Bitmain has just announced a new mining machine, the antminer x3, that is designed to mine cryptonight algorithm cryptocurrencies, such as Monero. It is extremely efficient and profitable. A vega 56 video card has on average 1850 h/s at 190wh power usage. The x3 has 220000 h/s (118x stronger) at 550w power usage. It is then 41.08x more efficient.
As can be seen, this is a money machine. Costing $12,000 to have it shipped 15-31 may would net you at today's difficult over $5.3k per month.
Enter the most important part. Seems good to be true, right? It is. This machine is being released to the public because information that asics were being developed/already used leaked to monero developers, and naturally they worked on implementing a fix for that, in order to keep Monero's anti-asic and centralization nature. This month along with other things, code will be pushed to fix this issue and make asics not functional for monero. Every 6 month network upgrade will also have small tweaks in the algorithm to ensure no asic is ever developed or at least profitable to pull.
Bitmain is only selling these machines because they knew monero was adding this feature on the upcoming fork. They then rushed to sell the machines they were using to people who don't know about this.
On their site;
2. There are financial risks associated with mining cryptocurrencies. These risks can be related to changes in exchange rate of the cryptocurrency or to changes in the algorithm that is used to mine the cryptocurrency. Please deliberate well before making a purchase because we will not accept any requests for refund for orders of this batch.
In other words: if a network upgrade for cryptonight coins ever happen (it will happen), we can't be responsible for this. You're on your own and don't dare requesting a refund, we never issue these (quick off-topic: I personally know this very well because bitmain didn't refund me on my s7s even when I didn't receive the miners)
The shipping date is 2 months after the fork. These machines will be completely and absolutely useless. The biggest cryptonight coin will already have forked. Other cryptonight coins already signaled they will also push fix to this issue. Even if one or two CN coins don't implement anti-asic stance, you'll be left with shitcoins to mine. Imagine buying SHA256 asic for bitcoin only to have it available to mine peercoin only by the time you receive them.
tl,dr: Don't buy bitmain's x3. They asic mined monero and now that this will not be possible anymore they want to dump their machines on you.
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