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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.

  • Powerhorse s8000id
  • Cat RP6500 E
  • Model s8000id
    Model s8000id

    Powerhorse 6,000W Dual-Fuel Generator

    6000W
    Running
    62 dB
    Noise
    View details
  • Model RP6500 E
    Model RP6500 E

    Cat 6,500W Gas Generator

    6500W
    Running
    0 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
SpecificationPowerhorse s8000idCat RP6500 E
General
Product type
Generator
Generator
Fuel
Dual-Fuel
Gasoline
InverterYesNo
Parallel capableYesNo
RV readyNoNo
Running watts
6000 W
Winner: Winner: 6500 W
Starting watts
8000 W
Winner: Winner: 8125 W
Noise (lower limit)
Winner: Winner: 62 dB
0 dB
Weight
Winner: Winner: 135.7 lbs
202 lbs
Run time @50% load
8 h
Winner: Winner: 12 h
Run time @25% load
Not available—
Not available—
Fuel tank
3.78 gal
7.9 gal
Fuel gaugeYesYes
Approx. dimensions (L × W × H)
27.2 x 20.3 x 21.7
32.9 x 27.4 x 24.7
Electrical
Voltage (AC)
120/240
120/240
Voltage (DC)
5
Not available—
GFCI outletsYesYes
Covered outletsYesYes
Automatic Voltage RegulationYesYes
THD
3 %
Not available—
Engine
Engine
298 cc OHV 4-stroke
420 cc OHV 4-stroke
Alternator
Not available—
Not available—
Starting system
Recoil, Electric, Remote
Recoil, Electric
Warranty
Warranty
2 years
2 years
Power by fuel
GasolineNot available—Not available—
Running watts
6000 W
6500 W
Starting watts
8000 W
8125 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
8 h
12 h
Run time @25% load
Not available—
Not available—
PropaneNot available—Not available—
Running watts
5400 W
Not available—
Starting watts
7200 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
7 h
Not available—
Run time @25% load
Not available—
Not available—
Other
Data center
Not available—
Not available—
Indicators
true
false
Compliance
EPA, ANSI/PGMA G300-2023
CARB, EPA
Security
Not available—
Not available—
Spark arrestorYesYes
Neutral
true
true
UPC
Not available—
815683020067
Core / High-priority specs
Running Watts (Gasoline)
6000
6500
Running Watts (Propane)
5400
Not available—
Starting Watts (Gasoline)
8000
8125
Starting Watts (Propane)
7200
Not available—
Runtime @ 50% Load (Gasoline)
8
12
Runtime @ 50% Load (Propane)
7
Not available—
AC Outlet Types
1x Duplex 120V 20A (5-20R) GFCI; 1x 120V 30A (L5-30R); 1x 120/240V 30A (L14-30R)
2x Duplex 120V 20A (5-20R); 1x 120/240V 30A (L14-30R); 1x 120V 30A (L5-30R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
OHV 4-stroke
OHV 4-stroke
Engine Displacement
298
420
Engine Oil Type
10W-30
SAE 30 or 10W-30
Runtime & fuel system
Runtime @ 50% Load (Gasoline)
8
12
Runtime @ 50% Load (Propane)
7
Not available—
Safety & compliance
Overload Protection System
Low oil and overload protection
Low oil and overload protection
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringYesNo
Included equipment
Starting Components
Recoil, Electric, Remote
Recoil, Electric
Included Accessories
Funnel, tool kit, key fob, battery charger, propane hose, and battery
Oil, funnel, tool kit, battery, and wheel kit
Warranty & identification
Part Number
6075644
502-3688
Additional specs
Summary
The Powerhorse s8000id is an 8000-watt dual fuel inverter generator designed for quiet and reliable power, suitable for various applications including home backup and outdoor events.
The Cat RP6500 E is a 6500-watt gasoline generator built for residential backup and light commercial work. Its 8125-watt peak capacity means it can start large tools and appliances that draw high inrush current, then sustain 6500 watts of continuous power for multiple devices simultaneously. A 7.9-gallon fuel tank delivers 12 hours of runtime at 50% load, which translates to roughly one full workday or overnight backup without refueling. The gasoline engine is straightforward to maintain and refuel anywhere, making this unit practical for job sites, outdoor events, and emergency home power.
  • Most Powerful
    Cat RP6500 E
    6500W running
  • Quietest
    Powerhorse s8000id
    62 dB
  • Longest Runtime
    Cat RP6500 E
    12h at 50% load
Where to buy
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Powerhorse s8000id
Store links
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Cat RP6500 E
Store links
No links yet.
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