OK, I've bookmarked the Seasonic in case
I need either of the PSU in the future.

Thankfully, we didn't have to buy one this
time. However I still want to get a few more
external HD's. One as a dedicated spare HD for
the 780, another as a backup for the 8500 spare
HD's and another for a backup for the external
backup drive.

https://www.newegg.com/Product/Produ...82E16822148834


Many thanks,
Robert