Nik does appear to be right, the 64 bit Linux port is for X64.

I'm not a big Chromium fan, but I'm going to have to look into it for PPC.
I've been spending more time exploring Ubuntu, Mate, Debian, etc.

They are a least reasonably up to date (as opposed to OSX).
And the recent advances in graphics are encouraging.

Addendum - Quote from What software is available for PowerPC? "Notable absentees are: Chrome/Chromium, Adobe Flash, Wine (however Qemu can be used, see below), Skype, ndiswrapper, proprietary video drivers and Dropbox."

[ Edited by Jim 17.06.2017 - 13:36 ]