Compare Generators Side-by-Side
Select up to 4 generators to compare specs, power output, noise levels, runtime and more. Your compare URL is shareable.
- Powermate PM9400E
- Yamaha EF6300iSDE
Quick charts
Each chart uses its own Y-axis scale (so numbers are comparable within a chart).
Running watts
W
Starting watts
W
Noise
dB
Runtime @50%
h
Running watts by fuel
Shows how output changes across gasoline/propane/natural gas (when available).
| Specification | Powermate PM9400E | Yamaha EF6300iSDE |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Gasoline | Gasoline |
| Inverter | No | Yes |
| Parallel capable | No | No |
| RV ready | No | No |
| Running watts | Winner: Winner: 7500 W | 5500 W |
| Starting watts | Winner: Winner: 9400 W | 6300 W |
| Noise (lower limit) | 0 dB | Winner: Winner: 58 dB |
| Weight | Winner: Winner: 188 lbs | 216 lbs |
| Run time @50% load | Winner: Winner: 10 h | 5 h |
| Run time @25% load | 13 h | 13.3 h |
| Fuel tank | 8 gal | 4.5 gal |
| Fuel gauge | Yes | Yes |
| Approx. dimensions (L × W × H) | 31 x 27 x 26.4 | 30.7 x 24.3 x 27.2 |
| Electrical | ||
| Voltage (AC) | 120/240 | 120/240 |
| Voltage (DC) | Not available | Not available |
| GFCI outlets | Yes | Yes |
| Covered outlets | Yes | No |
| Automatic Voltage Regulation | Yes | Yes |
| THD | Not available | <4.0% % |
| Engine | ||
| Engine | 420 cc OHV 4-stroke | 357 cc Yamaha MZ360 OHV 4-stroke |
| Alternator | Not available | Not available |
| Starting system | Recoil, Electric | Electric |
| Warranty | ||
| Warranty | 3 years | 3 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 7500 W | 5500 W |
| Starting watts | 9400 W | 6300 W |
| Running amps (120V) | Not available | Not available |
| Running amps (240V) | Not available | Not available |
| Peak amps (120V) | Not available | Not available |
| Peak amps (240V) | Not available | Not available |
| Run time @50% load | 10 h | Not available |
| Run time @25% load | 13 h | 13.3 h |
| Other | ||
| Data center | Not available | Not available |
| Indicators | false | true |
| Compliance | EPA | CARB, EPA |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | true | true |
| UPC | 696471077827 | 765053849371 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 7500 | 5500 |
| Starting Watts (Gasoline) | 9400 | 6300 |
| Runtime @ 50% Load (Gasoline) | 10 | Not available |
| Runtime @ 25% Load (Gasoline) | 13 | 13.3 |
| AC Outlet Types | 2x Duplex 120V 20A (5-20R) GFCI; 1x 120/240V 30A (L14-30R) | 1x Duplex 120V 20A (5-20R) GFCI; 1x 120V 30A (L5-30R); 1x 120/240V 30A (L14-30R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | OHV 4-stroke | OHV 4-stroke |
| Engine Displacement | 420 | 357 |
| Engine Oil Type | 10W-30 / SAE 30 | Not available |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | 13 | 13.3 |
| Runtime @ 50% Load (Gasoline) | 10 | Not available |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection | Low oil and overload protection |
| Low Oil Protection | Yes | Yes |
| Carbon Monoxide Monitoring | No | Yes |
| Included equipment | ||
| Starting Components | Oil, battery charger, battery, and wheel kit | Not available |
| Included Accessories | Oil, battery charger, battery, and wheel kit | Battery |
| Warranty & identification | ||
| Part Number | Not available | EF63ISDEX |
| Additional specs | ||
| Summary | The Powermate PM9400E is a portable generator offering 9,400 starting watts and 7,500 running watts, equipped with a Generac 420cc OHV engine and an 8-gallon fuel tank, providing up to 13 hours of runtime at 25% load. | The Yamaha EF6300iSDE is a powerful and advanced inverter generator, ideal for emergency backup, recreational use, and DIY projects. It offers a maximum output of 6300 watts and operates quietly between 58 to 64 decibels. |
- Most PowerfulPowermate PM9400E7500W running
- QuietestYamaha EF6300iSDE58 dB
- Longest RuntimePowermate PM9400E10h at 50% load
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Powermate PM9400E
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