Hello everyone, I have both a Dell S2725QC and a Dell U2724D. If you have any question, please ask. I will have the U2724D until Tuesday.
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Afraid of purchasing the new Dell S2725QC
- Thread starter ilovemym1mba
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On the Dell Australia S2725Q page it says:
As per this reddit guy I quoted earlier, I suspect whether it's the S, P or U series, as long as it's a -24 (i.e., S2724 or P2724 or U2724) or later model, much of the flickering is gone.
Does anybody know if the only difference between the S2725QC and S2725S is that the former includes the USB hub?
Are there any other differences?
Dell 27 Plus 4K Monitor - S2725QS | Dell UK
Shop the Dell Plus 27 inch 4K Monitor with AMD FreeSync Premium, 120Hz refresh rate, dual 5W speakers, and 4-star eye comfort.
www.dell.com
Are there any other differences?
Only difference is USB-C connectivity.
Q = 4K
S = height adjustable stand
C = USB-C
All Dell USB-C monitors have HAS, so "S" isn't needed when "C" is already featured.
E gives you an Ethernet port.
The P-series usually gets you a panel with better uniformity and less bleed. It's not something they list in the spec sheet. P-series also get standard 3-year warranty, higher USB-C PD rating, and a couple cm of height adjustment (better stand).
So just to potentially help people looking for it in future, I got S2725QS (firmware: M3B101, I don't believe there's newer firmware at the moment) which is of course not S2725QC (mine has DisplayPort 1.4 instead of USB-C), and attached it first to my old MacBook Pro 16" 2019 (Intel with Radeon 5300M 4GB).
Well, it works (up to 120Hz via DisplayPort) but only for a moment - and then monitor can't find active port. Disabling auto-switching doesn't help, LCD Conditioning is not even active on QS. I tried switching both DP and HDMI cables (yes, yes, yes). And of course used both Apple original dongle but also through Anker one (as sometimes the one from Apple won't work).
Then... I remembered ancient scripts of "automated graphics switching" and after disabling it - it works. Unfortunately, until first sleep or attempt to change resolution (or refresh rate) - then it again goes into limbo of trying to find active port (and can't find one). That is also true for both clamshell & open mode of operation. Interestingly enough, fans are more noisy than with two Studio Displays which likely means MacOS can't properly evaluate what's connected over the DP and just runs fans full speed.
Note, MacBook Pro requires external power supply to operate with graphics card switching disabled and this Dell, otherwise it shows screen once for ~15 seconds and disables itself again. Tested both with new 140W Apple power supply and Anker GaN 140W one.
On the other hand - it works flawlessly with Mac Mini M2 Pro connected via Thunderbolt port to DP, haven't tested HDMI. 120Hz, any resolution, HDR, Night Mode, anything you wish for - works. No problems sleeping/waking up. So, I guess, it's great 120Hz monitor if you don't plan to use it with Intel Macs ;P
[Edit: yes, MacBook Pro M1 Pro also doesn't have any problem running the display even without external power supply (on battery) - 4k, 120Hz, HDR, etc - via DP to USB-C/Thunderbolt cable]
Well, it works (up to 120Hz via DisplayPort) but only for a moment - and then monitor can't find active port. Disabling auto-switching doesn't help, LCD Conditioning is not even active on QS. I tried switching both DP and HDMI cables (yes, yes, yes). And of course used both Apple original dongle but also through Anker one (as sometimes the one from Apple won't work).
Then... I remembered ancient scripts of "automated graphics switching" and after disabling it - it works. Unfortunately, until first sleep or attempt to change resolution (or refresh rate) - then it again goes into limbo of trying to find active port (and can't find one). That is also true for both clamshell & open mode of operation. Interestingly enough, fans are more noisy than with two Studio Displays which likely means MacOS can't properly evaluate what's connected over the DP and just runs fans full speed.
Note, MacBook Pro requires external power supply to operate with graphics card switching disabled and this Dell, otherwise it shows screen once for ~15 seconds and disables itself again. Tested both with new 140W Apple power supply and Anker GaN 140W one.
On the other hand - it works flawlessly with Mac Mini M2 Pro connected via Thunderbolt port to DP, haven't tested HDMI. 120Hz, any resolution, HDR, Night Mode, anything you wish for - works. No problems sleeping/waking up. So, I guess, it's great 120Hz monitor if you don't plan to use it with Intel Macs ;P
[Edit: yes, MacBook Pro M1 Pro also doesn't have any problem running the display even without external power supply (on battery) - 4k, 120Hz, HDR, etc - via DP to USB-C/Thunderbolt cable]
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