KS3: Best Models for Sale in 2026
Looking to buy KS3? We stock genuine cryptocurrency hardware on the proof-of-work algorithm, all factory-sealed, verified at rated hashrate and backed by real warranty support and worldwide shipping.
About KS3
A KS3 is an application-specific machine engineered for the proof-of-work algorithm that cryptocurrency runs on. Unlike general-purpose computers, it does one job, hashing proof-of-work, and does it at a speed measured in TH/s that ordinary hardware cannot approach.
Every KS3 we sell is genuine and brand-new. Because returns depend on coin price, network difficulty and your power cost, the efficiency of your machine is what protects your margin over time, so it pays to buy quality hardware from a source you can trust rather than chasing the cheapest used unit on a marketplace.
It also helps to understand where a KS3 fits in the wider cryptocurrency ecosystem. The network rewards whoever contributes the most efficient hashing power, so your machine effectively competes against every other miner on earth. Buying current-generation hardware, configured correctly and kept cool, is how you stay on the right side of that competition month after month.
KS3 in stock
Live pricing on in-stock hardware, dispatched fast with insured delivery.
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Alephium Miner
Bitmain Antminer AL1 15.6TH ASIC ALPH Alephium Miner
Original price was: $9,498.00.$9,239.00Current price is: $9,239.00. Add to cart -
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Bitmain Antminer K7 ASIC CKB Miner
Original price was: $3,192.00.$2,548.00Current price is: $2,548.00. Add to cart -
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Bitmain Antminer S21 Hyd ASIC BTC Bitcoin Miner
$2,459.00 Select options This product has multiple variants. The options may be chosen on the product page -
Asic Miners
Iceriver KS3 8000Gh/s KAS Miner (8Th/s)
$13,989.00 Select options This product has multiple variants. The options may be chosen on the product page
High hashrate
Class-leading TH/s output from the hardware on this page.
80+ countries
Insured, duty-paid shipping straight to your door.
100% genuine
Brand-new, factory-sealed ASICs with real warranty.
Free PSU
A compatible power supply included with every order.
How to set up your KS3
Setting up your KS3 is quick and beginner-friendly:
- Place it correctly. Install your KS3 in a cool, dust-free, well-ventilated space on a dedicated circuit rated for its draw.
- Connect and power on. Plug the included PSU into the hashboards and control board, then link the miner to your router by Ethernet.
- Find its IP and log in. Use your router or a network scanner to locate the unit, then open its built-in dashboard in a browser.
- Add your pool. Enter your cryptocurrency pool URL and your wallet address as the worker, then save. The miner starts submitting shares within minutes.
- Monitor and tune. Keep temperatures low and airflow clear so your KS3 holds its rated hashrate around the clock.
What to look for in a KS3
Not every KS3 suits the same job. Weigh these factors before you buy and you will never overpay for output you cannot use.
1. Hashrate
Hashrate, measured in TH/s, is how much work your KS3 does each second, and it maps directly to your share of block rewards. A higher number is appealing, but it only matters if the machine stays efficient at that speed. Always compare models like for like, and be wary of inflated headline figures a unit cannot sustain once it is warm and running around the clock.
2. Power efficiency
Efficiency is the single metric that decides whether you profit. Two machines with the same TH/s can post wildly different electricity bills. Divide the wattage by the hashrate for a clear cost-per-unit figure, then multiply your draw by your local power rate. A more efficient KS3 earns the same coins for a smaller monthly bill, and that gap only widens as difficulty climbs.
3. Noise and heat
Industrial ASICs are genuinely loud, often above 70 decibels, and they pump out real heat. If your KS3 will live in a spare room or garage rather than a data centre, prioritise quieter, lower-wattage units or budget for hydro and immersion cooling. Underestimating noise and heat is the most common regret among first-time home miners, so plan for it before the box arrives.
4. Total cost and resale
The sticker price is only part of the story. Factor in the included PSU, shipping, import duty (we cover it with DDP) and the unit’s likely resale value down the line. Proven brands such as Bitmain, MicroBT and Goldshell hold their value best on the second-hand market, which cushions your investment if you ever upgrade or rotate your hardware.
Is a KS3 right for you?
Whether a KS3 makes sense for you comes down to three things: your electricity cost, your available space and your appetite for a hands-on hobby or a scaled business. Home miners do best with quieter, efficient units they can live alongside; farm operators want density, uptime and easy fleet management. There is a right machine for both, and we stock both.
New miners should resist the urge to over-buy. A single, efficient KS3 teaches you the ropes and starts earning cryptocurrency immediately, and you can always add more once you understand your numbers. Scaling operators, meanwhile, should talk to us about bulk pricing and infrastructure so every unit you add is profitable from day one.
Is a KS3 profitable?
Yes, a KS3 can turn a healthy profit, provided the unit is efficient and your power is reasonably priced. Because cryptocurrency price and difficulty move constantly, the safest approach is to model returns first and buy hardware that stays ahead of rising difficulty.
We are happy to crunch the figures with you and recommend the most cost-effective machine for your budget and electricity rate.
Top KS3 models compared
Here is how the most popular options stack up. Each links to its full spec sheet and live price so you can compare at a glance.
- Bitmain Antminer KS3 9.4TH 3500W (KAS) Miner — in stock at MiningGear Co, brand-new and bench-tested before it ships.
- Bitmain Antminer S9 13.5 Th/s Asic Miner 16nm Bitcoin Miner — in stock at MiningGear Co, brand-new and bench-tested before it ships.
- Bitmain Antminer E3 180 Mh/s Ethereum Asic Miner — in stock at MiningGear Co, brand-new and bench-tested before it ships.
