Price (USD)
G Pen Roam edgeG Pen Roam
$100
PAX 3
$250
G Pen Roam is typically around $150 lower.
Vaporizer Comparison
G Pen Roam vs PAX 3
Side-by-side specs, pricing context, and clear decision guidance.
G Pen Roam
Grenco Science from $49.95
VS
PAX 3
PAX Labs $250
Editorial Summary
G Pen Roam and PAX 3 are both portable / electronic vaporizers, but they target different priorities. G Pen Roam is usually the lower-cost pick at $100, around $150 below PAX 3. G Pen Roam has the quicker listed heat-up profile, which can matter for shorter sessions.
Specs Compared
23
Different Specs
20
Shared Specs
3
Overall Overlap
13%
Shared Traits
Portable Electronic Concentrates
Head-to-Head Highlights
A quick snapshot of the specs people usually care about first.
Heat-Up Time
G Pen Roam edgeG Pen Roam
~5 seconds
PAX 3
<30 seconds
G Pen Roam has the quicker listed heat-up profile.
Weight
PAX 3 edgeG Pen Roam
~317g
PAX 3
~93 grams
PAX 3 is the lighter listed unit.
Heating Style
Close callG Pen Roam
Conduction
PAX 3
Conduction
Both devices use a similar heating approach.
Key Differences at a Glance
Top specs where these two devices diverge.
Price (USD)
G Pen Roam
$100
PAX 3
$250
Heat Up Time
G Pen Roam
~5 seconds
PAX 3
<30 seconds
Temperature Range
G Pen Roam
204°C - 427°C (400°F - 800°F)
PAX 3
182°C - 215°C (360°F - 420°F)
Battery Type
G Pen Roam
Internal
PAX 3
Internal 18650
Battery Capacity
G Pen Roam
1300mAh
PAX 3
3500mAh
Battery Life
G Pen Roam
15-20 sessions
PAX 3
~90 minutes
Charging
G Pen Roam
Micro-USB
PAX 3
Proprietary Dock
Charge Time
G Pen Roam
~2 hours
PAX 3
~90 minutes
Weight
G Pen Roam
~317g
PAX 3
~93 grams
Power Adjustment
G Pen Roam
Digital Control
PAX 3
Modular - 4 stages
Choose G Pen Roam if...
- You want the lower listed entry price ($100 vs $250).
- You care about faster heat-up time for quicker sessions.
- You prefer G Pen Roam's overall feature mix and form factor.
Lowest price
$49.95
at G Pen
Choose PAX 3 if...
- You want the lighter unit for carrying and travel.
- Your usage leans toward conduction and discrete sessions.
- You prefer PAX 3's overall feature mix and form factor.
Typical price
$250
Sold by To the Cloud Vapor Store
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.
20 differ 3 shared
| Specification | G Pen Roam | PAX 3 |
|---|---|---|
| Price (USD) | $100 | $250 |
| Device Type | Portable | Portable |
| Heating Type | Conduction | Conduction |
| Heat Up Time | ~5 seconds | <30 seconds |
| Temperature Range | 204°C - 427°C (400°F - 800°F) | 182°C - 215°C (360°F - 420°F) |
| Chamber Capacity | — | 0.35 - 0.5 grams |
| Battery Type | Internal | Internal 18650 |
| Battery Capacity | 1300mAh | 3500mAh |
| Battery Life | 15-20 sessions | ~90 minutes |
| Charging | Micro-USB | Proprietary Dock |
| Charge Time | ~2 hours | ~90 minutes |
| Bluetooth / App | — | Yes |
| Dimensions | — | 98mm x 31mm x 22mm |
| Weight | ~317g | ~93 grams |
| Power Adjustment | Digital Control | Modular - 4 stages |
| Chamber Material | Quartz | Stainless Steel |
| Concentrate Support | Yes | Yes |
| Brand | Grenco Science | PAX Labs |
| Adjustable Airflow | No | — |
| Display Type | LED | — |
| Haptic Feedback | Yes | — |
| Release Date | 2020 | 2016 |
| Warranty | 1 year | 10 years |
Comparison FAQs
What is the biggest difference between the G Pen Roam and the PAX 3?
The biggest practical difference is price tier: the G Pen Roam sits at $100 while the PAX 3 is $250, a gap of about $150 that puts them in different buying brackets.
Which is cheaper, the G Pen Roam or the PAX 3?
G Pen Roam is the cheaper option at $100 compared with $250 for the PAX 3, about $150 less. Live retailer pricing can shift, so confirm before buying.
Which heats up faster, the G Pen Roam or the PAX 3?
G Pen Roam reaches session-ready temperature in ~5 seconds, while the PAX 3 takes <30 seconds. That's roughly 25 seconds quicker on the G Pen Roam, which is useful if you want shorter, on-demand sessions.
Which is lighter, the G Pen Roam or the PAX 3?
PAX 3 is the lighter unit at ~93 grams, around 224g less than the G Pen Roam at ~317g. The lighter device is easier to carry and pocket day-to-day.
Can I set custom temperatures on the G Pen Roam or the PAX 3?
G Pen Roam controls heat with digital control, while the PAX 3 uses modular - 4 stages. G Pen Roam gives you finer per-degree control.
Which charges faster, the G Pen Roam or the PAX 3?
PAX 3 fully charges in ~90 minutes, ahead of ~2 hours on the G Pen Roam.
Which is more discreet, the G Pen Roam or the PAX 3?
PAX 3 is the better pick if low-profile use matters. It's tagged as stealth or pocket-friendly in our database, while the G Pen Roam is more conspicuous in hand and harder to keep out of sight.
Need a different matchup?
Jump into the comparison hub to pick any two devices and open a canonical side-by-side page.