The Antminer L9 offers the better overall ROI in this comparison because it consumes less electricity and has a substantially lower purchase price. The ElphaPex DG2 delivers more hashrate and higher gross revenue, but its extra 1 GH/s of rated output does not fully offset its higher power draw and upfront cost under most electricity-rate scenarios.
At rated specifications, the ElphaPex DG2 produces 18 GH/s at 3,960 W, while the 17 GH/s Antminer L9 draws 3,570 W. That gives the L9 an efficiency advantage of 210 J/GH versus 220 J/GH for the DG2.
| Headline comparison | ElphaPex DG2 | Antminer L9 17G |
| Rated hashrate | 18 GH/s | 17 GH/s |
| Rated wall power | 3,960 W | 3,570 W |
| Rated efficiency | 220 J/GH | 210 J/GH |
| Daily energy consumption | 95.04 kWh | 85.68 kWh |
| Illustrative daily gross revenue | $13.14 | $12.41 |
| Reference JSBIT price | $6,880 | Approximately $4,150–$4,550 |
| Best advantage | Higher total output | Better efficiency and ROI |
Using an illustrative Scrypt revenue of $0.73 per GH/s per day, the DG2 earns approximately $0.73 more gross revenue per day. However, it consumes 9.36 kWh more electricity per day. At $0.10/kWh, the L9 consequently produces slightly higher net profit despite its lower hashrate.
Prices, coin values and network difficulty change continuously. The calculations below are planning examples rather than guaranteed returns.
ElphaPex DG2 vs Antminer L9 Hashrate and Mining Performance
Both miners are high-output Scrypt ASICs designed for continuous Litecoin and Dogecoin mining. Their rated hashrates differ by only 1 GH/s, but real pool-side performance can vary with firmware, temperature, pool latency and individual unit quality.
Rated Hashrate and Supported Mining Algorithm
The base ElphaPex DG2 is rated at 18 GH/s, normally with a performance tolerance of approximately ±3%. The Antminer L9 is available in several variants, including 15, 16 and 17 GH/s. This comparison uses the highest-output 17 GH/s version.
| Specification | ElphaPex DG2 | Antminer L9 |
| Algorithm | Scrypt | Scrypt |
| Rated hashrate | 18 GH/s | 17 GH/s |
| Primary coins | LTC and DOGE | LTC and DOGE |
| Other compatible coins | Pool-dependent Scrypt coins | Pool-dependent Scrypt coins |
| Network interface | RJ45 Ethernet | RJ45 Ethernet |
Bitmain’s official L9 datasheet lists the 17 GH/s model at 3,570 W and 210 J/GH, with an expected hashrate variance of ±3% (Bitmain L9 datasheet).
Dogecoin supports Auxiliary Proof of Work with Litecoin. This lets a compatible pool use the same Scrypt work to earn rewards from both networks rather than dividing hashrate between them (Dogecoin mining guide).
Miner Dashboard vs. Pool-Side Hashrate
A local dashboard calculates hashrate from work completed inside the miner. A pool estimates hashrate from submitted and accepted shares. The two values therefore will not match at every moment.
Representative sustained readings are:
| Hashrate source | ElphaPex DG2 | Antminer L9 17G |
| Rated hashrate | 18 GH/s | 17 GH/s |
| Representative dashboard range | 18.0–19.4 GH/s | 16.7–17.3 GH/s |
| Expected pool-side range | 17.6–19.2 GH/s | 16.5–17.2 GH/s |
A published short-run DG2 test observed approximately 19.4 GH/s locally and as much as 19.6 GH/s at the pool, although one above-average unit should not be treated as a guarantee for every DG2.
For profitability calculations, use a seven-day pool average rather than the highest dashboard reading.
Hashrate Fluctuation During Sustained Mining
Short fluctuations of a few percent are normal. They can result from:
- Dashboard sampling intervals
- Pool share difficulty
- Normal share luck
- Fan-speed changes
- Intake-temperature variation
- Pool reconnection
- Automatic frequency adjustment
A stable DG2 should remain near its 18 GH/s target, while a stable L9 17G should remain near 17 GH/s. A brief peak above the rated figure is less important than an average that stays within specification for several days.
