I talked to the varispin guy by calling the contact number listed on the website. He claims the chips are coming from the same factory that makes bitmain chips.
<snip>
Your contact still did not answer
whose chips are used. Their own design? Ones bought from BitFury or Inno or (shudder) ebang or others?
The website says they use Samsung 10nm chips. For a start, Bitmain uses TSMC as their foundry - not Samsung. Either way, is irrelevant as the chip design itself - not the foundry - is what matters. Chip design is not part of what a foundry does, it is up to the customer to provide the chip layouts. Now yessss , foundries primarily only produce wafers full of bare chips that then need to be singulated and packaged into usable chips. If per-chip binning (performance testing) is done the packaging house would be the best place to do it. . If your contact is referring to using the same packaging house that BM uses -- I'll buy that but the chips are still Samsung.
The site mentions "assembly in same Tier-1 facility" as Bitmain uses. Sort of irrelevant, yes the plant is used to dealing with making power-dense and thermal-dense hash boards but once again it is the customer that provides the designs used.
Then there is that thermal coating... Sure, looks nice and also probably dampens sound a bit as well but - radiated heat is a stupid thing to address as that is a tiny fraction of the total heat load produced by a miner because the vast majority of the heat is carried away by the airflow through the miner. Insulate the casing and that just means the air has to carry more of the heat.
