ELEGOO Neptune 4 vs ELEGOO Neptune 4 Pro

ELEGOO Neptune 4 vs ELEGOO Neptune 4 Pro looks like the simplest twenty pounds a first-time buyer ever spends. Then you set ELEGOO's two parameter tables side by side and find they are, very nearly, the same table.

Both print a 225 × 225 × 265 mm volume onto a 235 × 235 mm PEI plate, both reach 300 °C at the nozzle over a bed that goes to 110 °C, both are rated from 30 to 500 mm/s at up to 20,000 mm/s², and both occupy the same 475 × 445 × 515 mm of desk. Across every row ELEGOO publishes, one number differs: net weight, 8.3 kg against 8.9 kg.

The real difference is not on the sheet. It is a bed divided into two independently controlled heating zones — and, far less advertised, a printhead the dearer machine expects you to fit yourself.

Specification	1 ELEGOO Neptune 4 Pro The default buy	2 ELEGOO Neptune 4 The budget entry
Best for	Most buyers, and anyone printing small parts	A fixed budget, and a simpler first evening
Key strength	Segmented bed: a 100 W centre zone heats alone for small models	Cheapest route onto the platform, printhead already fitted
Main limitation	Printhead arrives detached; manual adds a lubrication duty	Whole bed heats whatever the model size
Segmented heatbed	●Yes — 100 W centre plus 150 W outer, 120 × 120 mm centre zone	Not offered
Printhead in the box	Listed separately — you fit it	Arrives fitted
Motion guidance (ELEGOO's wording)	Wear-resistant POM V-guide wheels	Wear-resistant POM V-guide wheels
Build volume	225 × 225 × 265 mm	225 × 225 × 265 mm
Max nozzle / bed	300 °C / 110 °C	300 °C / 110 °C
Speed / acceleration	30–500 mm/s, 20,000 mm/s²	30–500 mm/s, 20,000 mm/s²
Levelling	121-point mesh, or 36, plus knobs under the bed	121-point mesh, or 36, plus knobs under the bed
Extruder	Dual-gear direct drive, 5.2:1	Dual-gear direct drive, 5.2:1
Connections	USB drive and LAN — no Wi-Fi listed	USB drive and LAN — no Wi-Fi listed
Net weight	8.9 kg	8.3 kg
Footprint	475 × 445 × 515 mm	475 × 445 × 515 mm
Noise	ELEGOO claims below 50 dB — identical wording for both	ELEGOO claims below 50 dB — identical wording for both
UK warranty	12 months, set for the Neptune 4 family	12 months, set for the Neptune 4 family
UK price band	£180–£215	£165–£215
UK availability	ELEGOO UK and one authorised UK stockist	ELEGOO UK

How this comparison was put together

No printing was done for this page. The ELEGOO Neptune 4 compared with the ELEGOO Neptune 4 Pro is desk research, and saying so matters, because the conclusion contradicts most of what is written about the pair.

Four ELEGOO documents carry it: the two user manuals shipped with the machines, which print their specifications under identical headings so the figures line up row for row, and the two parameter tables on ELEGOO's own UK store. Where ELEGOO publishes nothing, this page gives nothing, and competitor pages were read only to find what buyers are not being told.

The three differences that are real

Three rows separate these machines in ELEGOO's documents. One favours the Pro. Two favour the cheaper printer, which is not how this comparison is usually told.

The segmented heatbed. The Pro's reason to exist. Rather than one element under the whole plate, the bed splits into a 120 × 120 mm centre zone rated at 100 W and an outer zone rated at 150 W; ELEGOO's slicer measures the model and leaves the outer zone off if the part fits the centre square. The zones can also be toggled by hand.

Against the 235 × 235 mm plate that centre zone is roughly a quarter of the usable area — where a bracket, a phone stand or a set of miniatures all land. For those jobs the Pro heats less aluminium: a shorter wait before the first layer, less electricity held at 110 °C after it. Modest, real, and the single thing the extra money buys.

The weight. 8.9 kg against 8.3 kg — nobody's deciding factor, but proof the chassis is the same casting, since ELEGOO publishes identical dimensions for both.

The printhead. Here the cheaper machine wins outright, and almost nobody mentions it. ELEGOO's box list for the Pro includes the printhead as a separate item, fitted with two PM3 × 16 screws through the strain-relief bracket and four PM3 × 8 screws. The standard machine's list has no printhead on it — it arrives attached. The model sold as better-finished asks more of you before it prints.

The specification table ELEGOO publishes twice

A comparison earns its keep by being honest about what is not a difference. Here, that is almost everything.

