Deepcool Z3 PRO
- Thermal Conductivity:
- 4 W/mK
- Electrical Conductivity:
- Non-Conductive
- Operating Temp:
- -50 to 220 C
- Recommended Use:
- Mainstream CPU/GPU
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Manufacturer: Deepcool Last updated: 2026-09-15
Deepcool Z3 PRO (Non-Conductive/4 W/mK/Non-Curing Mainstream Paste) Review
Deepcool Z3 PRO is a 2025 refresh of the entry Z3 compound, a 1.5g non-curing, non-corrosive thermal paste officially rated at 4 W/mK for mainstream CPU and GPU cooling.
Z3 PRO's official rating (4 W/mK) is a small step up from the original Z3's officially quoted >3.5 W/mK, and Deepcool's marketing leans on the "non-curing" claim, meaning the paste won't harden and pump out over time the way older budget compounds can. It's a mainstream-tier paste, not a high-end one: the 220 C ceiling and 2.3 g/cm3 density put it solidly in the same bracket as Z5 PRO rather than competing with Deepcool's DS7/DS9 lines. If you already own Z3 and want a minor bump without paying DS-series prices, Z3 PRO is the direct upgrade path.
Thermal Performance and Conductivity
Deepcool officially rates Z3 PRO at 4 W/(m·K), a modest improvement over the standard Z3's >3.5 W/mK rating, and well below the DS7 (6.9 W/mK) and DS9 (6.5 W/mK) compounds also from Deepcool.
Compound Type and Composition
Deepcool markets Z3 PRO on its non-curing, non-corrosive formula but does not publish the specific compound chemistry on the official spec sheet.
Application and Consistency
Deepcool markets the density as optimized for compatibility with polished CPU cooler surfaces, similar language to the standard Z-series.
Electrical Safety
Non-conductive, protecting against short-circuit risk during application, per Deepcool's official spec sheet.
Comparison to Sibling Products
Z3 PRO and Z5 PRO (also in this catalog) both officially rate at 4 W/mK; the difference between them is package size (1.5g vs 3g), so Z5 PRO is the better buy if you need more paste per tube at the same conductivity tier.
Specifications
Quantity, volume versus weight
| Density | 2.3 g/cm3 |
|---|
| Thermal Conductivity | 4 W/mK |
|---|---|
| Electrical Conductivity | Insulating |
| Package Size | 1.5 g grease weight (5.8 g net weight incl. syringe) |
| Recommended Use | Mainstream CPU/GPU |
| Material | Not officially disclosed by Deepcool |
| Operating Temperature | -50°C to +220°C |
| Paste Segment | Standard Paste |
| Curing | Non-Curing |
| Min Operating Temp | -50 C |
| Max Operating Temp | 220 C |
Expert Review
Reviewed by Burooj Alam. Rated by us, not by users.
Best for
- Mainstream builds wanting a non-curing paste that won't harden over years of use
- Direct upgraders from the original Z3 who want the same form factor
Not for
- High-end or overclocked builds wanting DS7/DS9-tier conductivity
- Buyers needing more than one application per tube (1.5g grease weight)
FAQs
What are the key specifications of the Deepcool Z3 PRO (Non-Conductive/4 W/mK/Non-Curing Mainstream Paste)?
The Deepcool Z3 PRO (Non-Conductive/4 W/mK/Non-Curing Mainstream Paste) is a thermal paste from Deepcool. Key specs: Form Paste, Material Not officially disclosed by Deepcool, Thermal Conductivity 4, Electrical Conductivity Non-Conductive, Recommended Use Mainstream CPU/GPU.
Will the Deepcool Z3 PRO (Non-Conductive/4 W/mK/Non-Curing Mainstream Paste) work with my current setup?
The Deepcool Z3 PRO (Non-Conductive/4 W/mK/Non-Curing Mainstream Paste) lists Thermal Conductivity is 4. Check that against the hardware you already own before buying, since this is the field that most often decides whether a part fits.
Who is the Deepcool Z3 PRO (Non-Conductive/4 W/mK/Non-Curing Mainstream Paste) best suited to?
It suits mainstream builds wanting a non-curing paste that won't harden over years of use, direct upgraders from the original z3 who want the same form factor.
What are the drawbacks of the Deepcool Z3 PRO (Non-Conductive/4 W/mK/Non-Curing Mainstream Paste)?
It is a poor fit for high-end or overclocked builds wanting ds7/ds9-tier conductivity, buyers needing more than one application per tube (1.5g grease weight).
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