<p>ASICs use many threads to compute SHA256 hash functions in parallel.
At the time of this post, Antminer S19 can compute 110TH/s.
How many SHA256 hash functions per thread can the best SHA256 ASIC compute?</p>
<p>I would like to know the maximum number of iterative hashes per second, i.e.,
SHA256^N(s) = SHA256(SHA256(....(SHA256(s)))) that can be computed on the best hardware.</p>

CC BY-SA 4.0
2021-10-08T22:03:54.663Z
There's no "threads" in an ASIC, and bitcoin miners don't compute SHA256 at all, they do partial fragments of the end of one, and the start of another, never the whole thing.
Claris
CC BY-SA 4.0
2021-10-09T00:03:29.277Z
Also Bitcoin mining does not involve iterated hashing, so ASICs are almost certainly incapable of that.
Pieter Wuille
<hashpower><asic><sha256><antminer>
How many SHA256 hashes can a single thread compute?
satya
# How many SHA256 hashes can a single thread compute?

(Asked by: username_0 on 2021-10-08)

ASICs use many threads to compute SHA256 hash functions in parallel.
At the time of this post, Antminer S19 can compute 110TH/s.
How many SHA256 hash functions per thread can the best SHA256 ASIC compute?

I would like to know the maximum number of iterative hashes per second, i.e.,
SHA256^N(s) = SHA256(SHA256(....(SHA256(s)))) that can be computed on the best hardware.

**Tags:** hashpower, asic, sha256, antminer

> **Comments:**
> **username_1**: There's no "threads" in an ASIC, and bitcoin miners don't compute SHA256 at all, they do partial fragments of the end of one, and the start of another, never the whole thing.  
> **username_2**: Also Bitcoin mining does not involve iterated hashing, so ASICs are almost certainly incapable of that.  

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## 0 answers

