Elegoo Mars 4 Ultra vs QIDI X-CF Pro
Head-to-head 3D printer comparison, 2026
Comparing FDM to resin? The Elegoo Mars 4 Ultra ($199, RESIN) and QIDI X-CF Pro ($599, FDM) use fundamentally different technologies. FDM melts filament layer by layer; resin cures liquid with UV light. Here's how they stack up.
Our Verdict
The Elegoo Mars 4 Ultra takes the crown with 7.8/10 vs 6.8/10. It pulls ahead in Value, Beginner Friendliness, Speed. The QIDI X-CF Pro still puts up a fight in Reliability.
Score Breakdown
Specifications
| Spec | Elegoo Mars 4 Ultra | QIDI X-CF Pro |
|---|---|---|
| Price | $199 | $599 |
| Type | RESIN | FDM |
| Build Volume | 153 x 77 x 165 mm | 300 x 250 x 300 mm |
| Print Speed | 100 mm/s | 100 mm/s |
| Min Resolution | 0.01 mm | 0.05 mm |
| Weight | 6.8 kg | 21.5 kg |
| Overall Score | 7.8/10 | 6.8/10 |
Pros & Cons
Elegoo Mars 4 Ultra
+9K resolution is a meaningful jump from 7K: finer surface texture, sharper edges on small parts
+Tilt release means FEP films last longer; $50 less per year in consumables is real money
+Built-in air purifier takes the edge off the smell without requiring an external solution
+WiFi monitoring means you can start a print and check it from another room
−153x77mm plate is tight for anything larger than small character models
−Still needs a wash and cure station: budget $50-80 extra
−Resin workflow is messier and slower to start than FDM
QIDI X-CF Pro
+One of the few sub-$600 printers with a genuine 60°C heated enclosure for PA-CF and PPS-CF
+Hardened steel nozzle ships standard — no upgrade needed for carbon fiber out of the box
+HEPA + active carbon filtration — safe for indoor use with engineering filaments
+Linear rails on all axes mean less positional drift on long industrial prints
+Proven track record in light manufacturing since 2021
−60-100mm/s print speed is 6x slower than modern CoreXY machines — long print times
−2021 vintage hardware; newer QIDI models (X-Plus 4, Tech Max) offer more for similar money
−Dual extruder adds mechanical complexity without multi-color usefulness for most users
−21.5kg — not portable, bench-only
−Slicer integration (Simplify3D profiles) trails modern Bambu/Creality ecosystems
Who Should Buy Which?
Choose the Elegoo Mars 4 Ultra if you want:
- A great printer for miniatures
- A great printer for resin
- A great printer for budget
- 9K mono LCD
- Tilt release
- WiFi
Choose the QIDI X-CF Pro if you want:
- A great printer for engineering
- A great printer for enclosed
- A great printer for professional
- A great printer for carbon-fiber
- Dual Z-axis for precise layer alignment
- High-temp enclosure (up to 60°C chamber)
- Hardened steel nozzle (CF-ready from factory)
Frequently Asked Questions
Is the Elegoo Mars 4 Ultra better than the QIDI X-CF Pro?
By the numbers, the Elegoo Mars 4 Ultra scores higher (7.8/10). But "better" depends on your use case, the QIDI X-CF Pro may be the smarter buy if you need engineering.
Which is better for beginners, Elegoo Mars 4 Ultra or QIDI X-CF Pro?
The Elegoo Mars 4 Ultra is more beginner-friendly (7/10 vs 5/10) with easier setup and a gentler learning curve.
Is the QIDI X-CF Pro worth $400 more than the Elegoo Mars 4 Ultra?
The Elegoo Mars 4 Ultra actually scores higher (7.8/10) despite costing $400 less. The QIDI X-CF Pro only makes sense if you specifically need engineering.
What's the main difference between Elegoo Mars 4 Ultra and QIDI X-CF Pro?
Technology: the Elegoo Mars 4 Ultra is RESIN (filament) and the QIDI X-CF Pro is FDM (resin). FDM prints bigger functional parts; resin delivers finer surface detail.