Elegoo’s Mars line built its reputation as the default first resin printer, and the 2026 refresh splits that reputation into two tiers instead of one. The base Mars 5 keeps the price low and the resolution still genuinely sharp; the Ultra adds the speed and automation Elegoo now reserves for its higher tier. Here’s what $165 actually buys, and when the extra $100 for the Ultra is worth spending instead.
Mars 5 by the numbers
- 35 × 35 μm — the base Mars 5’s 4K LCD XY resolution (4098 × 2560 pixels), per Elegoo’s own spec sheet — nearly double the pixel size of the Ultra’s 9K panel, but still finer than any FDM nozzle.
- 143.43 × 89.6 × 150 mm — the build volume, smaller than the Ultra’s 153 × 77 × 165 mm vat.
- 70 mm/h — the rated maximum print speed, less than half the Ultra’s 150 mm/h tilt-release rating.
- 0.01–0.2 mm — supported layer thickness, with 0.02 mm Z-axis accuracy per Elegoo’s listing.
- ~$165 — the price on Elegoo’s US store, about $100 less than the Mars 5 Ultra’s $269.
Mars 5 vs Mars 5 Ultra at a glance
| Spec | Mars 5 (base) | Mars 5 Ultra |
|---|---|---|
| Resolution | 4K (4098 × 2560) | 9K |
| XY resolution | 35 μm | 18 μm |
| LCD size | 6.6-inch | 7-inch |
| Build volume | 143.43 × 89.6 × 150 mm | 153 × 77 × 165 mm |
| Max print speed | 70 mm/h | 150 mm/h (tilt-release) |
| Light source | Standard LED array | COB, 92% uniformity |
| AI failure detection | No | Yes (camera) |
| Resin heating | No | Smart tank heating |
| Price | ~$165 | ~$269 |
The base Mars 5 isn’t a stripped-down Ultra with the same core printer underneath — it’s a genuinely different LCD panel and light engine. The $100 gap buys real hardware, not a firmware-locked feature.
The 30-second verdict
Buy the base Mars 5 if you’re new to resin printing or print casual miniatures and props. At ~$165, its 35-micron resolution is still sharper than an FDM nozzle can produce and handles the vast majority of tabletop-scale detail work without issue. It’s the lower-risk way to find out whether resin printing’s extra mess and steps (mixing resin, gloves, wash-and-cure) fit your workflow before spending more.
Step up to the Mars 5 Ultra if speed, automation, or the finest detail matter. The Ultra’s 18-micron pixels resolve filigree and fine engraving work the base model can’t match as cleanly, its tilt-release mechanism roughly doubles print speed, and its AI camera can catch a failed print at layer 40 instead of layer 400 on an unattended overnight run.
Elegoo Mars 5
- 6.6-inch 4K monochrome LCD at 35 μm XY resolution — sharper than any FDM nozzle.
- 143.43 × 89.6 × 150 mm build volume, enough for most single miniatures and jewelry masters.
- 0.01–0.2 mm layer thickness range with 0.02 mm Z-axis accuracy.
- No AI camera or tilt-release — the features Elegoo reserves for the Ultra tier.
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Why the resolution gap matters less than it sounds
A 35-micron pixel sounds coarse next to the Ultra’s 18-micron panel, but both numbers are already far finer than what matters for most printing. A typical FDM nozzle lays lines roughly 400 microns wide — more than ten times the base Mars 5’s pixel size — which is why even entry-level resin printers resolve faces, small text, and fine surface texture that no FDM machine can touch. The practical difference between 4K and 9K shows up mainly on the smallest details under close inspection or magnification, not on a typical painted 28-32mm miniature viewed at arm’s length.
What you give up without the Ultra’s automation
The base Mars 5 skips two features that matter more for convenience than for final print quality. Without smart tank heating, resin in a cold garage or basement stays thicker and more prone to layer-adhesion failures than on a heated Ultra — printing in a room-temperature indoor space avoids most of that risk. Without the AI camera, a failed print (a detached model, a dry tank) runs to completion and wastes hours and resin rather than pausing automatically. Neither issue is a reason to avoid the base Mars 5, but they’re the honest tradeoff for the lower price.
Bottom line
The Elegoo Mars 5’s real story is that Elegoo split one printer into two honest tiers instead of quietly cutting corners: the base model’s 4K resolution is still sharper than FDM and plenty for most hobbyist printing, while the Ultra’s $100 premium buys real speed and automation hardware, not a locked feature flag. Buy the base Mars 5 if you’re testing resin printing or print casual miniatures on a budget. Step up to the Mars 5 Ultra if unattended print reliability and near-double speed are worth $100 to you.
Related guides
- Best resin 3D printer — how the Mars 5 lineup compares against Anycubic and Elegoo’s own Saturn line.
- Best 3D printer for miniatures — where the Mars 5 Ultra fits as the budget resin pick for tabletop detail.
- Elegoo Saturn 4 Ultra review — the next tier up for buyers who outgrow the Mars line’s smaller build volume.
- Resin vs PLA — whether resin printing is the right fit before buying either Mars 5 model.
- Best wash and cure station — required post-processing gear for any resin printer, including the Mars 5.