Acer 23.6" UHD 4K 3840×2160 IPS monitor CB241HQK £199.97 @ eBuyer
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Acer 23.6" UHD 4K 3840×2160 IPS monitor CB241HQK £199.97 @ eBuyer

£199.97Ebuyer Deals
11
Found 25th Apr 2017
Saw this on eBuyer's Daily Deals page. Under £200 is pretty good for a 24" IPS UHD monitor with decent adjustable stand.

It previously sold for £169.99 for a short time back in July 2016, but since the GBP-USD exchange rate tanked has sold for significantly more.

- IPS panel, 3840×2160@60Hz native resolution
- Near-100% sRGB colour gamut
- DisplayPort
- DVI
- HDMI 2.0
- Built-in speakers, audio line-in and headphone out
- Height/tilt/pivot-adjustable stand
- VESA-mountable

I have one of these, happy to answer any questions.

Image quality is fine, but be aware that the scan converter/scaler in the monitor converts source video to 60Hz by duplicating frames. While you can input 1920×1080p@50Hz (say) and it says that on the OSD, the panel is always refreshed at 60Hz so one in five frames is shown twice. That means smooth motion isn't actually smooth. You can demonstrate that by going to testufo.com, first with PC desktop set to 60Hz (smooth motion), then set desktop to 50Hz and repeat (juddery motion).

Also, the monitor's EDID data claims it supports 1080i (interlaced) at both 50Hz and 60Hz, but it shows an input not supported message for 1080i@50Hz. But most people would never notice or care about that.

Finally, the OSD (probably the same as other Acer monitors) is a bit of a pain. To adjust brightness requires 6 button presses until you can adjust it up/down, then another three to remove the OSD (or wait for it to disappear).

User manual and quick-start guide downloadable from Acer
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11 Comments
Original Poster
taras

http://www.techradar.com/reviews/pc-mac/monitors-and-projectors/monitors/acer-cb280hk-1299426/reviewhdmi 1.4 and poor colour reproduction .. its being discounted for a reason ..

D'oh, that's a completely different model of monitor with a 28" TN panel!

Edited by: "Donuts123" 25th Apr 2017
Donuts123

D'oh, that's a completely different model of monitor with a 28" TN panel!



yesh a d'oh by me - i was just checking the model numbers and then deleted my post :P
Wow, with all those cold votes lots of people must know where to get it cheaper!
Anyone? No?
This place...
Edited by: "jukkie" 26th Apr 2017
Original Poster
Yep, tough crowd!
No way this should be cold. A lot of monitor for the price. I think 4K might be hard work on a 24" monitor though.
Does this monitor support picture-in-picture, is the bezel glossy and whats your view of the monitor (from a owners perspective)? I'd love to hear back because I am planning to get this monitor soon but still a little unsure. Debating personally whether I should go for the 28 inch 4K monitor from Acer or this 24 inch version
Edited by: "thegamingkinginfo" 13th May 2017
Original Poster
It supports PIP and picture-by-picture. You can choose which is the main and sub pictures, which corner of the screen the sub-picture occupies, and which input the audio comes from. The bezel is glossy black.

I was annoyed to discover the forced frame rate conversion. But if you always have your PC desktop set to 60Hz that won't be an issue. You might notice it if playing PAL Blu-Ray/DVDs or hooking up a FreeView box though.

Given the significantly lower price than any other IPS UHD monitor, it might make sense to get this to tide you over until 120Hz/HDR/whatever UHD monitors are reasonably priced.

But the 28" TN Acer supports FreeSync (so no 60Hz-only problem, I assume) and probably has a faster response time. If you can live with poorer TN viewing angles you might prefer that.
Donuts123

It supports PIP and picture-by-picture. You can choose which is the main … It supports PIP and picture-by-picture. You can choose which is the main and sub pictures, which corner of the screen the sub-picture occupies, and which input the audio comes from. The bezel is glossy black.I was annoyed to discover the forced frame rate conversion. But if you always have your PC desktop set to 60Hz that won't be an issue. You might notice it if playing PAL Blu-Ray/DVDs or hooking up a FreeView box though.Given the significantly lower price than any other IPS UHD monitor, it might make sense to get this to tide you over until 120Hz/HDR/whatever UHD monitors are reasonably priced.But the 28" TN Acer supports FreeSync (so no 60Hz-only problem, I assume) and probably has a faster response time. If you can live with poorer TN viewing angles you might prefer that.


