How to Choose Your First Bitcoin Miner: M70, M70S, or M73?
For most first-time miners, the choice is between the Whatsminer M70 (lowest upfront cost) and the Whatsminer M70S (best energy efficiency at ~13.5 J/TH). The M73 is a hydro-cooled, high-hashrate option best suited for experienced operators with large-scale deployments.
This guide helps you match the right hardware to your budget, holding horizon, and hosting setup. Hardware prices fluctuate — see each product page for current pricing.
Quick Decision Guide
Choose the M70 if:
- → Minimizing upfront hardware cost is your top priority
- → You're testing hosted mining before committing to a larger fleet
- → You plan a shorter holding period where the M70S efficiency premium doesn't pay off
Choose the M70S if:
- → You plan to hold long-term — the 13.5 J/TH efficiency compounds over time
- → You're building a fleet and the per-machine efficiency difference multiplies
- → You want the best air-cooled efficiency in the M70 generation
Choose the M73 if:
- → You need maximum hashrate in minimum rack space
- → Noise and density are critical constraints (hydro is near-silent)
- → You have hydro cooling infrastructure available
- → You are NOT choosing the M73 for energy efficiency — at 14.5 J/TH, it is less efficient per TH than the M70S
Full Comparison
| Spec | M70 | M70S | M73 |
|---|---|---|---|
| Hashrate | 214–242 TH/s | 226–258 TH/s | 470–526 TH/s |
| Efficiency | ~14.5 J/TH | ~13.5 J/TH ✓ best | 14.5 J/TH |
| Power Draw | ~3,140–3,500 W | ~3,500 W | ~7,200 W |
| Cooling | Air | Air | Hydro (required) |
| Monthly elec. at $0.07 | ~$158–$176 | ~$176 | ~$362 |
| Price | {{PRICE}} | {{PRICE}} | {{PRICE}} |
| Best for | Lowest upfront cost | Long-term efficiency | Density, quiet ops |
M70 vs. M70S: Is the Efficiency Premium Worth It?
At $0.07/kWh, a 1 J/TH improvement on a ~3,500W machine translates to approximately $13–$14/month in electricity savings ($176.40 vs ~$163/month for a hypothetical 13.5 vs 14.5 J/TH at the same hashrate). Over 12 months: ~$156–$168/machine. Over 24 months: ~$312–$336/machine.
Whether the M70S efficiency premium pays off depends on the price difference between models and your holding period. Use our profitability calculator to model both options with current pricing.
Frequently Asked Questions
What is the best bitcoin miner for a beginner in 2026?
For most beginners in 2026, the Whatsminer M70 or M70S is the best starting point. The M70 offers the lowest upfront cost in the series (214–242 TH/s, ~14.5 J/TH). The M70S offers better efficiency (226–258 TH/s, ~13.5 J/TH) at a moderately higher price — better for long-term holds. Both are air-cooled and straightforward to host. The M73 (~470 TH/s hydro) requires specialized infrastructure and is better suited for experienced operators.
Should a beginner choose the M70 or the M70S?
It depends on your budget and holding horizon. The M70 has a lower upfront cost and is the right choice if minimizing initial outlay matters. The M70S is ~7% more efficient (13.5 vs 14.5 J/TH), which translates to lower electricity costs over time — worth it if you plan a longer hold. Both deliver comparable hashrate and work well hosted at $0.07/kWh.
Is the Whatsminer M73 a good choice for a first-time miner?
Generally no. The M73 requires hydro cooling infrastructure, has a higher upfront cost, draws ~7,200W, and is less energy-efficient per TH (14.5 J/TH) than the M70S. It's optimized for large-scale operators who need maximum hashrate density and quiet operation. First-time miners and individual operators are better served by the M70 or M70S.
How do I decide between M70 and M70S?
Key decision factors: (1) upfront budget — M70 is cheaper; (2) holding period — M70S's 7% efficiency advantage compounds over longer holds; (3) fleet size — for large fleets, the M70S efficiency gain multiplies. Use our profitability calculator with the current price of each model and your expected holding period to compare the two side by side.
Not sure which miner to choose?
Contact us — we can recommend the right hardware based on your budget, goals, and timeline, and get you hosted at $0.07/kWh in Southeast Texas.