to say these response are BS is an understatement
Ryzen 2200/2400 ave available pci-e 3.0 x8 link speed available that can be used
for external graphics (if one so chooses) it is not easy to do so by all means, but claiming it is not possible is not at all truthful.
AMD made sure there was a limit so you could basically only pair up with 1 GPU
so potential miners would not even bother using as such.
Ryzen 2200/2400g with a x8 link speed is basically enough bandwidth leftover to feed any current single gpu from AMD or Nvidia up to about Titan V or possibly some dual gpu on 1 card configurations.....they really should have given the ability to disable the Vega graphics core to shift between the iGP and dGPU as needed, maybe this will come with BIOS updates, however, like I said and I have been spending quite a few hours researching this for my own information, you ABSOLUTELY can pair up Ryzen 2200/2400G with a discrete graphics card.
there is a limit of 1 gpu however, so if your plan was to use it for mining, likely the cost would just not be worth the attempt, better off to get something like a Ryzen 1200 and a full size x370 or something like that (more pci-e slots)
anyways ^.^
I did some research, look like NO. You'd have to disable iGPU in order to use dGPU. Also, the Ryzen APUs only have 8 PCIE lanes, eg. PCIE3 lanes split x8/x0 instead of x8/x8 (see detail pane of spec). You'd need adapter to fit extra dGPU.
– guest-vm – 2018-04-05T19:44:20.8771I know that for Intel the integrated graphics is still available (and people commonly mistake which port to plug monitors into) so I would expect AMD's Ryzen to behave similarly. If it is available, it will still be software-dependent (ex: I know that Linux doesn't like using integrated and discrete graphics simultaneously). – Aaron Franke – 2018-04-06T06:42:37.593
It won't be "disabled" but what do you want it to be available for? – HackSlash – 2018-04-06T20:08:25.130
@HackSlash Do you have any proof for that? I searched in various hardware forums and there is no report of both iGPU & dGPU enabled for Ryzen APUs. CMIIW. – guest-vm – 2018-04-07T13:02:16.393
1I want to use both the integrated GPU and the discrete GPU for compute via OpenCL – Thomas Browne – 2018-04-09T13:23:19.957
@guest I've found that you can't crossfire with them but nothing about it being disabled. The only evidence that suggests it is available is that DX12 multi-GPU is supposed to be able to access it. I guess someone has to test it. – HackSlash – 2018-04-09T15:36:14.377