Price (USD)
G Pen Pro edgeG Pen Pro
$90
XMAX Ace
$110
G Pen Pro is typically around $20 lower.
Vaporizer Comparison
G Pen Pro vs XMAX Ace
Side-by-side specs, pricing context, and clear decision guidance.
G Pen Pro
Grenco Science $90
VS
XMAX Ace
XMAX $110
Editorial Summary
G Pen Pro and XMAX Ace are both portable / budget vaporizers, but they target different priorities. G Pen Pro is usually the lower-cost pick at $90, around $20 below XMAX Ace. XMAX Ace has the quicker listed heat-up profile, which can matter for shorter sessions.
Specs Compared
22
Different Specs
17
Shared Specs
5
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
XMAX Ace edgeG Pen Pro
~30 seconds
XMAX Ace
~20 seconds
XMAX Ace has the quicker listed heat-up profile.
Heating Style
Close callG Pen Pro
Convection
XMAX Ace
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 Ace
$110
Heating Type
G Pen Pro
Convection
XMAX Ace
Conduction
Heat Up Time
G Pen Pro
~30 seconds
XMAX Ace
~20 seconds
Temperature Range
G Pen Pro
190°C - 220°C (375°F - 428°F)
XMAX Ace
100°C - 255°C
Chamber Capacity
G Pen Pro
~0.25 grams
XMAX Ace
0.2-0.3g
Battery Type
G Pen Pro
Internal
XMAX Ace
18650
Battery Capacity
G Pen Pro
2200mAh
XMAX Ace
2600mAh
Power Adjustment
G Pen Pro
Modular - 3 Stages
XMAX Ace
Digital (precise)
Brand
G Pen Pro
Grenco Science
XMAX Ace
XMAX
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 Ace if...
- You care about faster heat-up time for quicker sessions.
- You prefer a conduction heating profile.
- Your usage leans toward conduction and battery swap sessions.
Spec Comparison Table
Direct comparison of every spec from each device profile.
17 differ 5 shared
| Specification | G Pen Pro | XMAX Ace |
|---|---|---|
| Price (USD) | $90 | $110 |
| Device Type | Portable | Portable |
| Heating Type | Convection | Conduction |
| Heat Up Time | ~30 seconds | ~20 seconds |
| Temperature Range | 190°C - 220°C (375°F - 428°F) | 100°C - 255°C |
| Chamber Capacity | ~0.25 grams | 0.2-0.3g |
| Battery Type | Internal | 18650 |
| Battery Capacity | 2200mAh | 2600mAh |
| Battery Life | — | <10 sessions |
| Charging | Micro-USB | Micro USB |
| Charge Time | <3 hours | — |
| Power Adjustment | Modular - 3 Stages | Digital (precise) |
| Chamber Material | Ceramic | Ceramic |
| Brand | Grenco Science | XMAX |
| Country of Manufacture | — | China |
| Display Type | — | OLED |
| Haptic Feedback | — | Yes |
| Manufacturer | — | TopGreen Technology Co |
| Release Date | 2017 | — |
| 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 Ace?
The biggest practical difference is heating approach: G Pen Pro runs convection while XMAX Ace runs conduction. That changes flavor delivery, vapor density, and how the device responds to slow versus fast draws.
Which is cheaper, the G Pen Pro or the XMAX Ace?
G Pen Pro is the cheaper option at $90 compared with $110 for the XMAX Ace, about $20 less. Live retailer pricing can shift, so confirm before buying.
Which heats up faster, the G Pen Pro or the XMAX Ace?
XMAX Ace reaches session-ready temperature in ~20 seconds, while the G Pen Pro takes ~30 seconds. That's roughly 10 seconds quicker on the XMAX Ace, which is useful if you want shorter, on-demand sessions.
What's the difference in heating between the G Pen Pro and the XMAX Ace?
G Pen Pro uses convection heating, while the XMAX Ace uses conduction. Heating style influences flavor profile, vapor density, and how forgiving the device is to draw technique.
Can I swap the batteries on the G Pen Pro or the XMAX Ace?
XMAX Ace 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.
Can I set custom temperatures on the G Pen Pro or the XMAX Ace?
G Pen Pro controls heat with modular - 3 stages, while the XMAX Ace uses digital (precise). XMAX Ace gives you finer per-degree control.
How much flower do the G Pen Pro and XMAX Ace hold?
G Pen Pro lists a chamber capacity of ~0.25 grams; the XMAX Ace lists 0.2-0.3g.
Need a different matchup?
Jump into the comparison hub to pick any two devices and open a canonical side-by-side page.