Bitmain vs MicroBT — The Two Giants of ASIC Manufacturing

The ASIC duopoly that quietly secures Bitcoin

Every block Bitcoin has mined since roughly 2018 was found on silicon manufactured by one of two Chinese companies. Independent industry trackers consistently put Bitmain and MicroBT at a combined 90%+ share of SHA-256 ASIC shipments, with the rest split between Canaan (Avalon), Innosilicon, and a handful of smaller players. No other manufacturer has crossed 10% share in the modern era.

A true duopoly is rare in hardware — and the reasons it exists here are structural. Designing a leading-edge Bitcoin ASIC requires hundreds of millions of dollars in R&D, direct wafer allocations from TSMC or Samsung on 5nm and below process nodes, and a sales plus after-market support network spanning the globe. Nobody without that trio can ship a competitive miner, and nobody has assembled it quickly.

Bitmain — the original Antminer company

Bitmain was founded in 2013 in Beijing by Jihan Wu and Micree Zhan. Wu handled strategy and the crypto-community side of the business; Zhan led the chip design team. Their first real breakthrough was the Antminer S5 (2014–2015), but it was the S9, launched in late 2016, that turned Bitmain into a household name in mining. The S9 dominated the 2017 bull run and remained the industry benchmark for almost three years.

The company pursued an IPO on the Hong Kong Stock Exchange in 2018, filing a prospectus that revealed staggering revenue numbers — and then let the application lapse in 2019 amid the crypto winter, the China regulatory environment, and internal tensions between the two co-founders. Wu and Zhan later separated operational control and Bitmain consolidated under Zhan's leadership.

Bitmain today is the larger of the two companies by revenue and unit shipments, and its distribution footprint is unmatched — if you buy a single used miner on a secondary market anywhere in the world, statistically it's an Antminer. That scale is Bitmain's core commercial moat. The engineering reputation is performance-first: Antminer models tend to push peak hashrate numbers, and Bitmain has historically been faster to release a headline-grabbing new flagship each cycle.

MicroBT — the efficiency-focused challenger

MicroBT was founded in 2016 in Shenzhen by Yang Zuoxing, who had previously been a chip architect at Bitmain and was directly involved in the design of some of the early Antminer generations. Yang left to build what became the WhatsMiner M-series, and within a few years MicroBT had grown from startup to Bitmain's only serious peer. By 2019–2020 the WhatsMiner M20S and M30S had pulled the company into roughly equal standing on efficiency.

MicroBT has stayed privately held and has not pursued a public listing. Its corporate profile is more understated than Bitmain's — no IPO drama, no public founder disputes — and the company has cultivated a reputation among large operators for build quality and in-field reliability. WhatsMiner control boards are widely considered simpler to diagnose and repair than Antminer boards, which matters when you are running thousands of units.

A quirky but telling detail: the two companies have largely swapped foundry partners over time. Bitmain's early Antminers leaned on TSMC, then shifted significant volume to Samsung; MicroBT started out more heavily on Samsung and moved more recent high-end WhatsMiner parts to TSMC. The switching reflects foundry capacity and process-node economics — not a lasting technical loyalty from either side.

The efficiency race: ten years of back-and-forth

The most interesting part of the Bitmain vs MicroBT story is that neither company has held the efficiency crown for long. Leadership has swapped roughly every major generation, and no era has been decisive enough to shut the other side out of the market.

The pattern is clear: no manufacturer stays ahead for more than one generation. Any operator who bet the entire fleet on a single brand in 2018 would have faced awkward upgrade decisions by 2020. The efficiency race is genuinely competitive, which is good news for everyone downstream — including cloud mining users.

Reliability, warranty, and what operators actually see

Both companies offer a standard 12-month manufacturer warranty on new units, with typical caveats (no water damage, no firmware tampering, purchase from authorized channels). On paper they are close to identical. Where they differ is in how the units behave after the warranty window — and that's where operator experience matters more than spec sheets.

That's why serious operators — ourselves included — run both brands in the same facility. Bitmain gives us supply-chain depth and the fastest replacement pipeline when something fails at scale. MicroBT gives us vendor-risk diversification and simpler bench-level repairs. Neither choice is strictly better; they hedge each other.

What this means if you rent hashrate on NoxHash

When you own a miner, picking a manufacturer is a significant decision — it determines your warranty pipeline, your spare-parts strategy, and your resale options. When you rent hashrate from a cloud mining operator, that decision is made for you, and it is made at fleet level, not per-user.

NoxHash's production fleet is deliberately mixed. Our Kazakhstan data center runs Antminer S21 Pro (15 J/TH), Antminer S21 XP Hyd (12 J/TH), WhatsMiner M60S (18.5 J/TH), and WhatsMiner M66S (17 J/TH) side by side. When you rent a Basic, Standard, Pro, or Enterprise plan, the hashrate you buy is backed by whichever units are currently optimal — not by a single brand that happens to be in fashion this quarter.

The practical benefits: fewer fleet-wide failure modes (a firmware bug affecting one manufacturer doesn't take down 100% of production), better sourcing leverage (we can negotiate across both vendors when ordering new generations), and smoother upgrade cycles (whichever company ships the next efficiency leap, we can buy it without re-tooling the whole facility).

Quick takeaways for buyers and renters

Frequently asked questions