Please update with how you get on - and which exact card you have
Ok, I wasn't expecting an update so soon, but here it is since this was actually really easy.
1. Here is the exact card I ordered from Amazon:
MSI R5604TPC RX 560 4GT LP OC Graphic Card
(Special thanks to
@emericuh for the heads up that Amazon sold this exact card)
2. Card comes like this with the standard bracket installed, but an optional low profile bracket
is included:
3. Since I'm installing this into an HP 8300 Elite Small Form Factor, I needed the low profile bracket and swapped it out.
I then installed the card in this black PCI slot (highlighted in yellow):
4. Video card is a fatty, and takes up two slots. It looks like this from above:
5. I connected the DisplayPort cable from the new video card DisplayPort slot to my monitor. Here's the back view:
6. Last night, I upgraded my machine to the latest macOS High Sierra version (10.13.4 as of this writing), so I wanted to see if this was really just plug-and-play with High Sierra out of the box. So I just plugged it in and rebooted...and crossed my fingers. *gulp*
7. I then disconnected and reconnected the DisplayPort cable and voila!
There was the macOS desktop running perfectly via the DisplayPort on the new video card. It worked! Right out of the box. No software tweaks to anything.
8. Big note about this card. When installed in that slot, the ports for the DisplayPort and HDMI are physically too close to the metal vertical pillar on the SFF case. I tried adjusting the bracket a bit, but it was still physically too close, and this initially gave me intermittent video and I thought there was an issue related to the VGA/Integrated Graphics. Nope. It was literally not a secure connection that's all. Here's what the card looks like when installed and how it's too close to the metal pillar of the case:
And here's when I just cut out that metal piece, and ahhhhhh it let the DisplayPort cable sit in for a totally solid connection now:
CONCLUSION: This card works perfectly right out of the box with high sierra! Boom!
Meanwhile, here are the new results:
That OpenCL score skyrocketed obviously via geek bench. Nice!
I actually don't even have a 4k monitor yet, but this was the test to ensure that it would be worth getting one. I definitely think it will be for a nice photo/video editing station. And I'm keeping my eye out for a 4k display.