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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.

  • WEN DF680iX
  • Cat RP6500 E
  • Model DF680iX
    Model DF680iX

    WEN 5,100W Dual-Fuel Generator

    5100W
    Running
    64 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
SpecificationWEN DF680iXCat RP6500 E
General
Product type
Generator
Generator
Fuel
Dual-Fuel
Gasoline
InverterYesNo
Parallel capableYesNo
RV readyYesNo
Running watts
5100 W
Winner: Winner: 6500 W
Starting watts
6800 W
Winner: Winner: 8125 W
Noise (lower limit)
Winner: Winner: 64 dB
0 dB
Weight
Winner: Winner: 94.8 lbs
202 lbs
Run time @50% load
6.1 h
Winner: Winner: 12 h
Run time @25% load
Not available—
Not available—
Fuel tank
2.9 gal
7.9 gal
Fuel gaugeYesYes
Approx. dimensions (L × W × H)
22.8 x 16.6 x 19.7
32.9 x 27.4 x 24.7
Electrical
Voltage (AC)
120/240
120/240
Voltage (DC)
12
Not available—
GFCI outletsNoYes
Covered outletsYesYes
Automatic Voltage RegulationYesYes
THD
1.2 %
Not available—
Engine
Engine
224 cc OHV 4-stroke
420 cc OHV 4-stroke
Alternator
Not available—
Not available—
Starting system
Recoil, Electric
Recoil, Electric
Warranty
Warranty
3 years
2 years
Power by fuel
GasolineNot available—Not available—
Running watts
5100 W
6500 W
Starting watts
6800 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
6.1 h
12 h
Run time @25% load
Not available—
Not available—
PropaneNot available—Not available—
Running watts
4500 W
Not available—
Starting watts
6000 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
9 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
44459096801
815683020067
Core / High-priority specs
Running Watts (Gasoline)
5100
6500
Running Watts (Propane)
4500
Not available—
Starting Watts (Gasoline)
6800
8125
Starting Watts (Propane)
6000
Not available—
Runtime @ 50% Load (Gasoline)
6.1
12
Runtime @ 50% Load (Propane)
9
Not available—
AC Outlet Types
1x Duplex 120V 20A (5-20R); 1x 120V 30A (TT-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
224
420
Engine Oil Type
Not available—
SAE 30 or 10W-30
Runtime & fuel system
Runtime @ 50% Load (Gasoline)
6.1
12
Runtime @ 50% Load (Propane)
9
Not available—
Safety & compliance
Overload Protection System
Not available—
Low oil and overload protection
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringYesNo
Included equipment
Starting Components
Not available—
Recoil, Electric
Included Accessories
Oil, funnel, tool kit, propane hose, and battery
Oil, funnel, tool kit, battery, and wheel kit
Warranty & identification
Part Number
Not available—
502-3688
Additional specs
Summary
The WEN DF680iX is a 6800-watt dual fuel inverter generator designed for versatility and convenience, featuring electric start, CO shutdown sensor, and compatibility with both gasoline and propane fuels.
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
    WEN DF680iX
    64 dB
  • Longest Runtime
    Cat RP6500 E
    12h at 50% load
Where to buy
Prices can change. We update these automatically.
WEN DF680iX
Store links
No links yet.
Cat RP6500 E
Store links
No links yet.
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