3D Printing Info

Printer comparison

ELEGOO Neptune 3 Pro vs QIDI X-Smart 3

Compare hardware, build volume, printing specifications, dated prices and sources.

2 selected · all documented properties

ELEGOO Neptune 3 Pro vs QIDI X-Smart 3 — documented properties and sources
PropertyELEGOO Neptune 3 ProBEDSLINGERQIDI X-Smart 3COREXY
Identity
BrandELEGOOQIDI
ClassBEDSLINGERCOREXY
Identity & Market
Manufacturer & exact marketed model name (verify the exact product identity first)ELEGOO Neptune 3 Pro[1]QIDI X-Smart 3, listed in QIDI navigation as X-Smart3[2][3]
Release date (announcement and actual shipping)Listed on the ELEGOO US store from 11 November 2022 (Shopify publish date)[4]Not published by QIDI on the pages checked (Aug 2026)[2][3]
Street price (USD; dated snapshot per entry)$259.99 on us.elegoo.com, Aug 2026, with the compare-at price also $259.99 - notably more than the newer and far faster Neptune 4 at $219[4][5]$399 on QIDI's official US page, which routes purchases to its AliExpress and Amazon stores; checked Aug 2026[3]
Variants & sibling models — and how to tell them apart (spec-contamination risk)The last Neptune 3 still listed; the 3 Plus and 3 Max are gone from the store's Neptune section. Do not read Neptune 4 figures onto it: the 3 Pro runs Marlin, not Klipper, tops out at 180 mm/s rather than 500, uses a 36-point mesh rather than 121-point, and its nozzle stops at 260 C rather than 300 C. Its machine size, 475 x 445 x 515 mm, is identical to the Neptune 4's, so body dimensions will not tell them apart[1][6][7]Entry model of the 3-series. Unlike the X-Plus 3 and X-Max 3 it has no heated chamber, a 300 °C rather than 350 °C hotend, a brass rather than copper-alloy/hardened-steel nozzle head, and no Ethernet. It shares the Cortex-A53 board with them, so control-board specs must not be read as shared print specs[2][8][9]
Market position: superseded? successor announced?Superseded by the Neptune 4 series and, in ELEGOO's current marketing, by the Centauri line[7]Not documented
Physical & Frame
Build volume X×Y×Z (mm) — advertised vs actually usable225 x 225 x 280 mm; printing platform 235 x 235 mm[1]175 x 180 x 170 mm advertised[2][3]
Machine footprint (mm) & clearance needed (cable/spool overhang)475 x 445 x 515 mm - the same body as the Neptune 4. ELEGOO's maximum size for machine activity is 475 x 580 x 725 mm[1][6]370 x 362 x 397 mm[2]
Net weight (kg)8.1 kg net, 10.15 kg gross[1]10.5 kg[2]
Frame construction & materialCNC-machined aluminium extrusion frame (Neptune family)[6]QIDI publishes no frame-material breakdown for this model[2]
Enclosure: open / enclosed; panel material; door/lidOpen frame, no enclosure[1]No heated chamber. 3DJake's table records "Heated chamber: No"; QIDI does not describe an enclosure for this model[2]
Kinematics & Motion Hardware
Kinematics (bedslinger i3 / CoreXY / other)Cartesian i3 bed-slinger[1]CoreXY[2][3]
Z-axis: leadscrew count & type, sync mechanism, anti-backlashTwo lead screws[1]Not documented
Stepper drivers (exact model e.g. TMC2209; UART/SPI; sensorless homing?)"Silent Drive (All Axes)"; no driver part number published[1]Not documented
Speed & Acceleration
Max print speed (claimed, mm/s)30-180 mm/s, with 60 mm/s given by ELEGOO as the recommended speed - a pre-Klipper machine, and the slowest in this file apart from the OrangeStorm Giga[1]<=500 mm/s (manufacturer claim)[2][3]
Recommended/typical print speed60 mm/s recommended printing speed (manufacturer figure)[1]Not documented
Max acceleration (claimed, mm/s²)Not documented20,000 mm/s2 (manufacturer claim)[3]
Max volumetric flow claimed (mm³/s)Not documented30 mm3/s extruder flow (manufacturer claim)[2][3]
Extruder
Type (direct drive / bowden) & design nameDual-gear direct extruder with 2 fans[1]Direct-drive extruder, single, 1.75 mm filament[2][3]
Hotend & Nozzle
Hotend design (proprietary/standard; quick-swap mechanism?)Brass nozzle, 0.4 mm, titanium-alloy heat break[1]Brass nozzle head. 0.4 mm stock, 0.2/0.6/0.8 mm optional[2][3]
Max nozzle temp claimed AND firmware max temp limit (both values)260 C claimed max nozzle temperature - 40 C below the Neptune 4 series[1][6]<=300 °C claimed[2][3]
Stock nozzle material (brass / hardened steel / plated copper / composite tip)Not documentedBrass[2]
Heated Bed & Surface
Max bed temp claimed AND firmware limit100 C max heated bed temperature at 25 C ambient[1]<=120 °C claimed[2][3]
Bed surface (material, texture, coating), single/double-sidedPEI spring steel sheet[1]Double-sided flexible magnetic RF plate[2]
Leveling & Z-Offset
Auto bed leveling: probe technology (inductive / strain gauge / load cell / touch probe)36-point auto-levelling (the Neptune 4 family moved to 121 points)[1][10]16-point automatic bed levelling per QIDI's US page; probe technology not named[3]
Mesh grid size (probe point count — firmware evidence)Not documented16 points (QIDI's US page). Not verified against firmware[3]
Filament Handling & Detection
Filament runout sensor (type, location)Filament run-out sensor and power-loss recovery[1]Filament detection fitted; type and location not published[2]
Electronics & Power
Host computer (SoC, RAM, storage) if firmware runs on embedded LinuxNot documentedCortex-A53 64-bit at 1.5 GHz, 1 GB DDR3, 8 GB eMMC[2]
Input voltage (110/220 V, switch or auto)Not documented100-240 VAC, 50/60 Hz[2]
Total rated power draw300 W rated power, 24 V output[1]350 W rated[2]
Firmware & Openness
Firmware base & current version (Klipper fork / Marlin fork / proprietary)Marlin - ELEGOO names the system "Marlin" for the Neptune 3 Pro, against "Klipper" for the whole Neptune 4 family[1][10]Klipper[3]
Connectivity, UI & Camera
Display: size, type, touch?4.3-inch colour capacitive touch screen[1]4.3-inch touchscreen[3]
On-device UI capabilities (model preview, per-object controls, etc.)Colour capacitive touch UI; ElegooSlicer recommended, Orca and Cura supported[1]Not documented
WiFi (band/standard), Ethernet, USB ports, SD/flash-driveTF (microSD) card and USB cable only - no LAN and no Wi-Fi[1]Wi-Fi and USB. No Ethernet listed for this model[2][3]
Materials Support
Officially supported filament listPLA, TPU, PETG, ABS, ASA - no Nylon, unlike the Neptune 4 family[1][6]Not documented
Noise & Power Consumption
Noise: claimed dB and independently measured dB (distance/method)Operating sound published as 48 dB or less - a manufacturer figure with no distance or method stated[1]Not documented
Reliability, Support & Ecosystem
Warranty length & support reputation (evidence, not vibes)12 months on brand-new machines and parts, but ELEGOO's own table excludes a long list of parts from that: PEI plate / build plate / nozzle kit / PTFE tube / heater / thermistor / hot end / packaging / manual / tools carry no warranty at all, and the extruder, extruder kit and printhead kit get 6 months. Certified pre-owned machines carry no warranty[11]1-year coverage (QIDI standard store terms)[12]

