I bought the cheapest active adaptors I could find and although they were fine for DVI they wouldn’t display HDMI in the right colour space in OS-X (although Windows was fine).Īlso another note that all miniDP->VGA adaptors are active as they need to convert from a digital to analogue signal.
Now from my experience (albeit by testing only a couple of options) not all active miniDP adaptors are the same either. A quick eBay search shows the price difference.
Active vs Passive Mini Displayport Adaptorsįirst off – Not all adaptors are created the same and if you want more than 2 outputs from a MacPro you’ll need ACTIVE adaptors. I’m also yet to get Windows to work with this port at all. Built in HDMI Outīased on OS-X System Info this port is considered a Passive connection and so is considered 1 of your 2 passive connections available to use – want 2 outputs and an HDMI out? Well you’ll need an active adaptor to get them all to work. This could all change with the release of 10.9.3 which has already show come quite bit improvements with both 60Hz and HiDpi support coming to both the MacPro and 2013 rMBP. I did load a 7680×2160 clip into Millumin and noticed some stutter but it could be to do with the outputs sub 50Hz refresh rate as the both the CPU and RAM reported low usage numbers. So far I can confirm that the MacPro can handle more than just 2x 4k outputs (at 30hz) – in my case I had both outputs running at 3840×2160 and a 3rd monitor running at 1920×1080. I unfortunately don’t have a 4k monitor to test the maximum output on let alone two but we do have a couple of bits of gear that can take some form of a 4k feed and at least indicate it’s working – in my case a Blackmagic ATEM 1M/E 4k and a Datapath X4 image wall processor. Apples promotional material mention support for up to 6x 1080 displays or 2x 4k Monitors.
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