Price (USD)
Close callBoundless CFX
$140
G Pen Hyer
$150
Pricing is very close between both devices.
Vaporizer Comparison
Boundless CFX vs G Pen Hyer
Side-by-side specs, pricing context, and clear decision guidance.
Boundless CFX
Boundless Technology from $134.95
VS
G Pen Hyer
Grenco Science from $249.99
Editorial Summary
Boundless CFX and G Pen Hyer are both portable / electronic vaporizers, but they target different priorities. Their listed prices are close ($140 vs $150). Session style, airflow, and extraction behavior will matter more than raw spec sheet numbers here.
Specs Compared
22
Different Specs
19
Shared Specs
3
Overall Overlap
14%
Shared Traits
Portable Electronic Concentrates
Head-to-Head Highlights
A quick snapshot of the specs people usually care about first.
Heating Style
Close callBoundless CFX
Hybrid Convection
G Pen Hyer
Conduction
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
G Pen Hyer
$150
Heating Type
Boundless CFX
Hybrid Convection
G Pen Hyer
Conduction
Temperature Range
Boundless CFX
100°C-221.1°C
G Pen Hyer
180°C - 220°C dry herb, 250°C - 450°C concentrate
Battery Type
Boundless CFX
Internal
G Pen Hyer
External Battery Pack
Battery Capacity
Boundless CFX
2500mAh
G Pen Hyer
6000mAh
Charging
Boundless CFX
Micro USB
G Pen Hyer
USB-C
Charge Time
Boundless CFX
~30 minutes
G Pen Hyer
2.5 - 3 hours
Power Adjustment
Boundless CFX
Digital
G Pen Hyer
Digital Control - 5 Stage Modular
Chamber Material
Boundless CFX
Ceramic
G Pen Hyer
Ceramic (dry herb tank), Quartz (concentrate tank)
Brand
Boundless CFX
Boundless Technology
G Pen Hyer
Grenco Science
Choose Boundless CFX if...
- You prefer a hybrid convection heating profile.
- Your usage leans toward convection and hybrid sessions.
- You prefer Boundless CFX's overall feature mix and form factor.
Lowest price
$134.95
at Boundless Technology
Choose G Pen Hyer if...
- You prefer a conduction heating profile.
- Your usage leans toward conduction and premium sessions.
- You prefer G Pen Hyer's overall feature mix and form factor.
Current price
$249.99
at Slick Vapes
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.
19 differ 3 shared
| Specification | Boundless CFX | G Pen Hyer |
|---|---|---|
| Price (USD) | $140 | $150 |
| Device Type | Portable | Portable |
| Heating Type | Hybrid Convection | Conduction |
| Heat Up Time | ~30 seconds | — |
| Temperature Range | 100°C-221.1°C | 180°C - 220°C dry herb, 250°C - 450°C concentrate |
| Chamber Capacity | — | ~0.5g |
| Battery Type | Internal | External Battery Pack |
| Battery Capacity | 2500mAh | 6000mAh |
| Charging | Micro USB | USB-C |
| Charge Time | ~30 minutes | 2.5 - 3 hours |
| Dimensions | 120x70x30mm | — |
| Power Adjustment | Digital | Digital Control - 5 Stage Modular |
| Chamber Material | Ceramic | Ceramic (dry herb tank), Quartz (concentrate tank) |
| Concentrate Support | Yes | Yes |
| Brand | Boundless Technology | Grenco Science |
| Country of Manufacture | China | — |
| Display Type | — | LED Light User Interface |
| Haptic Feedback | — | No |
| Heating Element | — | Stainless Steel |
| Release Date | 2016 | 2022 |
| Session Style | Session | Session |
| Warranty | 1 year | — |
Comparison FAQs
What is the biggest difference between the Boundless CFX and the G Pen Hyer?
The biggest practical difference is heating approach: Boundless CFX runs hybrid convection while G Pen Hyer runs conduction. That changes flavor delivery, vapor density, and how the device responds to slow versus fast draws.
What's the difference in heating between the Boundless CFX and the G Pen Hyer?
Boundless CFX uses hybrid convection heating, while the G Pen Hyer uses conduction. Heating style influences flavor profile, vapor density, and how forgiving the device is to draw technique.
Which is cheaper, the Boundless CFX or the G Pen Hyer?
Listed prices are close: $140 for the Boundless CFX versus $150 for the G Pen Hyer. Day-to-day price will likely come down to whichever retailer is running a promotion.
Which charges faster, the Boundless CFX or the G Pen Hyer?
Boundless CFX fully charges in ~30 minutes, ahead of 2.5 - 3 hours on the G Pen Hyer.
Which has a wider temperature range, the Boundless CFX or the G Pen Hyer?
G Pen Hyer covers 180°C - 220°C dry herb, 250°C - 450°C concentrate, a wider band than the Boundless CFX at 100°C-221.1°C. A wider range gives you more room to dial in flavor at the low end and big clouds at the top.
Can I use concentrates with the Boundless CFX or the G Pen Hyer?
Both devices support concentrate use, typically via an included or aftermarket pad or insert. Check the manual for the recommended approach for each.
Which uses USB-C, the Boundless CFX or the G Pen Hyer?
G Pen Hyer charges over USB-C; the Boundless CFX uses a Micro USB port. USB-C means one fewer cable to keep around if your phone and laptop already use it.
Need a different matchup?
Jump into the comparison hub to pick any two devices and open a canonical side-by-side page.