Thanks!
$ lspci |grep VGA
01:00.0 VGA compatible controller: NVIDIA Corporation Device 1b80 (rev a1)
02:00.0 VGA compatible controller: NVIDIA Corporation Device 1b80 (rev a1)
Added the card to Xorg.conf like this:
Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BusID "PCI:1:0:0"
EndSection
Section "Device"
Identifier "Device1"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BusID "PCI:2:0:0"
EndSection
~$ ls -l /dev/nvidia*
crw-rw-rw- 1 root root 195, 0 Nov 11 01:51 /dev/nvidia0
crw-rw-rw- 1 root root 195, 1 Nov 11 01:51 /dev/nvidia1
crw-rw-rw- 1 root root 195, 255 Nov 11 01:51 /dev/nvidiactl
crw-rw-rw- 1 root root 195, 254 Nov 11 01:51 /dev/nvidia-modeset
crw-rw-rw- 1 root root 243, 0 Nov 11 01:51 /dev/nvidia-uvm
crw-rw-rw- 1 root root 243, 1 Nov 11 01:51 /dev/nvidia-uvm-tools
Finally, the magic command
$ nvidia-smi -a
Unable to determine the device handle for GPU 0000:02:00.0: Unable to communicate with GPU because it is insufficiently powered.
This may be because not all required external power cables are
attached, or the attached cables are not seated properly.
So, Confirmed, the MSI card is a powerhungry beast - so excited to see how it performs vs the gigabyte one once i get the power plug.