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Manufacturer: Zalman Last updated: 2026-09-11
Zalman ZM-STG1 (Silicone-Based/Non-Conductive/Original Super Thermal Grease Line) Review
ZM-STG1 is Zalman's original "Super Thermal Grease" formula, predating ZM-STG2 in the brand's budget thermal compound lineup and still available for buyers who want the earlier formulation.
Zalman does not officially disclose a specific W/mK figure for ZM-STG1, consistent with the limited published documentation typical of this legacy product line. ZM-STG1 uses a silicone-based grease formula, the original composition approach that Zalman later refined into the ZM-STG2 successor. The compound comes in a 3.5g bottle with a workable consistency suited to standard general-purpose CPU cooling application. ZM-STG1 is non-conductive, carrying no short-circuit risk from typical application. Zalman does not publish a specific reapplication interval for ZM-STG1; as the original formula in an aging product line, buyers should apply conservative general-purpose durability expectations. Against Zalman ZM-STG2 also in this catalog, ZM-STG1 is the older, original formula that STG2 was designed to improve upon, making STG2 the generally preferable choice when both are available at similar prices.
Thermal Performance and Conductivity
Zalman does not officially disclose a specific W/mK figure for ZM-STG1, consistent with the limited published documentation typical of this legacy product line.
Compound Type and Composition
ZM-STG1 uses a silicone-based grease formula, the original composition approach that Zalman later refined into the ZM-STG2 successor.
Application and Consistency
The compound comes in a 3.5g bottle with a workable consistency suited to standard general-purpose CPU cooling application.
Electrical Safety
ZM-STG1 is non-conductive, carrying no short-circuit risk from typical application.
Longevity and Pump-Out Resistance
Zalman does not publish a specific reapplication interval for ZM-STG1; as the original formula in an aging product line, buyers should apply conservative general-purpose durability expectations.
Comparison to Sibling Products
Against Zalman ZM-STG2 also in this catalog, ZM-STG1 is the older, original formula that STG2 was designed to improve upon, making STG2 the generally preferable choice when both are available at similar prices.
Specifications
Identity and form
| Brand | Zalman |
|---|---|
| Model | Zalman ZM-STG1 |
| Compound Type | Silicone-Based |
|---|---|
| Thermal Conductivity | 4 W/mK |
| Electrical Conductivity | Insulating |
| Package Size | 3.5g bottle |
| Recommended Use | General-Purpose CPU Cooling |
| Reapplication Interval | Not consistently published |
| Safety Notes | None |
| Paste Segment | Standard Paste |
| Curing | Non-Curing |
Expert Review
Reviewed by Burooj Alam. Rated by us, not by users.
Best for
- Buyers specifically seeking Zalman's original formula or matching an existing application
- Budget general-purpose CPU cooling where brand history matters
Not for
- Most buyers, who should choose the improved ZM-STG2 at similar pricing
- High-end or overclocked builds needing documented competitive performance
FAQs
What are the key specifications of the Zalman ZM-STG1 (Silicone-Based/Non-Conductive/Original Super Thermal Grease Line)?
The Zalman ZM-STG1 (Silicone-Based/Non-Conductive/Original Super Thermal Grease Line) is a thermal paste from Zalman. Key specs: Compound Type Silicone-Based, Electrical Conductivity Non-Conductive, Package Size 3.5g bottle, Recommended Use General-Purpose CPU Cooling, Reapplication Interval Not consistently published.
Who is the Zalman ZM-STG1 (Silicone-Based/Non-Conductive/Original Super Thermal Grease Line) best suited to?
It suits buyers specifically seeking zalman's original formula or matching an existing application, budget general-purpose cpu cooling where brand history matters.
What are the drawbacks of the Zalman ZM-STG1 (Silicone-Based/Non-Conductive/Original Super Thermal Grease Line)?
It is a poor fit for most buyers, who should choose the improved zm-stg2 at similar pricing, high-end or overclocked builds needing documented competitive performance.
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