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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.

  • A-iPower GXS5000D
  • Ryobi RY904500
  • Model GXS5000D
    Model GXS5000D

    A-iPower 4,000W Dual-Fuel Generator

    4000W
    Running
    68 dB
    Noise
    View details
  • Model RY904500
    Model RY904500

    Ryobi 3,600W Gas Generator

    3600W
    Running
    82 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
SpecificationA-iPower GXS5000DRyobi RY904500
General
Product type
Generator
Generator
Fuel
Dual-Fuel
Gasoline
InverterNoNo
Parallel capableNoNo
RV readyNoYes
Running watts
Winner: Winner: 4000 W
3600 W
Starting watts
Winner: Winner: 5000 W
4500 W
Noise (lower limit)
Winner: Winner: 68 dB
82 dB
Weight
Winner: Winner: 114.6 lbs
115 lbs
Run time @50% load
Not available—
Winner: Winner: 10 h
Run time @25% load
20 h
Not available—
Fuel tank
6.3 gal
4 gal
Fuel gaugeYesNo
Approx. dimensions (L × W × H)
24 x 23.6 x 24
24 x 26 x 20
Electrical
Voltage (AC)
120/240
120
Voltage (DC)
Not available—
Not available—
GFCI outletsNoNo
Covered outletsYesYes
Automatic Voltage RegulationYesYes
THD
Not available—
Not available—
Engine
Engine
223 cc OHV 4-stroke, cast iron sleeve
212 cc OHV 4-stroke
Alternator
Not available—
Not available—
Starting system
Recoil
Recoil
Warranty
Warranty
3 years
3 years
Power by fuel
GasolineNot available—Not available—
Running watts
4000 W
3600 W
Starting watts
5000 W
4500 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
Not available—
10 h
Run time @25% load
20 h
Not available—
PropaneNot available—Not available—
Running watts
3600 W
Not available—
Starting watts
4500 W
Not available—
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
Not available—
Not available—
Run time @25% load
11 h
Not available—
Other
Data center
Digital Data Center
Not available—
Indicators
true
false
Compliance
CARB, EPA, ANSI/PGMA G300-2023
EPA
Security
Not available—
Not available—
Spark arrestorYesYes
Neutral
Floating
Not available—
UPC
850016881311
46396056023
Core / High-priority specs
Running Watts (Gasoline)
4000
3600
Running Watts (Propane)
3600
Not available—
Starting Watts (Gasoline)
5000
4500
Starting Watts (Propane)
4500
Not available—
Rated Watts (Gasoline)
4000
Not available—
Rated Watts (Propane)
3600
Not available—
Peak Watts (Gasoline)
5000
Not available—
Peak Watts (Propane)
4500
Not available—
Runtime @ 50% Load (Gasoline)
Not available—
10
Runtime @ 25% Load (Gasoline)
20
Not available—
Runtime @ 25% Load (Propane)
11
Not available—
AC Outlet Types
2x Duplex 120V 20A (5-20R); 1x 120V 30A (L5-30R); 1x 120/240V 30A (L14-30R)
2x Duplex 120V 20A (5-20R) 1x 120V 30A (TT-30R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
OHV 4-stroke, cast iron sleeve
OHV 4-stroke
Engine Displacement
223
212
Cylinder Sleeve
cast iron sleeve
Not available—
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
20
Not available—
Runtime @ 50% Load (Gasoline)
Not available—
10
Safety & compliance
Overload Protection System
Low oil and overload protection
Low oil and overload protection
Low Oil ProtectionYesNo
Carbon Monoxide MonitoringYesYes
Included equipment
Mobility Components
Folding handle and wheels
Not available—
Included Accessories
Oil, funnel, tool kit, propane hose, RV adapter, and wheel kit
Oil and wheel kit
Warranty & identification
Commercial Warranty
3
Not available—
Additional specs
Summary
The A-iPower GXS5000D is a 4,000-watt dual-fuel portable generator built around a 223cc OHV 4-stroke engine with cast iron sleeves. On gasoline, it delivers 5,000 starting watts and 4,000 running watts. On propane, output drops to 4,500 starting watts and 3,600 running watts. This power level handles mid-range job site demands: circular saws, air compressors, multiple power tools running simultaneously, or a household refrigerator plus several circuits during an outage. The dual-fuel design means users can switch between gasoline and propane based on availability, storage preference, or runtime needs. Compliance with CARB and EPA standards confirms emissions control without sacrificing performance. The 6.3-gallon fuel tank stretches runtime significantly at light loads. On gasoline at 25 percent load, users get 20 hours of operation before refueling. This extended runtime makes the GXS5000D practical for all-day job sites or overnight emergency backup without constant attention. Propane runtime at the same load reaches 11 hours, a meaningful difference for users who prioritize fuel storage or longer shelf life.
The Ryobi RY904500 is a 3600-watt portable gasoline generator, delivering 4500 starting watts. It features a 212cc OHV engine, a 4-gallon fuel tank providing up to 10 hours of runtime at 50% load, and is RV-ready with a 120V 30A RV outlet.
  • Most Powerful
    A-iPower GXS5000D
    4000W running
  • Quietest
    A-iPower GXS5000D
    68 dB
  • Longest Runtime
    Ryobi RY904500
    10h at 50% load
Where to buy
Prices can change. We update these automatically.
A-iPower GXS5000D
Store links
No links yet.
Ryobi RY904500
Store links
No links yet.
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