Your comparing a over clocked product to a stock one.
16 Chip biburner furry stock is 16*2.7 ~44ghash 925EUR= more than 925 when you account for exchange rate. (USD>EUR)
8 chip barntech stock is 8*2.7 ~ 21.6 for 425USD
Right from the site:
"Each board will have a performance of 40 to 80 GH/s (best demonstrated 64 Ghash/s). Tests of a single chip have already given a result of 4 GH/s with 4,5 watt of powerconsumption."
SO worse power consuption, and equal performance to maybe better.
(exchange rate EUR/USD = 1.3355)
I care about what GH I get for my $
933$ for 64 GH Bitburner Fury early October
1275$ for 64 GH Drillbit late October/begin November
They have also a hashrate protection: If 64 GH is not achieved a discount of 133$ (100) is given...