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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.

  • Genmax GM10500XiT
  • Predator 72899
  • Model GM10500XiT
    Model GM10500XiT

    Genmax 7,800W Tri-Fuel Generator

    7800W
    Running
    74 dB
    Noise
    View details
  • Model 72899
    Model 72899

    Predator 3,000W Gas Generator

    3000W
    Running
    56 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 @25%
h
Running watts by fuel
Shows how output changes across gasoline/propane/natural gas (when available).
Generator Specifications Comparison
SpecificationGenmax GM10500XiTPredator 72899
General
Product type
Generator
Generator
Fuel
Tri-Fuel
Gasoline
InverterYesYes
Parallel capableYesNo
RV readyYesNo
Running watts
Winner: Winner: 7800 W
3000 W
Starting watts
Winner: Winner: 10500 W
3500 W
Noise (lower limit)
74 dB
Winner: Winner: 56 dB
Weight
123.5 lbs
Winner: Winner: 102 lbs
Run time @50% load
Not available—
Not available—
Run time @25% load
Winner: Winner: 13.5 h
11 h
Fuel tank
5.8 gal
Not available—
Fuel gaugeYesNo
Approx. dimensions (L × W × H)
25.2 x 19.8 x 21.3
22.75 x 17.3 x 20
Electrical
Voltage (AC)
120/240
120V
Voltage (DC)
12
Not available—
GFCI outletsNoNo
Covered outletsYesNo
Automatic Voltage RegulationYesNo
THD
≤3% %
Not available—
Engine
Engine
312 cc OHV 4-stroke
Not available—
Alternator
Not available—
Not available—
Starting system
Recoil, Electric, Remote
Not available—
Warranty
Warranty
1 years
Not available—
Power by fuel
GasolineNot available—Not available—
Running watts
7800 W
Not available—
Starting watts
10500 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
13.5 h
Not available—
Natural gasNot available—Not available—
Running watts
6250 W
Not available—
Starting watts
8500 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
Not available—
Not available—
PropaneNot available—Not available—
Running watts
7000 W
Not available—
Starting watts
8500 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
Not available—
Not available—
Other
Data center
Not available—
Not available—
Indicators
true
Not available—
Compliance
EPA, ANSI/PGMA G300-2023
Not available—
Security
Not available—
Not available—
Spark arrestorYesNo
Neutral
Floating
Not available—
UPC
760790248388
Not available—
Core / High-priority specs
Running Watts (Gasoline)
7800
Not available—
Running Watts (Propane)
7000
Not available—
Running Watts (Natural Gas)
6250
Not available—
Starting Watts (Gasoline)
10500
Not available—
Starting Watts (Propane)
8500
Not available—
Starting Watts (Natural Gas)
8500
Not available—
Runtime @ 25% Load (Gasoline)
13.5
Not available—
AC Outlet Types
1x Duplex 120V 20A (5-20R) 1x 120/240V 30A (L14-30R) 1x 120/240V 50A (14-50R)
Not available—
Electrical & power
Frequency
60
Not available—
Engine & construction
Engine Type
312 cc OHV 4-stroke
Not available—
Engine Displacement
312
212
Engine Oil Type
SAE 10W/30
Not available—
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
13.5
Not available—
Safety & compliance
Overload Protection System
Low oil and overload protection
Not available—
Low Oil ProtectionNoYes
Carbon Monoxide MonitoringYesNo
Included equipment
Included Accessories
Funnel, tool kit, key fob, natural gas hose with NPT adapter, propane hose, cover, neutral bonding plug, battery, and wheel kit
Not available—
Additional specs
Summary
The Genmax GM10500XiT is a 7,800-watt tri-fuel inverter generator delivering whole-house backup power and jobsite capability. Its tri-fuel design runs on gasoline, propane, or natural gas, eliminating fuel sourcing constraints during emergencies. The inverter technology maintains THD at 3% or below, making it safe for laptops, medical devices, and smart TVs.
The Predator 72899 is a 3500 Watt Super Quiet Inverter Generator designed for efficient and quiet operation, suitable for various applications including RVs.
  • Most Powerful
    Genmax GM10500XiT
    7800W running
  • Quietest
    Predator 72899
    56 dB
  • Longest Runtime
    h at 50% load
Where to buy
Prices can change. We update these automatically.
Genmax GM10500XiT
Store links
No links yet.
Predator 72899
Store links
No links yet.
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