Price (USD)
Close callG Pen Pro
$90
XMAX Starry V3
$100
Pricing is very close between both devices.
Vaporizer Comparison
G Pen Pro vs XMAX Starry V3
Side-by-side specs, pricing context, and clear decision guidance.
G Pen Pro
Grenco Science $90
VS
XMAX Starry V3
XMAX $100
Editorial Summary
G Pen Pro and XMAX Starry V3 are both portable / budget vaporizers, but they target different priorities. Their listed prices are close ($90 vs $100). Heat-up speed is broadly similar between the two.
Specs Compared
26
Different Specs
20
Shared Specs
6
Overall Overlap
23%
Shared Traits
Portable Budget Electronic
Head-to-Head Highlights
A quick snapshot of the specs people usually care about first.
Heat-Up Time
Close callG Pen Pro
~30 seconds
XMAX Starry V3
~30 seconds
Both devices are in a similar heat-up range.
Heating Style
Close callG Pen Pro
Convection
XMAX Starry V3
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)
G Pen Pro
$90
XMAX Starry V3
$100
Heating Type
G Pen Pro
Convection
XMAX Starry V3
Conduction
Temperature Range
G Pen Pro
190°C - 220°C (375°F - 428°F)
XMAX Starry V3
212°F - 464°F
Chamber Capacity
G Pen Pro
~0.25 grams
XMAX Starry V3
0.3g
Battery Type
G Pen Pro
Internal
XMAX Starry V3
18650
Battery Capacity
G Pen Pro
2200mAh
XMAX Starry V3
2900mAh
Charge Time
G Pen Pro
<3 hours
XMAX Starry V3
90-120 minutes
Power Adjustment
G Pen Pro
Modular - 3 Stages
XMAX Starry V3
Digital (precise)
Brand
G Pen Pro
Grenco Science
XMAX Starry V3
XMAX
Release Date
G Pen Pro
2017
XMAX Starry V3
2019
Choose G Pen Pro if...
- You prefer a convection heating profile.
- Your usage leans toward convection sessions.
- You prefer G Pen Pro's overall feature mix and form factor.
Choose XMAX Starry V3 if...
- You prefer a conduction heating profile.
- Your usage leans toward conduction and battery swap sessions.
- You prefer XMAX Starry V3's overall feature mix and form factor.
Spec Comparison Table
Direct comparison of every spec from each device profile.
20 differ 6 shared
| Specification | G Pen Pro | XMAX Starry V3 |
|---|---|---|
| Price (USD) | $90 | $100 |
| Device Type | Portable | Portable |
| Heating Type | Convection | Conduction |
| Heat Up Time | ~30 seconds | ~30 seconds |
| Temperature Range | 190°C - 220°C (375°F - 428°F) | 212°F - 464°F |
| Chamber Capacity | ~0.25 grams | 0.3g |
| Battery Type | Internal | 18650 |
| Battery Capacity | 2200mAh | 2900mAh |
| Battery Life | — | 60-80 minutes |
| Charging | Micro-USB | Micro USB |
| Charge Time | <3 hours | 90-120 minutes |
| Pass-Through Charging | — | Yes |
| Dimensions | — | 11 x 3.5 x 2.4 cm |
| Weight | — | 120g |
| Power Adjustment | Modular - 3 Stages | Digital (precise) |
| Chamber Material | Ceramic | Ceramic |
| Brand | Grenco Science | XMAX |
| Adjustable Airflow | — | No |
| Country of Manufacture | — | China |
| Display Type | — | OLED |
| Haptic Feedback | — | Yes |
| Manufacturer | — | TopGreen Technology Co |
| Release Date | 2017 | 2019 |
| Replaceable Battery | — | Yes |
| Session Style | Session | Session |
| Warranty | 1 year | 1 year |
Comparison FAQs
What is the biggest difference between the G Pen Pro and the XMAX Starry V3?
The biggest practical difference is heating approach: G Pen Pro runs convection while XMAX Starry V3 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 G Pen Pro and the XMAX Starry V3?
G Pen Pro uses convection heating, while the XMAX Starry V3 uses conduction. Heating style influences flavor profile, vapor density, and how forgiving the device is to draw technique.
Does the G Pen Pro or the XMAX Starry V3 hold more flower?
XMAX Starry V3 has the larger chamber at 0.3g, versus ~0.25 grams on the G Pen Pro. A bigger bowl means fewer reloads on long sessions; a smaller one suits microdosing and quicker bowls.
Which is cheaper, the G Pen Pro or the XMAX Starry V3?
Listed prices are close: $90 for the G Pen Pro versus $100 for the XMAX Starry V3. Day-to-day price will likely come down to whichever retailer is running a promotion.
Can I swap the batteries on the G Pen Pro or the XMAX Starry V3?
XMAX Starry V3 uses 18650, so you can carry spares for back-to-back days. The G Pen Pro has a built-in battery you can't swap on the go.
Which heats up faster, the G Pen Pro or the XMAX Starry V3?
Heat-up times are very close: ~30 seconds on the G Pen Pro and ~30 seconds on the XMAX Starry V3. The real-world difference will be hard to notice mid-session.
Can I set custom temperatures on the G Pen Pro or the XMAX Starry V3?
G Pen Pro controls heat with modular - 3 stages, while the XMAX Starry V3 uses digital (precise). XMAX Starry V3 gives you finer per-degree control.
Need a different matchup?
Jump into the comparison hub to pick any two devices and open a canonical side-by-side page.