What is hashrate
Hashrate is how many SHA-256 attempts a machine, or the whole network, makes each second. It counts guesses. It does not count transactions, and the number by itself does not say how much bitcoin those guesses will return.
What a terahash counts
The basic unit is one hash per second. Each step up is a thousand times larger. One TH/s is one trillion SHA-256 attempts in one second. One PH/s is a thousand TH/s. One EH/s is a thousand PH/s. A single modern ASIC is quoted in terahashes. The Bitcoin network is quoted in exahashes, because that figure is every machine hashing at once. Your number is the slice of those attempts on your side.
Nobody walks the farms with a meter. A published network hashrate is an estimate, worked out from how fast blocks have been found and from the difficulty in force at the time. The attempts themselves are the race in Bitcoin mining, aimed at adding a Bitcoin block. They count only while the machine is hashing.
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A larger share of the work
More hashrate is a larger share of the work. Rent twice the TH and you supply about twice the attempts, so your share of what the pool mines is about twice as large while that hashrate is hashing. The network still adds one block at a time. Mining difficulty moves so those blocks stay near ten minutes, which means a busier network makes each terahash a smaller fraction of the whole. A Bitcoin halving changes how much new bitcoin a block carries. Neither one turns a TH figure into a fixed amount of bitcoin.
The number on the dashboard
You rent a number of TH. On the dashboard that figure is TH, the same count a spec sheet writes as TH/s. The attempts run on SHA-256 ASIC miners, and the machines stay at the farm. Hosted hashrate and buying a miner sets that rental next to owning a machine.
A mining pool combines your TH with the rest of the farm and splits a found block by the work each side submitted. The electricity those attempts use is taken out of the bitcoin. That cost is Bitcoin mining and electricity. Bitcoin mining rewards and payouts is where the day after that deduction is written down. Free Testing is a way to see that day before you buy.
Frequently asked questions
Terahashes per second. One TH/s is one trillion SHA-256 attempts in one second. On the dashboard the same count is written as TH.
No. It is estimated from how quickly blocks are found and from the difficulty in force at the time.
It means a larger share of the work. The bitcoin from that share still moves with difficulty, with fees, and with the halving.
Your TH is the attempts on your side. The network hashrate is every machine hashing at once, usually quoted in exahashes.
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The latest Bitcoin miners
The Bitmain Antminer S23 XP Hyd is a hydro-cooled Bitcoin miner delivering 600 TH/s at an efficiency of 8.9 W/TH.
The Bitdeer Sealminer A4 Ultra Hydro is a hydro-cooled Bitcoin miner delivering 886 TH/s at an efficiency of 9.45 W/TH.
The Bitmain Antminer S23 Hyd 3U is a hydro-cooled Bitcoin miner delivering 1160 TH/s at an efficiency of 9.5 W/TH.
The Bitmain Antminer S23 Hyd is a hydro-cooled Bitcoin miner delivering 580 TH/s at an efficiency of 9.5 W/TH.
The Bitmain Antminer S23e Hyd 2U is a hydro-cooled Bitcoin miner delivering 865 TH/s at an efficiency of 10 W/TH.
The Bitdeer Sealminer A4 Pro Hydro is a hydro-cooled Bitcoin miner delivering 680 TH/s at an efficiency of 10.9 W/TH.
The Bitdeer Sealminer A4 Pro Air is an air-cooled Bitcoin miner delivering 336 TH/s at an efficiency of 10.9 W/TH.
The Bitmain Antminer S23 is an air-cooled Bitcoin miner delivering 318 TH/s at an efficiency of 11 W/TH.
The Bitmain Antminer S21 XP+ Hyd is a hydro-cooled Bitcoin miner delivering 500 TH/s at an efficiency of 12 W/TH.
The Bitmain Antminer S21j XP Hyd is a hydro-cooled Bitcoin miner delivering 495 TH/s at an efficiency of 12 W/TH.