The mood in the crypto mining world has recently been suffocatingly grim.

Bitcoin’s price is still holding up, but miners are finding each day tighter than the last.

At this critical moment, on April 7, 2026, Bitdeer, the company under Jihan Wu, officially released its latest generation of self-developed mining rigs, the SEALMINER A4 series.

That puts mass production about six months later than the target set in its previous technology roadmap.

Bitdeer says the machine’s wall-plug power efficiency is as low as 9.45 J/TH.

But miners are now struggling through one of the weakest profitability environments in the industry’s history.

If Bitdeer can truly hit that target, it would mark a meaningful step toward lowering electricity costs, the biggest expense for mining farm operators.

The new product lineup includes three models designed for different deployment setups.

A4 Ultra Hydro, the top-end water-cooled model, delivers 886 TH/s of computing power, consumes 8,372.7 W, and reaches 9.45 J/TH, making it the most energy-efficient option.

A4 Pro Hydro, the professional water-cooled model, delivers 680 TH/s of computing power, consumes 7,412 W, and reaches 10.9 J/TH. A4 Pro Air, the air-cooled version, delivers 336 TH/s of computing power, consumes 3,662.4 W, and reaches 10.9 J/TH, making it suitable for smaller mining farms without highly specialized cooling conditions.

The launch comes as Bitcoin miners face sustained margin pressure, with hashprice, a key measure of crypto mining revenue, hovering around $28 to $30 per PH/s per day.

At that level, profitability across the industry has become strained, especially for operators running older, less efficient mining rigs. That is why Bitdeer’s new machines have drawn so much attention.

9.45 J/TH: A Cold Number That Could Mean Survival

First, a definition: energy efficiency, measured in J/TH, is the mining rig’s fuel economy metric. The lower the number, the less electricity it takes to mine the same amount of Bitcoin.

Bitdeer’s newly announced A4 series uses its self-developed SEAL04 chip and claims wall-plug power efficiency as low as 9.45 J/TH.

What does that mean in practice?

Let’s do the math. Many machines in the industry still sit at 15 J/TH or even above 20 J/TH. Even Bitmain’s competing Antminer S23 series is around 9.5 J/TH, while Bitdeer’s 9.45 gives it a slight edge.

When others are forced to shut off power, you can still grit your teeth and keep running. That is the survival logic of this winter.

Do Not Just Look at Crypto Mining: This Is Really a Computing Power Revolution

The A4 series comes in three versions at once, including both liquid cooling and air cooling models.

The most powerful model, the Ultra Hydro, delivers computing power of up to 886 TH/s.

The advantage of liquid cooling is stability: better heat dissipation and lower noise, making it suitable for large-scale machine-room deployments.

But has anyone noticed one detail? Bitdeer has recently been moving closer to AI and high-performance computing, or HPC.

It has built extremely power-efficient mining rigs on its own, yet sold all the Bitcoin it held.

If selling coins was meant to secure desperately needed liquidity in the near term,

then why, when profits from crypto mining and holding Bitcoin have already become razor-thin, is Bitdeer still investing heavily in developing foundational chips such as SEAL04 and launching new mining rigs?

Because developing this kind of high-performance mining rig is, at its core, a way to refine underlying chip capabilities. Bitdeer is using its SEAL04 chip this time.

The original roadmap set a chip-level efficiency target of 5 J/TH, with the chip planned for release in the second quarter of 2025 and mass production and delivery scheduled for the fourth quarter of 2025.

In reality, the schedule slipped to April 2026, about half a year late, with the complete machine reaching wall-plug power efficiency of 9.45 J/TH.

Bitdeer was also sued by investors over delays in mass production, with accusations that it misled them about technology maturity and the timeline. Even so, the A4 series technology it has now released remains in the top tier.

To some extent, today’s mining rig chip technology is also laying the groundwork for tomorrow’s AI computing power.

Jihan Wu’s logic is clear: hold on to the most profitable tools with one hand, and sharpen the sharpest blade with the other.

If crypto mining profits are now paper-thin, then the play is to use extreme efficiency to grind competitors down, while migrating the technology into the more lucrative AI sector.

Who Is Afraid, and Who Is Celebrating?

Miners are genuinely in a difficult position right now.

The industry has a metric called hashprice, which measures how much revenue each unit of computing power can earn per day. It is now around $28 to $30 per PH/s per day, near historic lows.

Many small miners can no longer hold on. They are selling Bitcoin to survive, or leaving the market outright.

Only giants such as Bitdeer are still pouring money into hardware iteration. But they are also using profits to fund AI. Crypto mining has long ceased to be a game for grassroots players; it has become an extreme sport for capital and technology.

Either you have the cheapest electricity, such as Bitdeer’s power stations in Norway and Bhutan, or you have the most power-efficient machines, such as the newly released A4.

If you have neither, you are basically just padding the industry’s numbers.

The release of Bitdeer’s A4 series confirms one fact: in this zero-sum market, mediocrity is suicide.

This is not just a new mining rig. It is a threshold: self-developed chips, extreme energy efficiency, and a global power-station footprint together keep most copycats outside the gate.

When the tide goes out, the people left on the beach are not bargain hunters. They are professional players holding heavy weapons.

In the second half of the computing power race, the winner will be whoever can take one more breath than rivals under extreme conditions.