I have not been really following up on the nMP news or this forum (but my rudimentary search for 5k on this forum does not reveal whether this has been discussed) - so starting this thread. It looks like now the nMP supports 5k monitors: http://www.apple.com/mac-pro/specs/ Under display support it says connect up to three 5k monitors or 6 Thunderbolt displays. So I assume three 5k monitors means it will take up 2 Thunderbolt ports for a 5k monitor. I have the stock 6 core nMP ($4k - got last Thanksgiving for $3500 at B&H) - since there has been no nMP update I assume the information on Apple's website is valid for my machine as well. I was wondering if it would work with one of these 5k monitors (Dell UP2715k, HP Z27q ): http://www.bhphotovideo.com/c/search?atclk=5K/4K_4K&ci=25766&N=3878805756+3856218656 Anyone used them with nMP? No hurry on my side & will wait for the prices to come down (may be even next year) or 32 inch 5k monitors - as I already have a 4k monitor. However those extra pixels on the monitor sure can come handy for photo editing.