- Iceriver KS3 8000Gh/s KAS Miner (8Th/s) — in stock at MiningGear Co, brand-new and bench-tested before it ships.
- Bitmain Antminer S21 Hyd ASIC BTC Bitcoin Miner — in stock at MiningGear Co, brand-new and bench-tested before it ships.
Mining other coins too? Compare our How Much Do Miners Earn, Seed Phrase, Shift Miner hardware and build a diversified farm from one trusted supplier.
Deciding between these models comes down to your budget and your power situation. If you want maximum output and have cheap electricity, lean toward the higher-hashrate units at the top of the list. If you are mining at home or watching your upfront spend, a mid-range KS3 often delivers the best balance of price, efficiency and noise. Still unsure? Send us your electricity rate and we will tell you exactly which one pays back fastest.
Ks3: pitfalls to avoid
The most common mistake new buyers make is chasing the cheapest KS3 they can find, often a used or grey-market unit with no warranty. The savings rarely survive the first repair or the lost days of downtime. The second mistake is ignoring efficiency and focusing only on headline hashrate, which leads to an electricity bill that quietly erases the profit. The third is underestimating noise, heat and power requirements at home.
Avoid all three by buying a brand-new, efficient KS3 from a trusted source, modelling your cryptocurrency returns at your real power rate before you order, and preparing your space and electrical supply in advance. Do that and your first machine will be a pleasure to run rather than a source of regret.
Network difficulty and your KS3
As more hashrate joins cryptocurrency, network difficulty rises and each unit of hashrate earns a little less. That is precisely why efficiency matters so much: upgrading to a newer, more efficient KS3 is the standard way miners stay ahead of rising difficulty and protect their margins over the long run.
When you buy quality hardware now, you lock in a better cost-per-hash that keeps working in your favour as the network grows. Our specialists can advise which model gives you the most headroom for your budget, so your KS3 stays profitable for as many difficulty epochs as possible.
What you get when you order a KS3
Your KS3 order is straightforward and transparent. You receive a genuine, brand-new machine with its included PSU, clear documentation, and a clean checkout by crypto or bank wire. There are no hidden fees, no surprise customs charges thanks to our DDP shipping, and no pressure tactics, just honest pricing on hardware we stand behind.
Once it ships, you can track your KS3 every step of the way, and our team stays reachable if anything needs attention on arrival. From the first message to the day your machine is hashing, you deal with real people who know this hardware inside out.
Choosing a cryptocurrency pool for your KS3
The pool you connect your KS3 to has a direct effect on earnings. Prioritise low fees, high uptime, low-latency servers near you and a clear payout scheme such as PPS or PPLNS. A reliable pool keeps your hardware productive and your cryptocurrency payouts consistent and easy to forecast.
Set up a wallet first, send a small test payout, then point your full hashrate at the pool. Our team can recommend reputable pools that work well with the hardware you buy from us, and help you configure your KS3 so it connects on the first try.
Why buy your KS3 from MiningGear Co
Free PSU + deals
A matched power supply ships free with every KS3, and bulk buyers get tailored wholesale pricing.
Worldwide delivery
We ship insured and duty-paid to over 80 countries, with tracking from our warehouse to your door.
Genuine stock
Your KS3 is sourced through authorised channels, brand-new and sealed, never refurbished or grey-market.
Safe payment
Checkout by crypto (BTC, ETH, USDT) or bank wire. No personal wallets, no gift cards, no scams.
After-sales support
Real warranty plus hands-on help with setup, firmware and repairs from engineers who run miners daily.
Trusted by miners
From first-time hobbyists to large farms, customers come back to us to scale because we deliver.
Browse more KS3
Live pricing on in-stock hardware, dispatched fast with insured delivery.
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Bitmain Antminer KS5 20T ASIC Kaspa Miner
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MiningGear Co is part of a trusted network of specialist online stores. For premium purchases beyond mining hardware, our partners at StackCrate Co and NexChrono bring the same standards of genuine stock, secure payment and worldwide insured shipping you get here.
Want the background? The independent cryptocurrency page on Wikipedia explains the protocol and its mining model in plain terms.
KS3 FAQ
What is the best KS3? The best KS3 for you depends on your budget, electricity rate and whether you mine at home or at scale. Our top in-stock picks are listed above; message our team and we will recommend the right model for your setup.
Is a KS3 profitable? Profitability depends on cryptocurrency price, network difficulty and your power cost. An efficient unit on cheap electricity can return solid margins. We will model your numbers before you buy.
Is the KS3 brand-new? Yes. Every unit we sell is factory-sealed, bench-tested and backed by genuine warranty and repair support.
How fast is shipping? We dispatch promptly once payment clears and ship worldwide with tracked, insured, Delivered-Duty-Paid couriers to over 80 countries.
How do I pay for a KS3? You can pay by bank wire (T/T) or cryptocurrency including BTC, ETH and USDT. We never ask for gift cards or payments to personal wallets.
Do you offer bulk pricing? Yes. We offer wholesale discounts on orders of 10+ units. Contact our team for a tailored bulk quote and farm-scale support, including hosting and infrastructure advice.
Does the KS3 come with a power supply? Yes. Every KS3 ships with a compatible PSU included at no extra cost, so you can plug in and start mining as soon as it arrives.
Can I mine cryptocurrency at home? Absolutely. Many of our customers run a KS3 at home. Just plan for the noise, heat and power draw, and pick an efficient model suited to a residential space, which our team is glad to help you choose.
Get your KS3 shipped this week
Pick your model, pay securely by crypto or wire, and we will have your KS3 on its way fast. Use HELLO70 for $70 off, and ask us anything before you order.