Bitmain Antminer S9 eight-bin OEM reference vs Bitmain Antminer S9i four-bin OEM reference
Side-by-side specs, profitability, and home mining comparison.
Quick verdict
For most buyers the Bitmain Antminer S9i four-bin OEM reference is the stronger pick — Slightly refined chip selection provides marginally better efficiency. The Bitmain Antminer S9 eight-bin OEM reference runs 10.0 TH/s at 98.0 J/TH; the Bitmain Antminer S9i four-bin OEM reference runs 13.0 TH/s at 105.0 J/TH.
Specs verified against the D-Central Mining Bible \xc2\xb7 August 2026
Specifications Comparison
| Bitmain Antminer S9 eight-bin OEM reference | Specification | Bitmain Antminer S9i four-bin OEM reference |
|---|---|---|
| 10.0 TH/s | Hashrate | 13.0 TH/s |
| 980 W | Power Consumption | 1,365 W |
| 98.0 J/TH | Efficiency | 105.0 J/TH |
| 76 dB | Noise Level | 76 dB |
| 4.5 kg | Weight | 4.2 kg |
| 3,344 BTU/hr | BTU Output | 4,657 BTU/hr |
| — | Home Mining Score | — |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Bitmain Antminer S9 eight-bin OEM reference
Bitmain Antminer S9i four-bin OEM reference
Based on BTC price of $79,901 and current network difficulty as of Aug 28, 2026. Actual results vary.
Verdict
Two variants of the most successful Bitcoin miner ever produced. The S9 and S9i share the same era but have subtle differences.
The S9i is a minor iteration on the S9 with marginally improved efficiency. For practical purposes they are nearly identical — buy whichever is cheaper or more readily available.
Spec Deltas
Here is every spec where the Bitmain Antminer S9 eight-bin OEM reference and Bitmain Antminer S9i four-bin OEM reference actually differ, with the gap quantified:
- Bitmain Antminer S9i four-bin OEM reference 30% more hashrate (10.0 vs 13.0 TH/s)
- Bitmain Antminer S9 eight-bin OEM reference 28% better power draw (980 vs 1,365 W)
- Bitmain Antminer S9 eight-bin OEM reference 7% better efficiency (98.0 vs 105.0 J/TH)
- Bitmain Antminer S9i four-bin OEM reference 7% better weight (4.5 vs 4.2 kg)
- Bitmain Antminer S9i four-bin OEM reference 39% more heat output (3,344 vs 4,657 BTU/hr)
Best For...
Best for Profitability
TieBoth miners produce similar daily profit.
Best for Home Mining
TieBoth miners are equally suitable for home use.
Best for Efficiency
Bitmain Antminer S9 eight-bin OEM reference98.0 J/TH — lower electricity cost per unit of hashrate.
Frequently Asked Questions
Are parts interchangeable between the S9 and S9i?
Most components are compatible, including fans, PSUs, and control boards. Hashboards may differ in chip revision but are often swappable.
Are both still worth running in 2026?
For pure mining profitability, only at very cheap electricity. Both are popular for space heater conversion where the heat output becomes the primary value.
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