Every part that touches the plastic is shared: a dual-gear direct-drive extruder at 5.2:1 — motor riding on the moving head, which is what makes flexible filament practical this cheap — a copper-titanium bi-metal throat and an extended hot end behind a 0.4 mm nozzle, cooled by the same two 4015 fans flanking the head and four 4020 behind it. Both claim ±0.1 mm accuracy — a manufacturer figure, not a measured tolerance.

So is everything around it: a pre-installed ELEGOO build of Klipper on an ARM 64-bit quad-core processor with pressure advance and input shaping, the latter being what the 500 mm/s rating rests on; a 121-point mesh over hand-twist knobs; files by USB stick or wired LAN, with no Wi-Fi in ELEGOO's row; and the same filament list, PLA through nylon, with the same advice to pair ABS and ASA with an enclosure neither machine has.

One correction while the tables are open. A bed figure of 100 °C for the Pro is in wide circulation and traces to a duplicate ELEGOO product page. ELEGOO's Pro manual, its main product page and its UK store all say 110 °C, the same as the standard machine.

The upgrade that is not in ELEGOO's specification

Research Neptune 4 or Neptune 4 Pro anywhere else and you meet a confident claim: the standard machine runs on plastic rails, the Pro on all-metal linear rails with ball bearings. It is repeated across comparison sites, the most-cited of which admits it has no manufacturer source.

ELEGOO's own pages do not say it. Both carry the same sentence, word for word: silent drivers on every axis, which the company says brings noise below 50 dB, moving on wear-resistant POM V-guide wheels. POM is a self-lubricating engineering plastic, so that describes plastic wheels on extrusion — on both machines. No ELEGOO page reached mentions a metal rail, and this page claims none.

What ELEGOO does document is a pair of asymmetric footnotes. The Pro's manual adds a maintenance instruction the standard machine's lacks: its X and Y moving parts are described as optical axes needing regular lubrication. The Neptune 4's manual carries a note the Pro's omits, telling owners to slacken the hexagonal isolation columns under the platform if the bed feels shaky, and mentioning the pulleys either side of the gantry.

That is more useful than the rail story: ELEGOO writes about the cheaper machine as a thing with pulleys to adjust and the Pro as a thing with shafts to oil. Suggestive of some hardware difference in X and Y, and as far as the evidence goes — and note which way the burden falls, since a lubrication schedule is a chore, not a benefit. Do not pay the premium expecting a mechanically better printer. Pay it for the bed.

Living with either one, according to owners

The two share the controller, firmware, extruder, fans, levelling and bed hardware, so the ownership record barely distinguishes them. Everything below was researched from community threads, forums and owner write-ups, and none of it is a test result.

Software draws the loudest complaint, and it belongs to both equally. Owners repeatedly describe ELEGOO's own build of Klipper as lagging behind the open-source project and not something they can update themselves, which is why a community firmware project exists for the whole Neptune 4 series — though several owners also report the stock software doing everything they need. That project covers every Neptune 4 variant, and its existence is the point rather than a recommendation.

Noise sits awkwardly against the brochure, where ELEGOO claims below 50 dB for both in identical wording — a claim about stepper drivers, not a working printer. A recurring theme among owners is that the cooling fans, not the motors, are the loudest part of these printers, and quieter replacement fans and printed shrouds are among the commonest early modifications. With the same six fans on both, neither is the quieter buy.

First layers come third, because the mesh assumes a bed that stays where it was put. Several owners describe the hand-twist levelling knobs under the bed working loose over time, and printed knob locks are a common fix, although plenty of owners never run into it. Both use the same knobs.

On output the evidence refuses to settle. Accounts of print quality straight out of the box split in two directions: some owners report months of dependable printing on the supplied profiles, while others describe having to retune stringing and layer-consistency settings before results became reliable. That split runs through both models rather than separating them. And no repeating pattern emerged about the segmented heatbed itself, for or against — the case for it rests on published figures, not experience.

What each one costs to run in the UK

Start with what cannot be done. ELEGOO publishes no total wattage for either machine: neither manual states a rated power, giving only the mains input and the 24 V output, and neither UK table carries a power row. Any site comparing them on total consumption is estimating without saying so.

What ELEGOO does publish is the Pro's bed — a 100 W centre zone and a 150 W outer zone, 250 W together. On a bed-slinger the heated bed is the largest sustained load, so it is the right number to reason from.

The sums, as an estimate rather than a measurement. Take the Ofgem price cap unit rate, about 26p per kWh for a typical direct debit customer in England, Scotland and Wales. Held continuously, both zones would draw 2.5 kWh over a ten-hour print, roughly 66p of electricity; the centre zone alone 1 kWh, about 26p. Across a hundred hours of printing in a month, the difference between something like £6.60 and £2.60.

