Anyone using dual 4K without eGPU?

iandk

macrumors regular
Original poster
Aug 10, 2019
103
46
Hi,

I was hoping, that the new Mac Mini would feature a new CPU/ GPU but unfortunately that's not the case.

Nevertheless I'm about to buy one, but I have no idea if a Mini (i5/ 16GB RAM) would be capable of running my two 27" 4K screens without stutter.
I'm not really doing intensive stuff, mostly web developement/ coding and some productive work.

I bet it depends on the scaling factor, therefore I'd appreciate any input on configurations you are running (with 2K screens) without a eGPU.


Thank you!
 

joevt

macrumors 6502a
Jun 21, 2012
946
459
The Mac mini can connect three 4K displays. Connect two to one or two Thunderbolt 3 ports. Connect a third to the HDMI 2.0 port. An HDMI display running at 4K60 might use an inferior YCbCr 4:2:2 mode. You can make an override to force RGB 8 bpc color if that is a problem.
 
  • Like
Reactions: sergioarista

djc6

macrumors 6502a
Aug 11, 2007
606
141
Cleveland, OH
Yes you can run dual 4K without GPU - here is a post on my setup:


NOTE: I don't do ANY gaming on mac mini - what my nintendo switch is for :)
 
  • Like
Reactions: iandk

iandk

macrumors regular
Original poster
Aug 10, 2019
103
46
Yes you can run dual 4K without GPU - here is a post on my setup:


NOTE: I don't do ANY gaming on mac mini - what my nintendo switch is for :)
Awesome! Which scaling mode are you running?
 

gdbleb

macrumors member
Jul 16, 2008
31
7
NJ
I run 2 Dell U2718Q 27" displays both at 3840 x 2160 on my 2018 mini (3.2 GHz 6-core i7). Both connected via Thunderbolt->DisplayPort cables. I recall this was preferable to HDMI-HDMI in initial setup testing.
 

iandk

macrumors regular
Original poster
Aug 10, 2019
103
46
I run 2 Dell U2718Q 27" displays both at 3840 x 2160 on my 2018 mini (3.2 GHz 6-core i7). Both connected via Thunderbolt->DisplayPort cables. I recall this was preferable to HDMI-HDMI in initial setup testing.
Is it running fine, without lags?
 

Nütztjanix

macrumors regular
Jul 31, 2019
139
121
Germany
I'm using two LG 31MU97Z-B on my 2018 Mini without eGPU.

Both displays configured to 4096x2160 at 60Hz and 10bit colour (macOS calls this 30bit).
Connected via USB-C to DisplayPort cables.
 

AE_stc

macrumors newbie
Feb 25, 2020
23
7
I run a 4k tv via hdmi
And a 1440p monitor via usb-c

Both work perfect. Fast and lag free. Even before I put the 32gb of ram in I used just the tv alone and it worked good
 

suisse

macrumors newbie
Apr 23, 2010
19
0
funny.... on my MBP 13" 2018 with a 32" 4k it's lagging and it's almost unusable with scaling (3008 x 1692)
 

iandk

macrumors regular
Original poster
Aug 10, 2019
103
46
Just got the mini.
Seems to run pretty fine with my 4K screens.
Some occasional stutter when switching desktops or moving safari, but overall pretty good.

Will report back once I used it a bit more.
 
  • Like
Reactions: suisse and AE_stc

iandk

macrumors regular
Original poster
Aug 10, 2019
103
46
Runs pretty good overall. Except some lag/ stutter animations when playing a video fullscreen on one screen.

@suisse
Two screens with this configuration:

1585254934045.png
 

gusping

macrumors 6502a
Mar 12, 2012
625
148
London, UK
Currently running two 4k monitors, one with scaling (looks like 1440p), the other without scaling. i7/16GB ram. Runs like a champ. Not doing any crazy hard stuff though...
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.