Price (USD)
G Pen Pro edgeG Pen Pro
$90
Tempest 2
$179
G Pen Pro is typically around $89 lower.
Vaporizer Comparison
Side-by-side specs, pricing context, and clear decision guidance.
G Pen Pro
Grenco Science $90
Tempest 2
Mad Heaters $179
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
A quick snapshot of the specs people usually care about first.
G Pen Pro
$90
Tempest 2
$179
G Pen Pro is typically around $89 lower.
G Pen Pro
~30 seconds
Tempest 2
~30-45 seconds with torch
Both devices are in a similar heat-up range.
G Pen Pro
Convection
Tempest 2
Convection-heavy with thermal ball matrix
Heating style differs, which can impact flavor and extraction behavior.
Top specs where these two devices diverge.
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
Direct comparison of every spec from each device profile.
| Specification | G Pen Pro | Tempest 2 |
|---|---|---|
| Price (USD) | $90 | $179 |
| Device Type | Portable | Portable |
| Heating Type | Convection | Convection-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 grams | 0.1g - 0.2g (adjustable) |
| Battery Type | Internal | None |
| Battery Capacity | 2200mAh | N/A |
| Battery Life | — | N/A |
| Charging | Micro-USB | N/A |
| Charge Time | <3 hours | N/A |
| Dimensions | — | 122mm x 18.5mm |
| Weight | — | 46g |
| Power Adjustment | Modular - 3 Stages | Visual gauge with click indicators |
| Chamber Material | Ceramic | Titanium |
| Brand | Grenco Science | Mad 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 year | 1 year |
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.
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.
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.
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.
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.
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.
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.
Jump into the comparison hub to pick any two devices and open a canonical side-by-side page.