MacPro 2017 with double AMD Radeon HD FirePro D700 questions

Question

Level 1

16 points

MacPro 2017 with double AMD Radeon HD FirePro D700 questions

Hi to all,

I'm here on a quite new MacPro 2017 and I noticed that, even if I have 2 displays, just one of the two cards hands all the work... I've tried different connection like “display port <-> display port / display port to DVI adapter <-> DVI” and “display port <-> display port / HDMI to DVI adapter <-> DVI” but nothing changed

Is it right or is there a way to set one card to handle the first display and one card to handle the second display?

Why is the card on the second slot to handle all and not the card on the first slot? 🤔

I really can't understand...

Posted on Dec 12, 2018 1:14 AM

Reply

Answer 1

Best reply

Grant Bennet-Alder

Level 10

127,429 points

Dec 12, 2018 9:01 AM in response to fixthefish

By design, the interface for all six displays are wired onto one card.

That card handles all the interruptions and screen refreshes to keep those displays refreshed properly. It is not at all taxed doing all six displays. You would get no advantage from moving half the displays to the other card.

That leaves the second card completely free to handle GPU computation without interruption. The interruption of computation on a graphics card by screen refresh duties sends it back to the begginning of that computation -- so this is a distinct advantage of this setup. GPU computation is much faster this way.

Reply