My configuration: Dell U2713HM connected to a MacBook Pro (13-inch, mid-2012, OS X 10.9.5, Intel HD Graphics 4000 1024 MB) using an Accell B143B-003J UltraAV Mini DisplayPort to DisplayPort 1.2 cable
The monitor displays at full 2560x1440 resolution. The problem is that my eyes get REALLY tired when I look at a lot of text. I thought I could solve the problem by lowering the resolution when I have a lot of reading to do (as suggested by author of the TFT Central review of the U2713 at http://www.tftcentral.co.uk/reviews/dell_u2713hm.htm.) However, this has not worked for me. The lower resolution is completely unusable because it is associated with a really low refresh rate (which I cannot find a way to change).
Here's how I lowered the resolution of the monitor:
- On my MacBook, navigated to Display under System Preferences.
- Changed the Resolution setting from "Best for display" to "Scaled". Three choices are now listed: 2560x1440, 1080i, and 720p.
- Selected 1080i.
- Immediately reverted back to 2560x1440 because of extremely bad display flicker.
My questions: How come TFT Central was able to lower the resolution on the U2713HM but I can't? (Quoting from their review: "The screen is perfectly capable of being run at a lower 1920 x 1080 resolution if you wanted to, without much degradation in the picture quality and sharpness.") Is there another method to lower resolution that might give good results for my particular h/w and s/w configuration?