Alright, so this isn't over
Regarding GPU choice:
Okay, so do I understand this correctly:
I buy a GeForce 10xx card,
not a Quadro.
I plug my two cheap GUI-monitors into the GeForce but the grading monitor into the DeckLink Mini Monitor.
And somehow (I really don't understand how), the Mini Monitor interfaces with the GeForce over PCIe and gives me 10bit output?
Is that how the Mini Monitor works?
Regarding Monitor choice:
Greatly appreciate the input on monitor choice, but you don't know the full story yet.
This monitor came recommended by a blog post from colorist David Torcivia (davidtorcivia DOT com/spring-2016-entry-level-monitors-roundup/)(You'll have to assemble that URL yourself, I'm not allowed to post URLs), aimed at filmmakers who want to improve their color grading but not become a colorist.
I chose it because besides filmmaking, I also do photography, webdesign and printdesign and the 99% Adobe RGB as well as CMYK color would come in handy for that.
However, it also does Rec.709, even out of the box:
tomshardware DOT com/reviews/benq-pg2401pt-24-inch-monitor,3848-3.html
According to David Torcivia, it also sports hardware calibration that can interface directly with X-Rite calibration tools.
And as far as I understand it, it is a true 10bit panel, whereas the Dell Ultra Sharp is only 8 bit with FRC dithering (according to the review).
Now, I'm really new to all this, but for the reasons above, it currently seems to me that the BenQ would be the better choice. Or are there other features it's missing for video work that the Dell has? I know the BenQ doesn't quite do DCI-P3, but if I ever have to grade in that space, I'd get a TV that suppors it and add it as a forth monitor.