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This review is from: HP Promo Z24i 24" 8ms Widescreen LED Backlight LCD Monitor IPS 300 cd/m2 1000:1
Pros: 16:10, good color, non-pwm flicker-free backlight, no compatibility problems with MacOS, USB hub, good quality stand
Cons: Dead pixel and dark lower corners on first unit received, dark lower corners on second unit. Backlight uniformity was worse than cheap TN monitors from 4-5 years ago on two monitors in a row.
Other Thoughts: It would appear that we have a panel lottery. I tried two different D7P53A4 (HSTND-3771-Q) monitors which had Samsung panels--the Q suffix appears to mean the Samsung LTM240CL01 panel. Both had noticeably (distractingly) dark lower corners. For the second monitor I pulled a calibrated meter and measured 256 cd/m^2 at the brightest point at factory settings (and no color calibration on the computer) when the spec sheet indicates 300. The data sheet for the LCD panel itself says 250 minimum, so this panel just barely meets Samsung's own minimum specification and is nowhere near the typical spec. The lower right corner barely cracked 170 cd/m^2 which is 32% darker than the center of the panel and therefore pretty obvious, like a huge greasy fingerprint. HP also uses LG panels on these monitors. I contacted HP about this with photos and meter readings, I was told 32% dimmer corners are normal. The run-around was to be expected but still frustrating.
There are a few comprehensive reviews online, one of which indicated an LG panel and showed decent uniformity. Other folks are indicating good success with HSTND-3771-W which has an LG LM240WU8-SLD2 panel. I have no other data points other than the two units I received. If these go on sale, I might consider buying them, but right now I'm not feeling terribly positive about the panel lottery situation.
Pros: IPS quality at TN prices. IPS glow is very mild, anti-glare is much lighter than previous Dell monitors such as the U2412M; didn't seem sparkly or grainy to me. Quality adjustable stand and USB ports. NO PWM means no flicker! Good to see flicker-free monitors starting to show up in this price range. Has DisplayPort connection. Backlight uniformity not perfect but good for this price range.
Cons: 16:9 and not 16:10, USB is 2.0 not 3.0 (not a problem for things keyboard and mouse though).
Take note of other reviews that mention bad text quality. It's not a big deal for Windows users but a hassle for Macs. Here's what I found:
The pixel striping order of this monitor is blue-green-red (BGR) from left-to-right which is opposite industry convention. I confirmed this with a close-up photo of the display. This will cause bad text display (search online for sub-pixel rendering) with any computer, Windows or Mac. Windows has the ability to work with BGR or RGB equally well and can be configured using the ClearType tuning utility, which is why some other reviews had better text after tuning. But this has to be done before text will look decent--out of the box it will look crummy. Mac users have no such adjustment available and must mount the monitor upside down, then set OS X to rotate 180 degrees, to get acceptable text.
Other Thoughts: It's hard to imagine how this design made it past engineering review, given how the backwards pixel layout negatively affects even Windows users before ClearType is adjusted. I use a Mac and flipped the mounting plate on the stand 180 degrees (it can be unscrewed) and snapped the monitor back on upside-down. The vent holes are then at the bottom, but I didn't notice any heat build-up. On-screen menus can then be configured to rotate 90 degrees so that reading them is like reading the spine of a book instead of totally upside down. However, in portrait mode the on-screen display will be upside-down.
While the design is highly symmetrical from the front, with a nice thin bezel, I got tired of the sideways OSD (which you must use to adjust brightness). On sale it was a great value for the quality, but it's on its way back now.
In this general price range, consider the P2414H. It is also PWM-free and has standard RGB layout.