- Will they do it, though? The issue isn't the number of outputs available, but some GPU, driver, or software limitation - and the Matrox units still use the machine's own GPU.
We've got two 2012 Mac Minis being used for rendering work and occasional office production work with 3 1080p displays and the set up is perfect for that type of work. It's not retina-quality, but it's suitable.
Also, we're using Accell cables with one Mini and Eizo cables with the second Mini - both cables serve to convey proper EDID info between the displays and Macs/PCs they're connected to (many of our display setups (including mine at home) are connected to two computers so that one can render/crunch numbers while the other computer can be used for other tasks. Most of the off-brand and branded display cables are junk IMHO. Also, IMHO getting a Mac and a display "talking" properly is a key component to using eGPUs and devices like the Matrox. Cheers.
[doublepost=1477584877][/doublepost]
You bought a machine that stated very clearly in the specs that it would run 2 external screens and now you are complaining when it won't do three screens??? Surely you realise that you bought the wrong machine for the job...
To be fair, you're making a valid, really good point here.
OTOH, I was realistic when I bought my personal late-2013 15" rMBP and was happy with it. Then 10.9.3 came out and Apple enabled 4k @ 60Hz and I was happier. Then 10.10.3 came out and Apple enabled 4k @ 60Hz on two displays and I was even happier. But, new stuff is being announced in about an hour. I'm waiting for Apple to issue a firmware update that will turn my 15" rMBP into a 17" rMBP...
Cheers.