Price (USD)
Boundless CFX edgeBoundless CFX
$140
PAX FOUR
$250
Boundless CFX is typically around $110 lower.
Vaporizer Comparison
Boundless CFX vs PAX FOUR
Side-by-side specs, pricing context, and clear decision guidance.
Boundless CFX
Boundless Technology from $134.95
VS
PAX FOUR
PAX Labs $250
Editorial Summary
Boundless CFX and PAX FOUR are both portable / hybrid vaporizers, but they target different priorities. Boundless CFX is usually the lower-cost pick at $140, around $110 below PAX FOUR. Boundless CFX has the quicker listed heat-up profile, which can matter for shorter sessions.
Specs Compared
24
Different Specs
22
Shared Specs
2
Overall Overlap
8%
Shared Traits
Portable Hybrid Electronic
Head-to-Head Highlights
A quick snapshot of the specs people usually care about first.
Heat-Up Time
Boundless CFX edgeBoundless CFX
~30 seconds
PAX FOUR
55-70 seconds
Boundless CFX has the quicker listed heat-up profile.
Heating Style
Close callBoundless CFX
Hybrid Convection
PAX FOUR
Hybrid (conduction and convection)
Heating style differs, which can impact flavor and extraction behavior.
Key Differences at a Glance
Top specs where these two devices diverge.
Price (USD)
Boundless CFX
$140
PAX FOUR
$250
Heating Type
Boundless CFX
Hybrid Convection
PAX FOUR
Hybrid (conduction and convection)
Heat Up Time
Boundless CFX
~30 seconds
PAX FOUR
55-70 seconds
Temperature Range
Boundless CFX
100°C-221.1°C
PAX FOUR
190-220°C (374-428°F)
Battery Type
Boundless CFX
Internal
PAX FOUR
Internal lithium-ion
Battery Capacity
Boundless CFX
2500mAh
PAX FOUR
2800mAh
Charging
Boundless CFX
Micro USB
PAX FOUR
USB-C
Charge Time
Boundless CFX
~30 minutes
PAX FOUR
~90 minutes
Dimensions
Boundless CFX
120x70x30mm
PAX FOUR
108 x 36 x 29mm
Power Adjustment
Boundless CFX
Digital
PAX FOUR
Four preset heat modes (purple, green, yellow, orange)
Choose Boundless CFX if...
- You want the lower listed entry price ($140 vs $250).
- You care about faster heat-up time for quicker sessions.
- You prefer a hybrid convection heating profile.
- Your usage leans toward convection and ceramic chamber sessions.
Lowest price
$134.95
at Boundless Technology
Choose PAX FOUR if...
- You prefer a hybrid (conduction and convection) heating profile.
- Your usage leans toward discrete sessions.
- You prefer PAX FOUR's overall feature mix and form factor.
Typical price
$250
Sold by The Stash Shack
Prices are read automatically from retailer pages and were last checked Aug 27, 2026; confirm the price at checkout. Some links are affiliate links, which support Thermal Extractions at no extra cost to you.
Spec Comparison Table
Direct comparison of every spec from each device profile.
22 differ 2 shared
| Specification | Boundless CFX | PAX FOUR |
|---|---|---|
| Price (USD) | $140 | $250 |
| Device Type | Portable | Portable |
| Heating Type | Hybrid Convection | Hybrid (conduction and convection) |
| Heat Up Time | ~30 seconds | 55-70 seconds |
| Temperature Range | 100°C-221.1°C | 190-220°C (374-428°F) |
| Chamber Capacity | — | ~0.3g |
| Battery Type | Internal | Internal lithium-ion |
| Battery Capacity | 2500mAh | 2800mAh |
| Battery Life | — | Up to 5 sessions, about 50 minutes of run time |
| Charging | Micro USB | USB-C |
| Charge Time | ~30 minutes | ~90 minutes |
| Dimensions | 120x70x30mm | 108 x 36 x 29mm |
| Weight | — | 125 grams |
| Power Adjustment | Digital | Four preset heat modes (purple, green, yellow, orange) |
| Chamber Material | Ceramic | Stainless steel |
| Concentrate Support | Yes | No (not compatible with the PAX Concentrate Insert) |
| Brand | Boundless Technology | PAX Labs |
| Adjustable Airflow | — | No (flat and raised mouthpieces change the draw) |
| Country of Manufacture | China | — |
| Display Type | — | LED petals |
| Manufacturer | — | PAX Labs, Inc (model X410) |
| Release Date | 2016 | 2026 |
| Session Style | Session | Session |
| Warranty | 1 year | 2 years, plus 1 year when registered within 30 days |
Comparison FAQs
What is the biggest difference between the Boundless CFX and the PAX FOUR?
The biggest practical difference is price tier: the Boundless CFX sits at $140 while the PAX FOUR is $250, a gap of about $110 that puts them in different buying brackets.
Which is cheaper, the Boundless CFX or the PAX FOUR?
Boundless CFX is the cheaper option at $140 compared with $250 for the PAX FOUR, about $110 less. Live retailer pricing can shift, so confirm before buying.
Which heats up faster, the Boundless CFX or the PAX FOUR?
Boundless CFX reaches session-ready temperature in ~30 seconds, while the PAX FOUR takes 55-70 seconds. That's roughly 33 seconds quicker on the Boundless CFX, which is useful if you want shorter, on-demand sessions.
What's the difference in heating between the Boundless CFX and the PAX FOUR?
Boundless CFX uses hybrid convection heating, while the PAX FOUR uses hybrid (conduction and convection). Heating style influences flavor profile, vapor density, and how forgiving the device is to draw technique.
Can I use concentrates with the Boundless CFX or the PAX FOUR?
Only the Boundless CFX supports concentrates out of the box. The PAX FOUR is dry-herb-only by design.
Can I set custom temperatures on the Boundless CFX or the PAX FOUR?
Boundless CFX controls heat with digital, while the PAX FOUR uses four preset heat modes (purple, green, yellow, orange). Boundless CFX gives you finer per-degree control.
Which charges faster, the Boundless CFX or the PAX FOUR?
Boundless CFX fully charges in ~30 minutes, ahead of ~90 minutes on the PAX FOUR.
Need a different matchup?
Jump into the comparison hub to pick any two devices and open a canonical side-by-side page.