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.
- Honda EM6500SX
- 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 | Honda EM6500SX | 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: 5500 W | Winner: Winner: 5500 W |
| Starting watts | Winner: Winner: 6500 W | 6300 W |
| Noise (lower limit) | 64 dB | Winner: Winner: 58 dB |
| Weight | 231.7 lbs | Winner: Winner: 216 lbs |
| Run time @50% load | Winner: Winner: 9.8 h | 5 h |
| Run time @25% load | Not available | 13.3 h |
| Fuel tank | 6.2 gal | 4.5 gal |
| Fuel gauge | Yes | Yes |
| Approx. dimensions (L × W × H) | 41.4 x 27.8 x 28.3 | 30.7 x 24.3 x 27.2 |
| Electrical | ||
| Voltage (AC) | 120/240 | 120/240 |
| Voltage (DC) | 12 | Not available |
| GFCI outlets | Yes | Yes |
| Covered outlets | Yes | No |
| Automatic Voltage Regulation | Yes | Yes |
| THD | Not available | <4.0% % |
| Engine | ||
| Engine | Honda iGX390 OHV 4-stroke, cast iron sleeve | 357 cc Yamaha MZ360 OHV 4-stroke |
| Alternator | Not available | Not available |
| Starting system | Recoil, Electric, Remote | Electric |
| Warranty | ||
| Warranty | 3 years | 3 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 5500 W | 5500 W |
| Starting watts | 6500 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 | 9.8 h | Not available |
| Run time @25% load | Not available | 13.3 h |
| Other | ||
| Data center | Not available | Not available |
| Indicators | false | true |
| Compliance | EPA, ANSI/PGMA G300-2023 | CARB, EPA |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | Floating | true |
| UPC | 786102007429 | 765053849371 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 5500 | 5500 |
| Starting Watts (Gasoline) | 6500 | 6300 |
| Runtime @ 50% Load (Gasoline) | 9.8 | Not available |
| Runtime @ 25% Load (Gasoline) | Not available | 13.3 |
| AC Outlet Types | AC outlets2x Duplex 120V 20A (5-20R) GFCI1x 120V 30A (L5-30R)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 | Honda iGX390 OHV 4-stroke, cast iron sleeve | OHV 4-stroke |
| Engine Displacement | 389 | 357 |
| Cylinder Sleeve | Cast iron sleeve | Not available |
| Engine Oil Type | 10W-30 | Not available |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | Not available | 13.3 |
| Runtime @ 50% Load (Gasoline) | 9.8 | 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 | Yes | Yes |
| Included equipment | ||
| Starting Components | Recoil, Electric, Remote | Not available |
| Included Accessories | Battery and wheel kit | Battery |
| Warranty & identification | ||
| Commercial Warranty | 3 | Not available |
| Part Number | EM6500SXK2AN | EF63ISDEX |
| Additional specs | ||
| Summary | The Honda EM6500SX is a 6500-watt generator equipped with an electric start, Bluetooth capability, and CO-MINDER for advanced carbon monoxide detection. It offers a long run time of up to 9.8 hours and can power a variety of household appliances. | 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 PowerfulHonda EM6500SX5500W running
- QuietestYamaha EF6300iSDE58 dB
- Longest RuntimeHonda EM6500SX9.8h at 50% load
Where to buy
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Honda EM6500SX
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Yamaha EF6300iSDE
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