HP z27x Review
by Chris Heinonen on December 2, 2014 4:00 PM ESTLag is measured using the Leo Bodnar lag tester. It uses 1080p over HDMI so it cannot run at the native resolution. The HP z27x does let you turn the scaler on and off, letting you use a 1:1 pixel mode, so I can attempt to see what impact the scaler makes.
In 1:1 pixel mapping, the input lag is 33ms. Considering there is a 3D LUT in the display, this performance is pretty good. It is still two full frames in a 60fps game, but it might be acceptable to people. Turning on the scaler adds 1.5ms of lag, which is completely inconsequential. Most people will want to run content at the native resolution but if you have to scale it you will see virtually no impact when it comes to lag.
We covered the different gamut options for the HP z27x earlier, but it has a very large gamut in native mode. It does 152.1% of the AdobeRGB gamut, easily the best we have ever measured. If you need to work in larger color gamuts like DCI, the HP z27x has you covered.
At maximum power, the HP z27x uses 61 watts of power and at minimum it uses 28 watts. Both of these numbers are average looking at other 27” monitors, but considering the other features this is quite good. The backlight can produce a very wide gamut and thankfully it doesn’t have to consume extra power in order to do so.
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ant6n - Wednesday, December 3, 2014 - link
@Chris: when seeing this article in rss, it's not clear that this is a monitor review (the word 'display' comes up nearly last).chowyuncat - Wednesday, December 3, 2014 - link
Could you put Apple's 27" Cinema or Thunderbolt display's input lag in your monitor reviews?cheinonen - Sunday, December 7, 2014 - link
I don't have one so I can't do that, and they don't have HDMI ports so I can't measure it the same way either.marsupilami - Friday, December 5, 2014 - link
Am I the only one who thinks this article lacks an introduction?Good review otherwise although I agree with kyuu regarding the uniformity issue, unless the monitor was purchased by AT I don't see how requesting another sample would've made a difference. And even then you can publish both sets of numbers and let the readers draw their own conclusions. As it is we have no clue whether the results are due to a damaged sample or simply poor performance.
SanX - Sunday, December 7, 2014 - link
Who needs QHD? Who needs 27"? Are gamut pros happy that they dont have yet 4K minimum 30"- 40" monitors?mtbakerstu - Saturday, May 9, 2015 - link
Chris, thank you for what I thought was a very good review. My question is not just to you, but to the community that has participated in this forum as well. Is there any new consensus on the uniformity issue that Chris raised? It does seem an achilles heel, if the issue is not specific to the z27x unit that Chris evaluated. Since last comments posted, has anyone purchased (or know anyone that has purchased) a z27x to confirm or disclaim what Chris communicated as a serious issue for the model? There aren't many options that cover the full range of color gamma options at this price point, so I am inclined to buy one, but felt I should first check into the community. As an alternative, I am considering the z24x, but perhaps uniformity is an issue with this model as well. Thanks in advance for the any additional feedback from the community here.kflorian - Sunday, July 12, 2015 - link
Anybody have an accurate weight for this WITHOUT the base?