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Alexandre Botella Published on June 24, 2010
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  • Screen size 23 inches
  • Panel type IPS
  • Resolution 1920 x 1080 pixels
  • Response time 8 ms
  • Inputs (HDMI / DVI / VGA / Component) 0 / 1 / 1 / 0
  • Other details Display Port input; height-adjustable stand, rotates, pivot mode; 4 port USB hub
After the Dell U2211H reached our top score of five stars last week, it's only fair to expect similar results from its 23'' big brother.  And from the look of their specs, it seems that the only thing that separates the two monitors is their size.

Then again, if all you had to do to learn about a product was reading its tech specs, then DigitalVersus wouldn't need to exist ... and lots of you would probably end up disappointed when your new purchases don't live up to manufacturers' promises.

Build Quality and Design: Good, but could be better

Just like the 22'' version, the U2311H has great hardware with a height-adjustable stand, a portrait mode and VGA, DVI and Display Port inputq, with a four-port USB hub.  We remain disappointed by the absence of any audio features at all.

Good colours with the default settings, even better after calibration

Measured Colours

Ideal Colours
Compare the Dell U2311H to other LCD monitors in our Product Face-Off

By default, the U2311H accurately reproduces colours, with a deltaE of 2.8, where scores of under 3.0 are considered acceptable.  Still, the 23'' still suffers from a slight blue tinge and shades of grey that are a little too light.

Moving from the Standard colour mode to Warm, you completely get rid of the excess blue and correct the level of brightness in different shades of grey.  This setting does add a little pink to pure white, but the overall effect is positive, brining the deltaE to 2.1.

With results like this, this monitor will answer the needs of the majority of users.  Only people who do a lot of intensive photo work or professional video editing will find fault, and they can use our calibration profile to perfect their results.

Responsiveness: A little slow for FPS

Coloured   Transparent
Average ghosting
over ten frames

We didn't notice any difference in terms of responsiveness between this model and its 22'' counterpart: rapid moving objects are smooth, but not quite as fluid as on the best gaming monitors.  FPS fans will prefer the 2209WA, or better still, a 120 Hz display.

The same is true for the input lag, which remains below the perceptible threshold, so you won't be able to blame it if you mess things up at your next multiplayer session.


Although the U2311H keeps blurriness in check, you can't rely on it for upscaling.  You should go for a specialist player (either hardware or software) to do the job.
An excellent contrast ratio, narrow viewing angles
The U2311H beats the U2211H's contrast hands down with a contrast ratio of over 1100:1, whether you use the default setting (brightness of around 234 cd/m²) or when you turn the backlighting down to its minimum level of 100 cd/m². When you remember that IPS panels have a reputation for having poor contrast ratios, this 23'' monitor produces quite astounding results.

On the other hand, the viewing angles are narrower than we have come to expect from IPS. To give you some numbers, we found this monitor was 30% less bright when seen from a horizontal angle of 45°, but another IPS, the Dell 2209WA, only loses 15% at the same angle. Things are even worse from above: while the 2209WA only varies by 20% between the axis and a 45° angle, the U2311H loses 60%.


  • Default colours are accurate
  • Great hardware
  • Low energy consumption for an IPS monitor
  • Above average contrast


  • A little slow for FPS gaming
  • Narrower viewing angles than most IPS displays
  • No HDMI input


The U2311H is very rounded monitor with good performance in a lot of areas. It's an ideal choice for users who do a little bit of everything. For just a little bit more than the U2211H, it has a better contrast ratio and more accurate colours, too.
5 Dell U2311H DigitalVersus 2010-06-24 00:00:00
Compare: Dell U2311H to its competitors
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