Three caveats. A heater wattage is a ceiling, not a draw — once the plate reaches 110 °C the element cycles rather than running flat out, so real figures land well under both. The motors, board, fans and hot end are extra and unquantified. And the saving only appears on models that fit the 120 × 120 mm centre square; print plate-filling parts and the Pro heats everything too.

So the bed is worth a few pounds a month on small parts and nothing on large ones, plausibly repaying the premium over a couple of years. Filament, the real running cost, is identical.

Four Neptune 4 boxes, and the one you did not mean to order

ELEGOO sells four machines in this family — Neptune 4, 4 Pro, 4 Plus and 4 Max — all current, in stock and priced in sterling on its own UK store. Only the first two are here; the Plus and Max are bigger printers at bigger prices, different machines rather than trim levels, since the pair on this page both stop at 225 × 225 × 265 mm.

Two traps sit alongside them. Bundles come first: ELEGOO lists filament starter and all-in-one kits under names that read almost identically to the bare printers, at prices between the two machines here — so it is possible to pay Pro money for a standard Neptune 4 with filament attached. Pre-owned stock is the second: ELEGOO sells refurbished Neptune units through the same store, and its own warranty table gives them no warranty at all. On a machine whose nozzle kit, plate and hot end are already excluded when new, that is a real gamble.

If none of the four suits, the best FDM printers roundup covers the brackets either side.

UK price, availability, warranty and support

ELEGOO Neptune 4 versus ELEGOO Neptune 4 Pro in the UK has a different shape from the comparison Americans are reading. On the day of writing the standard machine sat in the £165–£215 band and the Pro in the £180–£215 band — overlapping, because both prices observed were promotional.

One observation matters more than the bands: that day, the Pro at an authorised UK stockist was cheaper than the standard Neptune 4 was at ELEGOO's own UK store. The premium this comparison is supposed to be about had inverted.

Where to buy, and what was in stock

Both were in stock and priced in sterling on ELEGOO's own UK store, which ships across the UK and the Isle of Man. The Pro has a second route, in stock at an authorised UK retailer; for the standard machine no listing was confirmed there, so it has one UK source. Amazon.co.uk was not checked, as automated access is blocked. Neither machine is run-out stock.

Warranty, support and spares

Warranty is identical, and not by coincidence: ELEGOO sets it for the Neptune 4 family rather than per model. Twelve months on the machine from the date the original order was received, the extruder and printhead kit limited to six, and the PEI platform, build plate, nozzle kit, PTFE tube, heater, thermistor and hot end treated as consumables with no cover at all — a list worth reading twice, since it makes the hot end a wear part rather than a warranted component.

Support is the same route either way. Reports on ELEGOO's support run both ways: many owners describe replacement parts arriving quickly and without much argument, while others describe slow first replies and difficulty reaching a person. Spares are shared across the series, so nozzle kits and plates bought for one fit the other. If both machines land above your budget, the best budget 3D printers roundup covers the tier below.

Which one to buy

ELEGOO Neptune 4 Pro vs ELEGOO Neptune 4 turns on one question, and it is not budget: how big are the things you print?

Buy the Pro if most of what you print would fit a 120 × 120 mm square — brackets, fittings, miniatures, spare parts — and you would rather heat a quarter of the bed than all of it, or if it is quoted within a few pounds of the standard machine, as it was on the day of writing.

Skip the Pro if you print large, plate-filling parts, where the segmented bed does nothing, or would rather not begin ownership by bolting a printhead onto a gantry.

Buy the Neptune 4 if the budget is genuinely fixed, or you want it printing with the least assembly — it arrives with the printhead attached, which the Pro does not. Nothing about it is second-rate where it counts: the extruder, hot end, mesh levelling and 300 °C ceiling are the Pro's.

Skip the Neptune 4 if the Pro sits in the same price band, which in Britain it often does — you would be declining a free upgrade. If neither suits, the best FDM printers roundup is a better starting point.

How this article was researched

This comparison is research-based: no printing, measurement or photography was carried out, and nothing here is a test result. Specifications come from ELEGOO's own documents for the two named standard variants — neither the Plus, the Max, a bundle nor a pre-owned unit. The Pro's manual was read through a mirror after ELEGOO's own download path for it could not be resolved; every value it shares with ELEGOO's UK table matched exactly, which is what confirms it. Owner-reported patterns were researched from community threads, forums and owner write-ups, summarised in our own words and labelled wherever they appear; no review is quoted and no rating reproduced.

Three gaps are left open rather than filled: no total wattage is published for either printer, no bed wattage at all for the standard machine, and no statement of what the X and Y axes ride on beyond one guide-wheel sentence applied to both. Prices and stock were checked on 2 October 2026 and given as bands.