Tubes (curently used by AMHASH) are rated @ ~1W/GH. So we can asume that AMHASH (5PH) is curently @ 5MW facility. With new gen hardware AM could have ~20PH thats 6.66% of total hashrate. Few months back there were pictures of new datacenter under development with cooperation of RM and some others (can't find it now). So, if it will be another 5MW then AM can have over 10% of total hashrate.