
IREN Is Switching Off the Business That Made $578 Million
The miner booked a $638.8 million impairment retiring rigs to clear halls for AI tenants. Its $4 billion contracted run rate is still $3 billion above what is actually operating.
Independent data on what mining actually costs and returns. Retailers recommend the machines they sell and pools recommend themselves; the figures here apply the same assumptions to every option, and we show you where each number came from.
mempool.space · live
Hashprice
$38.98
per PH/s per day, before costs
Difficulty
127.45 T
67% through this epoch
Network hashrate
955.63 EH/s
three-day average
Next retarget
+5.06%
664 blocks remaining
A rising retarget makes mining harder and reduces revenue per unit of hashrate. Figures are estimates, not a forecast of future returns.
Pick a machine and your electricity rate for an estimate at today's price and difficulty.
Operating profit
$3.98
per day, after power and a 1% pool fee
Break-even electricity
$0.1072
the most you can pay per kWh
Revenue is derived from network difficulty and block reward, not from a provider's advertised return. Every live figure on this page carries its source and the time it was fetched. Profitability changes with difficulty and price, and past figures do not predict future returns.
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| Machine | Hashrate | Power | Efficiency | Revenue / day | Break-even |
|---|---|---|---|---|---|
| Bitmain Antminer S21 XP Hyd | 473 TH/s | 5,676 W | 12.0 W/TH | $18.25 | $0.134 |
| Bitmain Antminer S21 Pro | 234 TH/s | 3,510 W | 15.0 W/TH | $9.03 | $0.1072 |
| MicroBT Whatsminer M60S | 186 TH/s | 3,441 W | 18.5 W/TH | $7.18 | $0.0869 |
| Bitmain Antminer S19k Pro | 120 TH/s | 2,760 W | 23.0 W/TH | $4.63 | $0.0699 |
Revenue assumes a 1% pool fee at current price and difficulty, before electricity. Break-even is the highest rate per kWh at which the machine still covers its power cost. Specifications are manufacturer figures; hardware prices are not included because we do not yet publish a verified retailer feed.
Which pools are actually finding blocks, how healthy those blocks are, and — the part other comparisons skip — which pools publish their fees at all. Several of the largest do not.
Compare mining pools →
The miner booked a $638.8 million impairment retiring rigs to clear halls for AI tenants. Its $4 billion contracted run rate is still $3 billion above what is actually operating.

The BLAKE2b chain locked out every SHA-256 rig in existence when it activated on 1 September. The one venue quoting the coin showed a 131.7 per cent bid-ask spread, and no major exchange has listed it at all.

BitGo picked up roughly 250 institutional client relationships and 30 staff. The seller kept a data centre pipeline it says runs past three gigawatts.

Bitcoin's 25 per cent weekly rally has not fixed the arithmetic that broke the mining industry: cash costs sit near $88,000 a coin and MARA, Riot and CleanSpark are all still trading on negative earnings.

The rename ends the fund's pure-miner definition and adds hyperscale data centres, AI semiconductors, power infrastructure, and quantum computing to its 80% allocation floor.

The Nasdaq-listed miner's managed hashrate more than halved year on year to 15.3 EH/s, and FUFU shares dropped 17% before the open on Monday.
How the figures on this page are produced, and what moves them.