Choose the Space Pi X4 if different spools need separate temperature settings or a schedule above the S4’s 70°C maximum. Choose the standard S4 when four spools can share one setting and their manufacturer schedules fit its published range. Use the exact spool instructions for each material.
This page compares the Creality Space Pi X4 with the standard SUNLU S4; the SUNLU S4 vs S4 Pro comparison answers what changes between those two SUNLU models.
What the manufacturers publish
| Check | Creality Space Pi X4 | SUNLU FilaDryer S4 standard |
|---|---|---|
| Chamber layout | Two independently controlled chambers; four-spool capacity | One shared chamber; up to four 1 kg spools |
| Temperature | 45–85°C | Maximum 70°C |
| Heating and power | Dual 200 W PTC heaters; 360 W rated power | 350 W PTC heater |
| Published fit | Spools up to 200 mm diameter and 150 mm wide | Internal space: 450 × 210 × 211 mm; confirm each spool’s dimensions |
| Manufacturer page | Creality Space Pi X4 | SUNLU FilaDryer S4 |
Creality lists independent chamber settings and a 45–85°C range for the X4. SUNLU lists a 70°C maximum and space for up to four 1 kg rolls in the standard S4. These are product specifications; use the exact filament maker’s schedule and check the spool’s heat limit.
Exact listings compared
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Two independent chambers
Creality Space Pi X4, four-spool dryer
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Shared chamber · White
SUNLU FilaDryer S4, white
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Shared chamber · Black
SUNLU FilaDryer S4, black
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Choose by workflow
A shared chamber applies one setting to all four spools. If their exact drying schedules differ, run separate cycles or use a dryer with independent chambers. A higher dryer limit does not mean every spool should be dried at that temperature.
Choose the X4 when two different schedules need to run at the same time or the exact filament maker calls for a setting above 70°C. Choose the standard S4 when all four schedules can share one temperature at or below 70°C. For compact one- and two-spool choices, see SUNLU S2 vs. Creality Space Pi and Space Pi Plus.
If the spool does not fit the dryer, use a product with enough published clearance. The 3 kg spool setup guide compares larger spool options. For ASA handling, see the ASA guide; for PETG schedules, see the PETG guide.
Common questions
Can the standard SUNLU S4 dry PLA and PETG at the same time?
Only when both exact spool schedules allow the same chamber setting. The standard S4 uses one shared chamber, so run separate cycles when the material makers specify different temperatures, or use independent chambers.
How does the Creality Space Pi X4 differ from the standard SUNLU S4?
Creality lists two independently controlled chambers and a 45–85°C range for the X4. SUNLU lists one shared chamber, up to four 1 kg spools, and a 70°C maximum for the standard S4.
Does the Space Pi X4 let each chamber use a different setting?
Yes. Creality lists independent temperature control for each chamber. Follow the exact filament maker’s schedule and confirm the selected spool fits the chamber.