Manufacturer claims, independent measurements, packages and test conditions retain their source wording. FDM linear speed and resin vertical speed use different units and are not directly comparable. Unknown values are marked “Not documented”. Prices and source dates remain historical snapshots; check the linked guide for product details. Differences highlight text, not a universal winner.

Sources for this comparison

  1. ELEGOO compare-products page, which embeds the full per-model specification JSON for every Neptune, Centauri and OrangeStorm machine us.elegoo.com · 2026-08 · vendor
  2. QIDI Tech X-Smart 3 technical data table 3djake.com · 2026-08 · vendor
  3. QIDI X-Smart 3 official US page qidiusa.com · 2026-08 · vendor
  4. ELEGOO Neptune 3 Pro Shopify product JSON (price and store publish date) us.elegoo.com · 2026-08 · vendor
  5. ELEGOO Neptune 4 Shopify product JSON (variant prices and store publish date) us.elegoo.com · 2026-08 · vendor
  6. ELEGOO Neptune 4 product page (Specification table) us.elegoo.com · 2026-08 · vendor
  7. ELEGOO US store 3D printers collection (current line-up, Aug 2026) us.elegoo.com · 2026-08 · vendor
  8. QIDI Tech X-Plus 3 technical data table 3djake.com · 2026-08 · vendor
  9. QIDI Tech X-Max 3 technical data table 3djake.com · 2026-08 · vendor
  10. ELEGOO Neptune 4 Plus product page (full specification table) us.elegoo.com · 2026-08 · vendor
  11. ELEGOO Refund & Warranty policy (warranty period table) us.elegoo.com · 2026-08 · vendor
  12. QIDI Max4 product page (US store) us.qidi3d.com · 2026-08 · vendor