Thanks for your reply, not liking the fact that the bezel is glossy though Would go for the 28 inch but space is an issue and not IPS which may be an issue. What do you mean about the forced frame rate conversion and how would the 28 inch monitor solve this? I will be using this with my computer most of the time but just curious in case I use it for something else in future
Original Poster
Monitors I've used in the past refresh the LCD panel at the same rate as the input video signal. So if you input a 50Hz signal (e.g. HDMI from a FreeView box or PAL DVD, or have your PC desktop set to 50Hz), that's the rate at which the panel refreshes. Smooth movement (e.g. horizontal scrolling in a game) is smooth on-screen. That's what I assumed all monitors did, within reason.

But the video scaler inside the Acer CB241HQK, instead of refreshing the panel at the same rate as the input video, always refreshes it at 60Hz. (That's not mentioned anywhere in the Acer manual or web site.) If the input video refresh rate is not 60Hz, it duplicates or drops frames as appropriate. So with 50Hz source video it duplicates one in every 5 frames. That means what should be smooth motion is noticeably less smooth. (The video scaler is the circuitry which up-converts lower-res input signals, e.g. 1920×1080, to the 3840×2160 panel resolution. It will also handle the PIP/PBP multi-source modes.)

I'm definitely going to make sure any monitor I buy in future doesn't do that. All FreeSync monitors should be able to properly refresh the panel at the same rate as the input video (variable panel refresh rate being the whole point of FreeSync), so the problem won't arise there. Other monitor brands/models which don't support FreeSync may or may not do similar frame rate conversion.
Edited by: "Donuts123" 13th May 2017
Donuts123

Monitors I've used in the past refresh the LCD panel at the same rate as … Monitors I've used in the past refresh the LCD panel at the same rate as the input video signal. So if you input a 50Hz signal (e.g. HDMI from a FreeView box or PAL DVD, or have your PC desktop set to 50Hz), that's the rate at which the panel refreshes. Smooth movement (e.g. horizontal scrolling in a game) is smooth on-screen. That's what I assumed all monitors did, within reason.But the video scaler inside the Acer CB241HQK, instead of refreshing the panel at the same rate as the input video, always refreshes it at 60Hz. (That's not mentioned anywhere in the Acer manual or web site.) If the input video refresh rate is not 60Hz, it duplicates or drops frames as appropriate. So with 50Hz source video it duplicates one in every 5 frames. That means what should be smooth motion is noticeably less smooth. (The video scaler is the circuitry which up-converts lower-res input signals, e.g. 1920×1080, to the 3840×2160 panel resolution. It will also handle the PIP/PBP multi-source modes.)I'm definitely going to make sure any monitor I buy in future doesn't do that. All FreeSync monitors should be able to properly refresh the panel at the same rate as the input video (variable panel refresh rate being the whole point of FreeSync), so the problem won't arise there. Other monitor brands/models which don't support FreeSync may or may not do similar frame rate conversion.



Thanks for the heads up, will try remember that for the future. Overall, would you recommend this? I heard some people say 24 inch is too small and text is too small on display, from your personal perspective what do you think?
Original Poster
For the price I would recommend it. If you need/want an IPS panel, alternatives include the LG24UD58 (£279.97 Amazon) or LG27UD58 (£289.97 Amazon). You may as well ignore the 24UD58 since it's only £10 more for the 27" LG.

For the LG costing 40%+ more you get FreeSync, but it has a poor stand (no height or pivot adjustment). The LG 27UD68P has a better stand but that's £399.99 on Amazon, so literally double the price of the 24" Acer.

I banged on a bit about the Acer not supporting non-60Hz modes natively, but for most users that won't be an issue. And I have no idea how common it is with different model non-FreeSync UHD monitors.

I'm using Windows 10 and the scaling settings mean you can adjust the size of text and images fairly easily. Things like web browsers or text editors have nice sharp text. I would probably prefer a larger screen simply because it'd be nicer for playing games on, and you could always sit a bit further back from it if need be. But not for "text is too small and I can't change it" reasons.
Edited by: "Donuts123" 14th May 2017
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