Price (USD)
Close callG Pen Roam
$100
XMAX Ace
$110
Pricing is very close between both devices.
Vaporizer Comparison
G Pen Roam vs XMAX Ace
Side-by-side specs, pricing context, and clear decision guidance.
G Pen Roam
Grenco Science from $49.95
VS
XMAX Ace
XMAX $110
Editorial Summary
G Pen Roam and XMAX Ace are both portable / electronic vaporizers, but they target different priorities. Their listed prices are close ($100 vs $110). G Pen Roam has the quicker listed heat-up profile, which can matter for shorter sessions.
Specs Compared
25
Different Specs
20
Shared Specs
5
Overall Overlap
20%
Shared Traits
Portable Electronic
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
XMAX Ace
~20 seconds
G Pen Roam has the quicker listed heat-up profile.
Heating Style
Close callG Pen Roam
Conduction
XMAX Ace
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
XMAX Ace
$110
Heat Up Time
G Pen Roam
~5 seconds
XMAX Ace
~20 seconds
Temperature Range
G Pen Roam
204°C - 427°C (400°F - 800°F)
XMAX Ace
100°C - 255°C
Battery Type
G Pen Roam
Internal
XMAX Ace
18650
Battery Capacity
G Pen Roam
1300mAh
XMAX Ace
2600mAh
Battery Life
G Pen Roam
15-20 sessions
XMAX Ace
<10 sessions
Power Adjustment
G Pen Roam
Digital Control
XMAX Ace
Digital (precise)
Chamber Material
G Pen Roam
Quartz
XMAX Ace
Ceramic
Brand
G Pen Roam
Grenco Science
XMAX Ace
XMAX
Display Type
G Pen Roam
LED
XMAX Ace
OLED
Choose G Pen Roam if...
- You care about faster heat-up time for quicker sessions.
- Your usage leans toward concentrates sessions.
- You prefer G Pen Roam's overall feature mix and form factor.
Lowest price
$49.95
at G Pen
Choose XMAX Ace if...
- Your usage leans toward conduction and budget sessions.
- You prefer XMAX Ace's overall feature mix and form factor.
- You value how the XMAX Ace balances size, controls, and everyday practicality.
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 5 shared
| Specification | G Pen Roam | XMAX Ace |
|---|---|---|
| Price (USD) | $100 | $110 |
| Device Type | Portable | Portable |
| Heating Type | Conduction | Conduction |
| Heat Up Time | ~5 seconds | ~20 seconds |
| Temperature Range | 204°C - 427°C (400°F - 800°F) | 100°C - 255°C |
| Chamber Capacity | — | 0.2-0.3g |
| Battery Type | Internal | 18650 |
| Battery Capacity | 1300mAh | 2600mAh |
| Battery Life | 15-20 sessions | <10 sessions |
| Charging | Micro-USB | Micro USB |
| Charge Time | ~2 hours | — |
| Weight | ~317g | — |
| Power Adjustment | Digital Control | Digital (precise) |
| Chamber Material | Quartz | Ceramic |
| Concentrate Support | Yes | — |
| Brand | Grenco Science | XMAX |
| Adjustable Airflow | No | — |
| Country of Manufacture | — | China |
| Display Type | LED | OLED |
| Haptic Feedback | Yes | Yes |
| Manufacturer | — | TopGreen Technology Co |
| Release Date | 2020 | — |
| Replaceable Battery | — | Yes |
| Session Style | — | Session |
| Warranty | 1 year | 1 year |
Comparison FAQs
What is the biggest difference between the G Pen Roam and the XMAX Ace?
There's no single headline gap. The differences are spread across 20 smaller spec rows rather than concentrated in one place. The spec table below marks each row that differs.
Which heats up faster, the G Pen Roam or the XMAX Ace?
G Pen Roam reaches session-ready temperature in ~5 seconds, while the XMAX Ace takes ~20 seconds. That's roughly 15 seconds quicker on the G Pen Roam, which is useful if you want shorter, on-demand sessions.
Which is cheaper, the G Pen Roam or the XMAX Ace?
Listed prices are close: $100 for the G Pen Roam versus $110 for the XMAX Ace. Day-to-day price will likely come down to whichever retailer is running a promotion.
Can I swap the batteries on the G Pen Roam or the XMAX Ace?
XMAX Ace uses 18650, so you can carry spares for back-to-back days. The G Pen Roam has a built-in battery you can't swap on the go.
What battery life can I expect from the G Pen Roam and the XMAX Ace?
G Pen Roam's spec sheet lists 15-20 sessions; the XMAX Ace lists <10 sessions. The two manufacturers measure battery life differently here, so direct comparison isn't straightforward.
Which has a wider temperature range, the G Pen Roam or the XMAX Ace?
G Pen Roam covers 204°C - 427°C (400°F - 800°F), a wider band than the XMAX Ace at 100°C - 255°C. A wider range gives you more room to dial in flavor at the low end and big clouds at the top.
How similar are the G Pen Roam and the XMAX Ace?
Across the 25 specs we line up, they share 5 and differ on 20, an overlap of about 20%. The differences are concentrated in the areas the spec table highlights with a marker.
Need a different matchup?
Jump into the comparison hub to pick any two devices and open a canonical side-by-side page.