Persistent output more than 3% below specification deserves investigation after allowing sufficient warm-up time.
Rejected Shares, Uptime and Hardware Errors
A higher local hashrate does not improve revenue if the pool rejects a significant portion of the work. Under a good network configuration, both miners should normally maintain rejected-share rates below approximately 1%.
| Stability target | Recommended level |
| Pool uptime | Above 98% |
| Rejected shares | Below 1% |
| Persistent hardware errors | None |
| Unexpected restarts | None |
| Pool-side deficit | Preferably below 3% of dashboard average |
Configure backup pool endpoints, use wired Ethernet and monitor both local and pool data. Rejected shares can be caused by network latency, an incorrect stratum address, unstable firmware or overheating.
ElphaPex DG2 vs Antminer L9 Power Consumption and Efficiency
The L9’s efficiency is its primary advantage. It delivers about 94.4% of the DG2’s rated hashrate while consuming only about 90.2% as much power.
Rated Power vs. Wall-Side Power Draw
| Power measurement | ElphaPex DG2 | Antminer L9 17G |
| Rated power at 25°C | 3,960 W | 3,570 W |
| Rated tolerance | Typically model-dependent | ±5% |
| Representative sustained wall range | 3,960–4,055 W | Approximately 3,500–3,750 W |
| Possible startup demand | Above sustained load | Above sustained load |
A public DG2 test recorded an approximately 4,300 W startup peak before the machine settled near 4,050–4,055 W. Buyers should therefore size the circuit for more than the advertised continuous figure.
Wall power changes with voltage, ambient temperature, fan speed, PSU efficiency and manufacturing variation. Use a properly rated meter on the complete miner rather than relying solely on dashboard estimates.
Energy Efficiency Measured in Joules per Megahash
Efficiency is calculated by dividing wall power by hashrate. Lower values are better.
| Miner | Rated calculation | Rated efficiency |
| ElphaPex DG2 | 3,960 W ÷ 18,000 MH/s | 0.220 J/MH |
| Antminer L9 17G | 3,570 W ÷ 17,000 MH/s | 0.210 J/MH |
The same figures can be expressed as 220 J/GH and 210 J/GH.
The L9 uses approximately 4.5% less energy per unit of rated hashrate. That difference becomes financially important when a miner runs continuously for months or when electricity is expensive.
Daily and Monthly Electricity Consumption
| Miner | Daily energy | 30-day energy | Annual energy |
| ElphaPex DG2 | 95.04 kWh | 2,851.2 kWh | 34,689.6 kWh |
| Antminer L9 17G | 85.68 kWh | 2,570.4 kWh | 31,273.2 kWh |
| L9 savings | 9.36 kWh | 280.8 kWh | 3,416.4 kWh |
At $0.10/kWh, the L9 saves approximately $28.08 per month or $341.64 per year in direct miner electricity.
These figures exclude exhaust fans, air conditioning, transformers and power-distribution losses.
Hashrate Delivered per Kilowatt of Power
| Miner | Rated hashrate per kW |
| ElphaPex DG2 | 4.55 GH/s per kW |
| Antminer L9 17G | 4.76 GH/s per kW |
The DG2 provides more total hashrate per machine, but the L9 places more Scrypt capacity behind each kilowatt of available electrical infrastructure.
This distinction matters in facilities constrained by transformer, circuit or cooling capacity. Ten L9 17G units provide 170 GH/s at 35.7 kW, while ten DG2 units provide 180 GH/s at 39.6 kW.
ElphaPex DG2 vs Antminer L9 Temperature, Noise and Stability
Both machines are industrial air-cooled ASICs. Neither should be treated as a quiet home miner, even if a garage or outbuilding can accommodate the electrical load.
Hashboard and Exhaust Temperature Comparison
Exact temperatures depend heavily on sensor location, firmware and ambient conditions. Under a suitable 20–25°C intake temperature, both miners should stabilize without thermal throttling.
| Thermal characteristic | ElphaPex DG2 | Antminer L9 |
| Approximate heat output | 13,510 BTU/h | 12,180 BTU/h |
| Typical intake target | Cool, clean and unrestricted | Cool, clean and unrestricted |
| Maximum published operating temperature | Verify current ElphaPex documentation | 35°C |
| Relative ventilation demand | Higher | Lower |
The DG2 produces approximately 1,330 BTU/h more heat because of its additional 390 W of rated power.
