz |
56.3MHz |
SVGA |
| 1024x768 |
48.4kHz |
60Hz |
65.0MHz |
XGA |
| 1024x768 |
60.0kHz |
75Hz |
78.8MHz |
XGA |
| 1024x768 |
68.7kHz |
85Hz |
94.5MHz |
XGA |
| 1280x1024 |
63.9kHz |
60Hz |
108MHz |
SXGA |
| 1280x1024 |
79.9kHz |
75Hz |
135MHz |
SXGA |
| 1600x1200 |
75.0kHz |
60Hz |
162MHz |
UXGA (analog only) |
| 1920x1200 |
75.0kHz |
60Hz |
193MHz |
WUXGA (analog only) | |
| LCD Display Test |
Overall |
Test Notes and Observations |
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| Geometry: |
Pass |
Geometry remains true to size as we tend to
expect. When the screens are set to PBP, the geometry becomes
distorted as the signal is augmented at the monitor level, and not the
computer.
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| Brightness and Contrast: |
Pass |
The initial
1-9% show a somewhat inconsistent change in intensities - the larger more
definite changes in contrast are much better represented here.
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| Colour: |
Pass |
With a screen of this size, colour consistency
over the entire area is a real concern. The 240T scores very high
here, with consistent coverage, and nice hues of white, red and blue. The green is a little on
the orange side, and this may have an effect on colour vibrancy. No dull,
or broken pixels were visible.
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| Convergence: |
Pass |
The test grids in RGB illustrate the worst case
situations when different coloured pixels must work closely together, and since they comprise different parts of a pixel
they do not line up exactly. With a field of
view as large as this is it really hard to notice though.
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| Focus: |
Pass |
Very good, all patterns are clearly visible
and defined in both the horizontal and vertical axis. Shaded areas were
experiencing some walking lines, but after manually adjusting the image lock
they all but disappeared.
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| Resolution: |
Pass |
Resolution is excellent at 1920x1200 pixels. The
auto adjust key worked well as a first start, but in testing with some of
the more difficult patterns it was evident that some manual tweaking was
required to achieve the best picture. There is only one frequency
available at this size (60Hz) and the monitor indicated the the signal was holding steady
at 59.8 Hz so the video card may have been causing
some slight hiccups.
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| Moire: |
Pass |
Moire was excellent after the one adjustment was made to the
image lock. Previous to this manual setting the more intensive single
pixel moire test screens were suffering from horizontal walking lines.
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Other Evaluation Notes: |
Excellent |
With a listed 25ms pixel refresh rate and viewing
angles of 80/80/80/80 the 240T is pretty astounding from head on. Looking
from large angles begins to show its limitations as the screen takes over
a very slight frosted look, with colours appearing de-saturated. Visually, the 240T
is great for large screen projects, or imagery, but not necessarily
games. LCD's in general are still not quite up to the quickness of CRT's
in this respect, although the 240T does have a very good
pixel refresh rate of 25ms.
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