You need 62.5 chips to get 1TH. On 256GH/s boards (16 chips@16GH/s), that's 4 boards for 1.024TH.
He probably meant you need 4000 boards for 1
PH...
Yeah, meant one PH, obviously.
If there's 5-6PH online in November and Labcoin effectively gets 50TH online, that's ~0.9% of the total network hashrate, earning around
BTC1000
per month.