Do not compare sensor values directly unless both miners use the same sensor placement. Pool stability and absence of throttling are often more useful comparative indicators than one dashboard temperature number.
Fan Speed and Operating Noise Comparison
Bitmain rates the L9 at 75 dBA under specified maximum-fan conditions. Common DG2 specifications also place it near 75 dBA.
| Acoustic factor | ElphaPex DG2 | Antminer L9 |
| Typical listed noise | Approximately 75 dBA | 75 dBA |
| Cooling | High-speed air cooling | High-speed air cooling |
| Suitable for a bedroom | No | No |
| Suitable for dedicated mining space | Yes | Yes |
Actual noise changes with fan speed and room temperature. The L9 may have a small practical noise advantage because it must remove less heat, but both require acoustic planning.
High-frequency fan noise can travel through ducts and thin walls. Vibration-isolating feet, rigid shelving and correctly designed exhaust ducting can reduce disturbance without blocking airflow.
Thermal Throttling and Unexpected Restarts
Neither miner should throttle or restart when operated within voltage and temperature specifications. Common warning signs include:
- Falling hashrate as room temperature rises
- Fans remaining at maximum speed
- Missing hashboards
- Abnormally high hardware errors
- Repeated pool disconnections
- Automatic frequency reduction
- Unexpected reboot events
If two miners use the same intake air, place them so one machine’s exhaust cannot enter the other’s intake. The higher-power DG2 becomes particularly vulnerable to recirculation in a small enclosure.
Cooling Requirements for Continuous Operation
A complete deployment plan should include:
- Dedicated high-voltage circuits
- Correctly rated breakers, connectors and PDUs
- Direct cool-air intake
- Hot-air exhaust separated from intake
- Approximately 12,000–13,500 BTU/h of heat removal per unit
- Dust management
- Temperature and fan monitoring
- Wired Ethernet
- Fire and smoke detection
Cooling electricity must be added to profitability calculations. If facility ventilation adds 10% to the miners’ loads, the DG2 system would approach 4.36 kW and the L9 system about 3.93 kW.
Suitable ventilation categories and components can be reviewed through theJSBIT mining cooling collection.
ElphaPex DG2 vs Antminer L9 Daily Profit and Payback Period
Profitability depends on revenue per GH/s, pool fees, accepted shares, electricity, hardware price and facility overhead. A fair comparison must apply the same assumptions to both miners.
The following model assumes:
- Gross Scrypt revenue of $0.73 per GH/s per day
- Rated hashrate and power
- 100% headline uptime
- No separate cooling expense
- DG2 hardware price of $6,880
- L9 purchase price of $4,350, representing the midpoint of a $4,150–$4,550 range
- No shipping, tax, import duty or installation cost
Gross Mining Revenue Under the Same Conditions
| Miner | Rated hashrate | Daily gross revenue | 30-day gross revenue |
| ElphaPex DG2 | 18 GH/s | $8.53 | $255.90 |
| Antminer L9 17G | 17 GH/s | $6.70 | $210.00 |
| DG2 advantage | 1 GH/s | $0.73 | $21.90 |
The DG2 wins gross revenue because of its higher hashrate. Gross revenue alone, however, ignores the extra 390 W it consumes continuously.
Net Profit at Different Electricity Rates
| Electricity rate | DG2 daily net | L9 daily net | Better daily net |
| $0.05/kWh | $8.39 | $8.13 | DG2 by $0.26 |
| $0.10/kWh | $3.64 | $3.84 | L9 by $0.20 |
| $0.15/kWh | -$1.12 | -$0.44 | Neither is profitable |
The electricity rate at which the additional DG2 hashrate stops covering its additional power is approximately:
$0.73 additional daily revenue ÷ 9.36 additional daily kWh = $0.078/kWh
Below roughly 7.8 cents per kWh, the DG2 produces slightly more daily net income. Above that point, the L9’s efficiency gives it the advantage.
