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 #7678 GP3600
- Ryobi RY904500
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).
| Specification | Generac #7678 GP3600 | Ryobi RY904500 |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Gasoline | Gasoline |
| Inverter | No | No |
| Parallel capable | No | No |
| RV ready | No | Yes |
| Running watts | Winner: Winner: 3600 W | Winner: Winner: 3600 W |
| Starting watts | Winner: Winner: 4500 W | Winner: Winner: 4500 W |
| Noise (lower limit) | 0 dB | Winner: Winner: 82 dB |
| Weight | Winner: Winner: 105 lbs | 115 lbs |
| Run time @50% load | 9.3 h | Winner: Winner: 10 h |
| Run time @25% load | Not available | Not available |
| Fuel tank | 3.7 gal | 4 gal |
| Fuel gauge | Yes | No |
| Approx. dimensions (L × W × H) | 24 x 22.5 x 21.3 | 24 x 26 x 20 |
| Electrical | ||
| Voltage (AC) | 120 | 120 |
| Voltage (DC) | Not available | Not available |
| GFCI outlets | No | No |
| Covered outlets | Yes | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | Not available | Not available |
| Engine | ||
| Engine | Generac OHV 4-stroke 212 | 212 cc OHV 4-stroke |
| Alternator | Not available | Not available |
| Starting system | Recoil | Recoil |
| Warranty | ||
| Warranty | 3 years | 3 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 3600 W | 3600 W |
| Starting watts | 4500 W | 4500 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 | 9.3 h | 10 h |
| Run time @25% load | Not available | Not available |
| Other | ||
| Data center | Not available | Not available |
| Indicators | false | false |
| Compliance | CARB | EPA |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | Not available | Not available |
| UPC | 696471074581 | 46396056023 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 3600 | 3600 |
| Starting Watts (Gasoline) | 4500 | 4500 |
| Runtime @ 50% Load (Gasoline) | 9.3 | 10 |
| AC Outlet Types | 2x Duplex 120V 20A (5-20R) 1x 120V 30A (L5-30R) | 2x Duplex 120V 20A (5-20R) 1x 120V 30A (TT-30R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | OHV 4-stroke | OHV 4-stroke |
| Engine Displacement | 212 | 212 |
| Engine Oil Type | 10W-30 / SAE 30 | Not available |
| Runtime & fuel system | ||
| Runtime @ 50% Load (Gasoline) | 9.3 | 10 |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection | Low oil and overload protection |
| Low Oil Protection | Yes | No |
| Carbon Monoxide Monitoring | No | Yes |
| Included equipment | ||
| Mobility Components | Yes | Not available |
| Starting Components | Oil, funnel, tool kit, and wheel kit | Not available |
| Included Accessories | Oil, funnel, tool kit, and wheel kit | Oil and wheel kit |
| Warranty & identification | ||
| Part Number | 7678 | Not available |
| Additional specs | ||
| Summary | The Generac GP3600 (#7678) is a 3600-watt gasoline generator built for homeowners and job sites needing reliable backup or portable power. Its 4500-watt peak capacity handles starting surges for tools and appliances, while the 3.7-gallon fuel tank delivers 9.3 hours of runtime at half load. Automatic voltage regulation protects sensitive electronics, and a three-year warranty covers ownership support. | The Ryobi RY904500 is a 3600-watt portable gasoline generator, delivering 4500 starting watts. It features a 212cc OHV engine, a 4-gallon fuel tank providing up to 10 hours of runtime at 50% load, and is RV-ready with a 120V 30A RV outlet. |
- Most PowerfulGenerac #7678 GP36003600W running
- QuietestRyobi RY90450082 dB
- Longest RuntimeRyobi RY90450010h at 50% load
Where to buy
Prices can change. We update these automatically.
Generac #7678 GP3600
Store links
No links yet.
Ryobi RY904500
Store links
No links yet.
Disclosure: Some links may be affiliate links. Specs and comparisons are never hidden.