Skip to content

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 GM1200i
  • Sportsman GEN1000
  • Model GM1200i
    Model GM1200i

    Genmax 1,000W Gas Generator

    1000W
    Running
    58 dB
    Noise
    View details
  • Model GEN1000
    Model GEN1000

    Sportsman 900W Gas Generator

    900W
    Running
    65 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
SpecificationGenmax GM1200iSportsman GEN1000
General
Product type
Generator
Generator
Fuel
Gasoline
Gasoline
InverterYesNo
Parallel capableYesNo
RV readyNoNo
Running watts
Winner: Winner: 1000 W
900 W
Starting watts
Winner: Winner: 1200 W
1000 W
Noise (lower limit)
Winner: Winner: 58 dB
65 dB
Weight
Winner: Winner: 25.3 lbs
38 lbs
Run time @50% load
Winner: Winner: 6.5 h
5 h
Run time @25% load
10 h
Not available
Fuel tank
0.7 gal
0.8 gal
Fuel gaugeNoNo
Approx. dimensions (L × W × H)
16.5 x 9.5 x 15.7
14 x 12 x 12
Electrical
Voltage (AC)
120V 60 Hz
120
Voltage (DC)
5V
Not available
GFCI outletsNoNo
Covered outletsYesNo
Automatic Voltage RegulationYesNo
THD
<1.2% %
Not available
Engine
Engine
57 cc Dinking OHV 4-stroke
72 cc 2-stroke
Alternator
Not available
Not available
Starting system
Recoil
Recoil
Warranty
Warranty
1 years
1 years
Power by fuel
GasolineNot availableNot available
Running watts
1000 W
900 W
Starting watts
1200 W
1000 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
6.5 h
5 h
Run time @25% load
10 h
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 arrestorYesNo
Neutral
Not available
Not available
UPC
768494055271
27077057362
Core / High-priority specs
Running Watts (Gasoline)
1000
900
Starting Watts (Gasoline)
1200
1000
Runtime @ 50% Load (Gasoline)
6.5
5
Runtime @ 25% Load (Gasoline)
10
Not available
AC Outlet Types
1x Duplex 120V 20A (5-20R)
1x 120V 20A (5-20R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
Not available
2-stroke
Engine Displacement
57
72
Engine Oil Type
10W-30
SAE10W-30
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
10
Not available
Runtime @ 50% Load (Gasoline)
6.5
5
Safety & compliance
Overload Protection System
Low oil and overload protection, CO monitoring
Low oil and overload protection
Low Oil ProtectionYesNo
Carbon Monoxide MonitoringYesNo
Included equipment
Fuel Connection Components
Funnel, tool kit, RV adapter, and parallel cables
Not available
Included Accessories
Funnel, tool kit, RV adapter, and parallel cables
Tool kit
Warranty & identification
Commercial Warranty
Not available
1
Additional specs
Summary
The Genmax GM1200i is a 1000-watt gasoline inverter generator built for portability and quiet operation. At 25.3 lbs, it moves easily between job sites, campsites, and storage. The 1200-watt surge capacity handles startup demands for small appliances, power tools, and sensitive electronics.
The Sportsman GEN1000 is a portable generator designed for hunters and campers, offering 1000 surge watts and 900 running watts. It features a 2.0 HP 2-cycle gasoline engine with recoil start and provides a runtime of 5 hours at 50% load.
  • Most Powerful
    Genmax GM1200i
    1000W running
  • Quietest
    Genmax GM1200i
    58 dB
  • Longest Runtime
    Genmax GM1200i
    6.5h at 50% load
Where to buy
Prices can change. We update these automatically.
Genmax GM1200i
Store links
No links yet.
Sportsman GEN1000
Store links
No links yet.
Disclosure: Some links may be affiliate links. Specs and comparisons are never hidden.