Hardware Price and Total Initial Investment
At the researched JSBIT pricing, the difference in hardware cost is much larger than the difference in hashrate.
| Initial-cost item | ElphaPex DG2 | Antminer L9 17G |
| Reference hardware price | $6,880 | $4,350 midpoint |
| Rated hashrate | 18 GH/s | 17 GH/s |
| Hardware cost per GH/s | $382.22 | $255.88 |
| Additional electrical work | Site-dependent | Site-dependent |
| Shipping and import costs | Not included | Not included |
The L9 provides rated hashrate at a much lower acquisition cost per GH/s. This is the decisive reason it leads on hardware ROI in the current comparison.
TheJSBIT Dogecoin miner collection lists current DG2 and Antminer L9 options. Buyers should confirm the exact L9 hashrate variant because 15, 16 and 17 GH/s models have different output and power specifications.
Payback Period Under Changing Coin Prices and Difficulty
Hardware-only payback is calculated as purchase price divided by daily net profit.
| Electricity rate | DG2 payback | L9 payback |
| $0.05/kWh | About 820 days / 26.9 months | About 535 days / 17.6 months |
| $0.10/kWh | About 1,892 days / 62.2 months | About 1,132 days / 37.2 months |
| $0.15/kWh | No payback | No payback |
These payback periods assume that revenue and difficulty never change, which is unlikely. A better purchasing decision should stress-test:
- 20% lower mining revenue
- 20% higher mining revenue
- 3% pool-side downtime
- 1% rejected shares
- 5%–10% cooling overhead
- Higher network difficulty
- Shipping, taxes and import charges
- Maintenance downtime
- Resale value after two or three years
If gross revenue falls by 20%, both payback periods lengthen sharply. If revenue increases while difficulty remains stable, the DG2 benefits slightly more in absolute dollars because it has more hashrate. The L9 nevertheless begins with a substantial capital-cost advantage.
Conclusion: Should You Buy the ElphaPex DG2 or Antminer L9?
Buy the Antminer L9 17G if your priority is efficiency, lower initial investment and faster payback. It delivers nearly as much hashrate as the DG2, consumes 390 W less power and costs substantially less under the reference pricing.
Buy the ElphaPex DG2 if your facility has inexpensive electricity below approximately $0.078/kWh and your priority is maximum hashrate per miner or rack position. A strong DG2 may also outperform its rated 18 GH/s specification, although above-spec performance should not be assumed for every unit.
The direct verdict is:
- Best total rated hashrate: ElphaPex DG2
- Best energy efficiency: Antminer L9
- Best hardware cost per GH/s: Antminer L9
- Best payback period at $0.05 and $0.10/kWh: Antminer L9
- Best daily net profit at very cheap power: ElphaPex DG2
- Best overall value under current assumptions: Antminer L9 17G
Compare current batches, prices and availability through JSBIT’sElphaPex DG range andScrypt mining hardware collection.
ElphaPex DG2 vs Antminer L9 FAQs
Can the ElphaPex DG2 and Antminer L9 Mine the Same Cryptocurrencies?
Yes. Both are Scrypt ASIC miners and can mine compatible Scrypt cryptocurrencies supported by the selected pool.
Can Both Miners Mine Litecoin and Dogecoin at the Same Time?
Yes. A compatible merged-mining pool can use the same Scrypt work to earn Litecoin and Dogecoin rewards.
Do the ElphaPex DG2 and Antminer L9 Require the Same Input Voltage?
Not exactly. The L9 officially requires 220–277 V. The DG2 is generally designed for high-voltage operation, but its exact acceptable range should be confirmed from its label and manual before installation.
Do Either of These Miners Support Wi-Fi?
No native Wi-Fi is normally specified. Both use wired RJ45 Ethernet for reliable pool connectivity.
Are Their Firmware, Fans or Power Supplies Interchangeable?
No. They use manufacturer- and model-specific firmware and hardware. Never install L9 firmware or replacement components in a DG2, or vice versa, unless the manufacturer explicitly approves the exact part.
