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Vaporizer Comparison

G Pen Pro vs Tempest 2

Side-by-side specs, pricing context, and clear decision guidance.

G Pen Pro

G Pen Pro

Grenco Science $90

VS
Tempest 2

Tempest 2

Mad Heaters $179

Editorial Summary

G Pen Pro and Tempest 2 are both portable / convection vaporizers, but they target different priorities. G Pen Pro is usually the lower-cost pick at $90, around $89 below Tempest 2. Heat-up speed is broadly similar between the two.

Specs Compared

22

Different Specs

20

Shared Specs

2

Overall Overlap

9%

Shared Traits

Portable Convection

Head-to-Head Highlights

A quick snapshot of the specs people usually care about first.

Price (USD)

G Pen Pro edge

G Pen Pro

$90

Tempest 2

$179

G Pen Pro is typically around $89 lower.

Heat-Up Time

Close call

G Pen Pro

~30 seconds

Tempest 2

~30-45 seconds with torch

Both devices are in a similar heat-up range.

Heating Style

Close call

G Pen Pro

Convection

Tempest 2

Convection-heavy with thermal ball matrix

Heating style differs, which can impact flavor and extraction behavior.

Key Differences at a Glance

Top specs where these two devices diverge.

10 differences

Price (USD)

G Pen Pro

$90

Tempest 2

$179

Heating Type

G Pen Pro

Convection

Tempest 2

Convection-heavy with thermal ball matrix

Heat Up Time

G Pen Pro

~30 seconds

Tempest 2

~30-45 seconds with torch

Temperature Range

G Pen Pro

190°C - 220°C (375°F - 428°F)

Tempest 2

N/A

Chamber Capacity

G Pen Pro

~0.25 grams

Tempest 2

0.1g - 0.2g (adjustable)

Battery Type

G Pen Pro

Internal

Tempest 2

None

Battery Capacity

G Pen Pro

2200mAh

Tempest 2

N/A

Charging

G Pen Pro

Micro-USB

Tempest 2

N/A

Charge Time

G Pen Pro

<3 hours

Tempest 2

N/A

Power Adjustment

G Pen Pro

Modular - 3 Stages

Tempest 2

Visual gauge with click indicators

Choose G Pen Pro if...

  • You want the lower listed entry price ($90 vs $179).
  • You prefer a convection heating profile.
  • Your usage leans toward budget and electronic sessions.
View G Pen Pro Profile

Choose Tempest 2 if...

  • You prefer a convection-heavy with thermal ball matrix heating profile.
  • Your usage leans toward analog and premium sessions.
  • You prefer Tempest 2's overall feature mix and form factor.
View Tempest 2 Profile

Spec Comparison Table

Direct comparison of every spec from each device profile.

20 differ 2 shared
SpecificationG Pen ProTempest 2
Price (USD) $90$179
Device Type PortablePortable
Heating Type ConvectionConvection-heavy with thermal ball matrix
Heat Up Time ~30 seconds~30-45 seconds with torch
Temperature Range 190°C - 220°C (375°F - 428°F)N/A
Chamber Capacity ~0.25 grams0.1g - 0.2g (adjustable)
Battery Type InternalNone
Battery Capacity 2200mAhN/A
Battery Life N/A
Charging Micro-USBN/A
Charge Time <3 hoursN/A
Dimensions 122mm x 18.5mm
Weight 46g
Power Adjustment Modular - 3 StagesVisual gauge with click indicators
Chamber Material CeramicTitanium
Brand Grenco ScienceMad Heaters
Adjustable Airflow Yes
Body Material Grade 5 titanium, aluminum heat shield, stainless steel
Country of Manufacture Made in China, Assembled in the UK
Release Date 2017
Session Style Session
Warranty 1 year1 year

Comparison FAQs

What is the biggest difference between the G Pen Pro and the Tempest 2?

The biggest practical difference is heating approach: G Pen Pro runs convection while Tempest 2 runs convection-heavy with thermal ball matrix. 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 Tempest 2?

G Pen Pro is the cheaper option at $90 compared with $179 for the Tempest 2, about $89 less. Live retailer pricing can shift, so confirm before buying.

Which heats up faster, the G Pen Pro or the Tempest 2?

G Pen Pro reaches session-ready temperature in ~30 seconds, while the Tempest 2 takes ~30-45 seconds with torch. That's roughly 8 seconds quicker on the G Pen Pro, which is useful if you want shorter, on-demand sessions.

What's the difference in heating between the G Pen Pro and the Tempest 2?

G Pen Pro uses convection heating, while the Tempest 2 uses convection-heavy with thermal ball matrix. Heating style influences flavor profile, vapor density, and how forgiving the device is to draw technique.

Does the G Pen Pro or the Tempest 2 hold more flower?

G Pen Pro has the larger chamber at ~0.25 grams, versus 0.1g - 0.2g (adjustable) on the Tempest 2. A bigger bowl means fewer reloads on long sessions; a smaller one suits microdosing and quicker bowls.

Can I set custom temperatures on the G Pen Pro or the Tempest 2?

G Pen Pro controls heat with modular - 3 stages, while the Tempest 2 uses visual gauge with click indicators. Both let you change temperature, just with different levels of precision.

How similar are the G Pen Pro and the Tempest 2?

Across the 22 specs we line up, they share 2 and differ on 20, an overlap of about 9%. The differences are concentrated in the areas the spec table highlights with a marker.

Need a different matchup?

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