Elegoo Neptune 4 Max vs Elegoo Neptune 4 Plus
Technical comparison · Fused filament fabrication (FFF/FDM)
Same Klipper firmware, same declared speed, neither with an enclosed chamber: the difference is size. The Neptune 4 Max has a 420×420 mm bed and costs €549, the 4 Plus has 320×320 mm and costs around €350.
| Parameter | ||
|---|---|---|
| Identity | ||
| Launch year | 2023 | 2023 |
| Use tier | F2 — Intermediate | F2 — Intermediate |
| Price | ||
| Price (€) | 549 € | ~300–400 € |
| Universal specs | ||
| Dimensions (W×D×H) (cm) | 65.8 × 63.2 × 74 cm | 53.3 × 51.7 × 63.8 cm |
| Weight (kg) | 18.1 kg | 14.4 kg |
| Work area (mm) | 420 × 420 mm | 320 × 320 mm |
| Z-axis height (mm) | 480 mm | 385 mm |
| Maximum speed | 500 mm/s | 500 mm/s |
| Declared precision | 0.1 mm | 0.1 mm |
| Category specs | ||
| Footprint X×Y (short side) (mm) | 420 mm | 320 mm |
| Build height Z (mm) | 480 mm | 385 mm |
| Kinematics | Cartesian | Cartesian |
| Max nozzle temperature (°C) | 300 °C | 300 °C |
| Max bed temperature (°C) | 85 °C | 110 °C |
| Max print speed (mm/s) | 500 mm/s | 500 mm/s |
| Enclosed chamber | No | No |
| Filament sensor | Yes | Yes |
| Auto bed leveling | Mesh | Mesh |
| Standard nozzle diameter (mm) | 0.4 mm | 0.4 mm |
| Multi-extruder | No | No |
| Native Klipper | Yes | Yes |
| Input shaper | Yes | Yes |
| Multicolor printing | No | No |
| Multicolor requires accessory | No | No |
| Max colors | 1 | 1 |
| Ecosystem | ||
| Cloud dependency | No | No |
| Software notes | The system relies on an open ecosystem thanks to the motherboard with pre-installed Klipper. Users can manage the machine both through the 4.3-inch capacitive touchscreen interface and via local network using the integrated web interface (Fluidd). Elegoo provides its own customized version of the Cura slicer, but the printer remains fully compatible with most third-party slicers such as PrusaSlicer, OrcaSlicer, and Simplify3D. Native support for Wi-Fi and LAN connectivity facilitates sending and monitoring G-code files without the need for physical media. | The printer operates with Klipper firmware pre-installed on a 64-bit ARM processor, enabling advanced standard features like input shaping and pressure advance. The user interface is managed via a removable capacitive touchscreen and a dedicated web interface (Fluidd or Mainsail) for remote control and monitoring via Wi-Fi or LAN connection. For file preparation, the machine is compatible with major slicers on the market, including Elegoo Cura (bundled by the manufacturer), UltiMaker Cura, PrusaSlicer, and OrcaSlicer. |
The differences that matter
- Bed 420×420 mm vs 320×320 mm → a 40 cm wide part prints whole only on the Neptune 4 Max.
- Height 480 mm vs 385 mm → objects taller than 38 cm only on the Max.
- Bed at 85 °C vs 110 °C → with materials that want a very hot bed the 4 Plus has more headroom.
- Around €200 apart → you pay for volume, not for speed or firmware, which are the same.
Which one to choose
Choose Neptune 4 Max if…
For parts that do not fit on the 4 Plus: a 420×420 mm bed and up to 480 mm of height against 320×320 and 385. It costs around €200 more, the footprint grows to about 66×63 cm and the bed stops at 85 °C (manufacturer's declared value).
Choose Neptune 4 Plus if…
For work within 320×320 mm at around €200 less. The bed reaches 110 °C and the machine takes up about 53×52 cm. You give up 10 cm of width and nearly 10 cm of height.
Where to buy
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Filaments for these printers
The most chosen spools among the materials both printers can print according to their specifications.
- ELEGOO PLA PLA1.75 mm1 kg Check the price on Amazon →
- Bambu Lab PLA PLA1.75 mm1 kg Check the price on Amazon →
- SUNLU PETG (Polyethylene Terephthalate Glycol) PETG (Polyethylene Terephthalate Glycol)1.75 mm1 kg Check the price on Amazon →
- SUNLU PLA PLA1.75 mm1 kg Check the price on Amazon →
- OVERTURE PETG (Polyethylene Terephthalate Glycol) PETG (Polyethylene Terephthalate Glycol)High speed1.75 mm1 kg Check the price on Amazon →
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