Top ASICs for the Halving Period?

Bitmain has been dominating the ASIC scene for a long time, but I’ve noticed that MicroBT's WhatsMiner series and Iceriver’s altcoin miners are really starting to make a name for themselves. After the halving, how much profit you make will hinge on power efficiency, and things are definitely heating up. What do you think will be the best choice for 2025?

bitmain s21xp

No matter amount of Bitcoin mining reward, the short answer is always ASIC with best efficiency in terms of J/TH and good price/hashrate ratio.

This is just me but for 2025, the best mining machine depends on efficiency. S21 Pro for bitcoin, M60S is a good alternative. L9 for altcoins. I chose based on electricity costs.

I don’t think it is as simple as this. Customers need to have a decent customer service/support if something goes wrong with the hardware and I don’t think there are many reputable brands around that provide it. Canaan used to be quite big I don’t know if they are still in business but Bitmain is pretty much the golden standard of crypto miners. So instead of choosing a brand you never heard of before, OP you should go with a miner from Bitmain’s lineup imo. (Unless you are feeling adventurous)

You're right, that's why i did mention "short answer". For serious miner, there are so many factors that could be mentioned such as warranty and spare part availability. Although FWIW https://www.asicminervalue.com/efficiency/sha-256 currently shows only some AntMiner S21 variants have very good efficiency.

S21 and L9 is one of my choices this 2025, I'm planning to add a few machines this year. I don't appreciate the short answer ABCbits gave, but anyway. Yeah! I think Bitmain's machines are still on my top choices. I don't want to be adventurous, I don't want to waste another dollar for a machine that will gave me profit for a short period of time KS0 Ultra. Such a waste lol!

The cost of electricity is very important to you. If you look at the reports of large American companies These are the calculations of BitRiver experts Riot Platforms 0,031$ IREN 0,031$ MARA 0,04$-0,042$ Core Scientific 0,044$ https://1prime.ru/20250218/mayning-855044195.html If you have $0.2 per kilowatt, then any ASIC will be unprofitable for you in such a situation

Canaan is still very much active, they have released few new BTC home miners in the past few weeks, one is named Q and others, they are quit cool and very efficient but I just like buying miners when the market is so terrible. Difficulty will be lower because some miners will find it hard to run their hardware bacuse of grid power bills and also the ASIC miners will be a lot cheaper, I still think the best time to invest in a ASIC miner is in a blood market. Those who set up miners when BTC was at $15,000 years back did very well already, cheaper hardware and more BTC that ended up having better value. This is my own way.

It's a different time for mining now. Large corporations are buying lucrative contracts for electricity or building their own energy plants. More than 90% of mining costs will be electricity costs. Large companies are also buying ASICs at big discounts. Small miners have no chance in this business. It's easier for them to buy bitcoins than to mine them.

I think it's the way developers want things to be because they can just create a new Asic miner that takes less power or retain the high power with massive hashrate, but all this things are calculation based. Mining will be easier if you have money to set up green energy and be willing to wait for years to get all the money back, I accept that mining isn't for the small boys anymore, they are better just buy some BTC and hold for few years. If I have 10k right now I think it's best to buy Bitcoin, rather than buying two or more Asic miners, electricity consumption is killing, it takes good calculation first before proceeding to order for Asic miners.

It can't really compete with Antminer S21 series though, which have better J/TH efficiency. And depending on where/how you buy, Avalon Q's $/TH may lose to S21 series. Although it's good to see they're not giving up to compete with Bitmain. As reminder, asicprofit dot com is a probable scam mining calculator website.

MicroBT builds the most robust mining gear. Bitmain is slightly above mediocre, and Canaan falls below that. The only area where Bitmain beats MicroBT is in efficiency and availability -- thanks to their massive production volume, you'll almost always find that the same generation of Antminer is slightly more efficient than a Whatsminer. Aside from that, MicroBT outperforms Bitmain in every other aspect, including customer service. The thing about Antminers is that they're just too popular. Most people have a herd mentality- they don’t want to try "new" things. But the moment they get their hands on Whatsminers and start comparing reliability and build quality, they’re unlikely to go back to Antminers again. In case you didn't know, it’s not uncommon to see a high DOA (dead on arrival) rate with brand-new Antminers. I know people who've reported up to 8% DOA on batches of 1,000+ S19 units. Compare that to 0–1% DOA for the same quantity of Whatsminer M30+ units. Want to know what’s even more surprising? Nearly 0% of Whatsminers fail within the first year, while Bitmain has almost double the DOA rate. To their credit, Bitmain has improved since the 17 serie -- when failure rates reached up to 40% within the first 6 months—but still, nothing comes close to Whatsminers in terms of durability. Speaking from personal experience -- having owned, sold, and managed thousands of both brand --I can say without a shadow of a doubt that the numbers most people report are probably conservative. Antminers are actually worse. 😉 I've had hundreds of Whatsminers running for over two years with nearly zero failures at the hashboard level. Yes, the fans die too often (since only two are doing all the work), but trust me: I had an M21s running with just one fan in a terrible environment, and it didn't even reboot, it kept hashing like a champ. Meanwhile, I've had to collect heatsinks from S17s after blasting them with a $10 blower. 😅 That said, Whatsminers do have two notable drawbacks (and no, fan replacement isn't one of them since they're cheap, easy to swap, and don't fail much sooner than Antminer fans). The first issue is the PSU design. The C19 connector is overkill. Most miners don't have the infrastructure to supply 3–3.5kW on a single cord or socket. That was a poor design choice by the Whatsminer engineering team, and it's kept them out of a lot of markets. The second issue is their slow boot time. While Antminers typically boot and tune in 1–5 minutes, older generations of Whatsminers can take up to 45 minutes. Thankfully, this has improved significantly in newer generations and firmware updates. They now boot in about 5–15 minutes, with a median around 10 minutes based on a sample of a few hundred units I last tested. Other than that, if you want a machine that runs trouble-free for five times as long as your average Antminer, it's Whatsminer -- every single day of the year.

I will tell you a little bit of practice. It does not matter what is better, MicroBT, Bitmain or something else. A good warranty and service periods are important for a miner. Some ASICs are repaired in a month, other ASICs in 3 months, because they are sent to the factory. In mining, you need to take these points into account.

I strongly disagree with your logic, you are saying  "don't worry about quality worry about when the miner breaks", this makes no sense to me, i rather buy gears that are unlikely to break than buy a gear that will break and then I have to repair it.