Elegoo Mars 4 vs QIDI X-Smart 3
Head-to-head 3D printer comparison — 2026
Comparing FDM to resin? The Elegoo Mars 4 ($149, RESIN) and QIDI X-Smart 3 ($349, 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 QIDI X-Smart 3 takes the crown with 8/10 vs 7.2/10. It pulls ahead in Beginner Friendliness, Speed, Reliability. That said, the Elegoo Mars 4 saves you $200 and wins on Value.
Score Breakdown
Specifications
| Spec | Elegoo Mars 4 | QIDI X-Smart 3 |
|---|---|---|
| Price | $149 | $349 |
| Type | RESIN | FDM |
| Build Volume | 153 x 77 x 165 mm | 175 x 175 x 165 mm |
| Print Speed | 80 mm/s | 600 mm/s |
| Min Resolution | 0.02 mm | 0.05 mm |
| Weight | 6.2 kg | 9.5 kg |
| Overall Score | 7.2/10 | 8/10 |
Pros & Cons
Elegoo Mars 4
+Cheapest Elegoo Mars with WiFi
+7K resolution still excellent for minis
+Small footprint
+Known brand reliability
−No tilt release (higher FEP wear)
−Slower than Ultra variants
−7K less sharp than 9K/12K siblings
QIDI X-Smart 3
+Fully enclosed in a compact footprint
+Chamber heating for better layer adhesion
+Good software experience
+Fast CoreXY
−Small 175mm build volume
−QIDI ecosystem smaller than Bambu
−175mm limits large prints
Who Should Buy Which?
Choose the Elegoo Mars 4 if you want:
- A great printer for budget
- A great printer for resin
- A great printer for miniatures
- 7K mono LCD
- WiFi
- USB
Choose the QIDI X-Smart 3 if you want:
- A great printer for compact
- A great printer for enclosed
- A great printer for beginners
- Enclosed CoreXY
- Chamber heating (35C)
- Auto bed leveling
Frequently Asked Questions
Is the Elegoo Mars 4 better than the QIDI X-Smart 3?
By the numbers, the QIDI X-Smart 3 scores higher (8/10). But "better" depends on your use case — the Elegoo Mars 4 may be the smarter buy if you need budget.
Which is better for beginners, Elegoo Mars 4 or QIDI X-Smart 3?
The QIDI X-Smart 3 is more beginner-friendly (8/10 vs 6/10) with easier setup and a gentler learning curve.
Is the QIDI X-Smart 3 worth $200 more than the Elegoo Mars 4?
The QIDI X-Smart 3 scores higher overall (8/10 vs 7.2/10). The extra $200 gets you fully enclosed in a compact footprint.
What's the main difference between Elegoo Mars 4 and QIDI X-Smart 3?
Technology: the Elegoo Mars 4 is RESIN (filament) and the QIDI X-Smart 3 is FDM (resin). FDM prints bigger functional parts; resin delivers finer surface detail.