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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.

  • Ryobi RY906500S
  • Yamaha EF6300iSDE
  • Model RY906500S
    Model RY906500S

    Ryobi 6,500W Gas Generator

    6500W
    Running
    72 dB
    Noise
    View details
  • Model EF6300iSDE
    Model EF6300iSDE

    Yamaha 5,500W Gas Generator

    5500W
    Running
    58 dB
    Noise
    View details
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).
Generator Specifications Comparison
SpecificationRyobi RY906500SYamaha EF6300iSDE
General
Product type
Generator
Generator
Fuel
Gasoline
Gasoline
InverterNoYes
Parallel capableNoNo
RV readyNoNo
Running watts
Winner: Winner: 6500 W
5500 W
Starting watts
Winner: Winner: 8125 W
6300 W
Noise (lower limit)
72 dB
Winner: Winner: 58 dB
Weight
Winner: Winner: 195 lbs
216 lbs
Run time @50% load
Winner: Winner: 10 h
5 h
Run time @25% load
Not available
13.3 h
Fuel tank
6 gal
4.5 gal
Fuel gaugeNoYes
Approx. dimensions (L × W × H)
39 x 29 x 24.5
30.7 x 24.3 x 27.2
Electrical
Voltage (AC)
120/240
120/240
Voltage (DC)
Not available
Not available
GFCI outletsYesYes
Covered outletsYesNo
Automatic Voltage RegulationYesYes
THD
20 %
<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
Warranty
Warranty
3 years
3 years
Power by fuel
GasolineNot availableNot available
Running watts
6500 W
5500 W
Starting watts
8125 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
Not available
13.3 h
Other
Data center
Not available
Not available
Indicators
false
true
Compliance
EPA
CARB, EPA
Security
Not available
Not available
Spark arrestorYesYes
Neutral
Bonded to frame
true
UPC
46396023483
765053849371
Core / High-priority specs
Running Watts (Gasoline)
6500
5500
Starting Watts (Gasoline)
8125
6300
Runtime @ 50% Load (Gasoline)
10
Not available
Runtime @ 25% Load (Gasoline)
Not available
13.3
AC Outlet Types
2x Duplex 120V 20A (5-20R) GFCI1x 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
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
Not available
13.3
Runtime @ 50% Load (Gasoline)
10
Not available
Safety & compliance
Overload Protection System
Low oil and overload protection, CO monitoring
Low oil and overload protection
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringYesYes
Included equipment
Included Accessories
Oil, tool kit, and wheel kit
Battery
Warranty & identification
Commercial Warranty
3
Not available
Part Number
Not available
EF63ISDEX
Additional specs
Summary
The Ryobi RY906500S is a 6,500-watt gasoline-powered portable generator equipped with a CO shutdown sensor for enhanced safety. It features a 6-gallon fuel tank providing up to 10 hours of runtime at 50% load, and includes multiple outlets for versatile power needs.
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 Powerful
    Ryobi RY906500S
    6500W running
  • Quietest
    Yamaha EF6300iSDE
    58 dB
  • Longest Runtime
    Ryobi RY906500S
    10h at 50% load
Where to buy
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Ryobi RY906500S
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Yamaha EF6300iSDE
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