Technical Specifications
| Hashrate | 9.4 TH/s |
|---|---|
| Power Consumption | 3,188 W |
| Efficiency | 339 J/TH |
| Algorithm | kHeavyHash |
| Mineable Coins | Kaspa |
| Noise Level | 75 dB(A) |
| Cooling | Air — 4 fans |
| Dimensions | 400 × 195 × 290 mm |
| Weight | 14 kg |
| Release | 2023-Q4 |
| Approx. Price | ~$1,800 USD |
Mining Profitability in 2026
To calculate exact daily, weekly, and monthly revenue for the Bitmain Antminer KS3, use our live Kaspa mining calculator. Enter 9.4 TH/s as your hashrate and 3,188 W as power consumption, then input your electricity cost per kWh. The calculator fetches live price, difficulty, and block reward data every 10 minutes from the network.
Break-even tip: Enter the approximate price of this unit (~$1,800) in the hardware cost field of the calculator to see your estimated days-to-break-even based on current network conditions.
Pros & Cons
Pros
- Lower entry price on the secondary market
- Same Bitmain build quality and support ecosystem
- Good option to test Kaspa mining at lower capital outlay
Cons
- Much less efficient than KS5 Pro (339 vs 150 W/TH)
- High power draw relative to hashrate
- Low ROI potential at electricity rates above $0.04/kWh
Frequently Asked Questions
Is the Antminer KS3 still worth buying in 2026?
The KS3's 339 W/TH efficiency is roughly 2× worse than the KS5 Pro's 150 W/TH, making it difficult to profit at electricity above $0.04/kWh. If available at a deep secondary discount and you have very cheap electricity, it can generate returns. For most miners, investing more upfront in a KS5 Pro offers a much better long-term ROI.
How does the KS3 compare to the KS5 Pro?
The KS5 Pro delivers more than twice the hashrate (21 vs 9.4 TH/s) at roughly the same power draw — a massive efficiency gap. The KS3's only advantage is lower acquisition cost. Unless you find the KS3 at a very deep discount with matching ROI expectations, the KS5 Pro is the correct choice for new Kaspa mining investments in 2026.
Can I mine Kaspa with the KS3 on a pool?
Yes — the KS3 uses standard Stratum V1 and works with all major Kaspa pools (K1Pool, WoolyPooly, HeroMiners). Its 9.4 TH/s earns proportional pool rewards. Pool mining is essential at this hashrate — solo mining would produce highly irregular reward intervals given Kaspa's current multi-petahash network difficulty.
What is the resale value of the Antminer KS3?
The KS3's secondary-market value has fallen substantially since its 2023 launch as more efficient KAS miners have displaced it. Current resale prices range from $800–$1,500 depending on market conditions and KAS price. Factor potential resale value into your ROI model, particularly if you plan to upgrade hardware when the next generation of KAS ASICs is released.
Where to Buy
The Bitmain Antminer KS3 is available from:
- Bitmain Official Shop — shop.bitmain.com (new units, with warranty)
- MinerBros — authorised reseller, ships globally
- Kaboomracks — US-based reseller, new and refurbished
- eBay / secondary market — used units, verify hashrate stability before purchasing
Price estimates on this page are approximate and subject to market fluctuations. Always compare prices from multiple sellers before purchasing.
Compare the Bitmain Antminer KS3
See how the Bitmain Antminer KS3 stacks up against other miners that can mine the same coins — hashrate, power draw, efficiency, and profitability side by side: