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.

  • Generac #7153 GP3300i
  • Genmax GM2000i
  • Model #7153 GP3300i
    Model #7153 GP3300i

    Generac 2,500W Gas Generator

    2500W
    Running
    0 dB
    Noise
    View details
  • Model GM2000i
    Model GM2000i

    Genmax 1,600W Gas Generator

    1600W
    Running
    58 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
SpecificationGenerac #7153 GP3300iGenmax GM2000i
General
Product type
Generator
Generator
Fuel
Gasoline
Gasoline
InverterYesYes
Parallel capableYesYes
RV readyNoNo
Running watts
Winner: Winner: 2500 W
1600 W
Starting watts
Winner: Winner: 3300 W
2000 W
Noise (lower limit)
0 dB
Winner: Winner: 58 dB
Weight
59.5 lbs
Winner: Winner: 34.2 lbs
Run time @50% load
4.5 h
Winner: Winner: 8 h
Run time @25% load
7 h
10 h
Fuel tank
1.06 gal
1.1 gal
Fuel gaugeNoNo
Approx. dimensions (L × W × H)
22.2 x 13.3 x 18.4
18.7 x 10.6 x 15.9
Electrical
Voltage (AC)
120
120
Voltage (DC)
5
5
GFCI outletsNoNo
Covered outletsNoYes
Automatic Voltage RegulationYesYes
THD
<3% %
≤3% %
Engine
Engine
Generac OHV 149 cc 4-stroke
79.7 cc Dinking OHV 4-stroke
Alternator
Not available
Not available
Starting system
Recoil
Recoil
Warranty
Warranty
3 years
1 years
Power by fuel
GasolineNot availableNot available
Running watts
2500 W
1600 W
Starting watts
3300 W
2000 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
4.5 h
8 h
Run time @25% load
7 h
10 h
Other
Data center
Not available
Not available
Indicators
true
true
Compliance
EPA, ANSI/PGMA G300-2023
EPA, ANSI/PGMA G300-2023
Security
Not available
Not available
Spark arrestorYesYes
Neutral
Not available
Floating
UPC
696471104011
768494055363
Core / High-priority specs
Running Watts (Gasoline)
2500
1600
Starting Watts (Gasoline)
3300
2000
Runtime @ 50% Load (Gasoline)
4.5
8
Runtime @ 25% Load (Gasoline)
7
10
AC Outlet Types
1x Duplex 120V 20A (5-20R) 1x 120V 30A (L5-30R)
1x Duplex 120V 20A (5-20R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
OHV 4-stroke
OHV 4-stroke
Engine Displacement
149
79.7
Engine Oil Type
10W-30 / SAE 30
10W-30
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
7
10
Runtime @ 50% Load (Gasoline)
4.5
8
Safety & compliance
Overload Protection System
Not available
Low oil and overload protection
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringYesYes
Included equipment
Starting Components
Recoil
Not available
Included Accessories
Not available
Funnel and Tool Kit
Warranty & identification
Commercial Warranty
Not available
1
Part Number
71533
Not available
Additional specs
Summary
The Generac GP3300i is a 2,500-watt inverter generator built for users who need portable, clean power without the weight penalty. At 59.5 lbs, it moves easily between campsites, tailgates, and home backup scenarios. The 3,300-watt starting capacity handles motor-driven equipment, while sub-3% THD protects laptops and phones from voltage spikes.
The Genmax GM2000i is a 1,600-watt gasoline inverter generator built for portable use. Its 2,000 starting watts handle brief motor surges, while the 1,600 running watts sustain household devices, power tools, and small appliances. At 34.2 lbs, it moves easily between campsites, job sites, and storage.
  • Most Powerful
    Generac #7153 GP3300i
    2500W running
  • Quietest
    Genmax GM2000i
    58 dB
  • Longest Runtime
    Genmax GM2000i
    8h at 50% load
Where to buy
Prices can change. We update these automatically.
Generac #7153 GP3300i
Store links
No links yet.
Genmax GM2000i
Store links
No links yet.
Disclosure: Some links may be affiliate links. Specs and comparisons are never hidden.