Key takeaways
- Thermal Conductivity: Look for compounds rated at 70 W/mK or higher; higher conductivity translates directly to lower die temperatures under sustained gaming or rendering loads.
- Alloy Composition and Origin: German- and U.S.-manufactured gallium-indium-tin alloys tend to offer tighter quality control and more consistent viscosity than unbranded alternatives.
- Included Accessories: A quality spreader, applicator tip, and isopropyl-based cleanser reduce the chance of uneven application and make cleanup safer around exposed PCB traces.
- Volume vs. Number of Builds: One gram covers one to two CPU dies; grab a 2g or 5g tube if you plan to delid multiple chips or re-paste consoles.
- Conformity and Safety Notes: Confirm the compound is non-corrosive to nickel-plated IHS remnants and that the manufacturer provides clear die-seal compatibility guidance for your specific socket.
What's inside
For delidded CPU builds, the Thermal Grizzly Conductonaut 1g is our best overall liquid metal thermal compound, with the PolarTronix Liquid Metal Thermal Paste as a close runner-up for builders who prefer a U.S.-made option. Both deliver exceptional thermal transfer that standard pastes simply cannot match on an exposed die.
Choosing a liquid metal compound for a delidded processor is high-stakes: apply the wrong product or skip proper surface prep and you risk shorting your CPU or seeing temperatures climb instead of drop. This guide cuts through the marketing noise, comparing thermal conductivity, alloy quality, included accessories, and real-world suitability so you can pick the right compound with confidence.
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Quick Comparison
| Product | Best For | Standout Feature | Rating |
|---|---|---|---|
| Thermal Grizzly Conductonaut 1g | All-around delidding | German-engineered GaInSn alloy | Excellent |
| Liquid Metal Thermal Paste 79 W/mK (1g) | Budget-conscious builders | Includes cleanser and spreader | Great Value |
| Thermal Grizzly Conductonaut 5g | Multi-build or professional use | Generous 5g volume, proven formula | Excellent |
| PolarTronix Liquid Metal 1g | Console and GPU delidding | Made in USA, console-optimized | Highly Rated |
| METALLIQ Liquid Metal 2g | Extreme overclocking sessions | Premium German alloy, 2g size | Excellent |
How to Choose a Liquid Metal Thermal Compound for Delidded CPUs
- Thermal Conductivity: Look for compounds rated at 70 W/mK or higher; higher conductivity translates directly to lower die temperatures under sustained gaming or rendering loads.
- Alloy Composition and Origin: German- and U.S.-manufactured gallium-indium-tin alloys tend to offer tighter quality control and more consistent viscosity than unbranded alternatives.
- Included Accessories: A quality spreader, applicator tip, and isopropyl-based cleanser reduce the chance of uneven application and make cleanup safer around exposed PCB traces.
- Volume vs. Number of Builds: One gram covers one to two CPU dies; grab a 2g or 5g tube if you plan to delid multiple chips or re-paste consoles.
- Conformity and Safety Notes: Confirm the compound is non-corrosive to nickel-plated IHS remnants and that the manufacturer provides clear die-seal compatibility guidance for your specific socket.
The Best Liquid Metal Thermal Compounds for Delidded CPUs Reviewed
Best Overall: Thermal Grizzly Conductonaut 1g
Thermal Grizzly’s Conductonaut remains the gold standard for delidded Intel and AMD builds thanks to its precisely formulated GaInSn blend and consistent, easy-to-spread viscosity. It is the pick we recommend to any enthusiast who wants proven single-digit temperature drops without guesswork.
Best Budget: Liquid Metal Thermal Paste 79 W/mK (1g) with Cleanser and Spreader
At a fraction of the price of premium brands, this 79 W/mK paste bundles a dedicated cleanser and spreader in the box, making it ideal for first-time delidders who want everything they need in one affordable kit.
Best Premium: Thermal Grizzly Conductonaut 5g
The 5g tube is built for professionals, mod-shop technicians, or anyone tackling a multi-system delid marathon. You get the same trusted Conductonaut formula with enough volume to service several CPUs, GPUs, and consoles without repurchasing.
Best for Console and GPU Delidding: PolarTronix Liquid Metal 1g
Manufactured in the USA and specifically marketed for PS5, Xbox Series X/S, and GPU applications, PolarTronix is the smartest choice for builders splitting their time between PC and console thermal maintenance.
Best for Extreme Overclocking: METALLIQ Liquid Metal 2g
With a premium German alloy tuned for sustained high-wattage loads, METALLIQ excels when you are pushing a delidded chip past 250 W on custom-loop or phase-change cooling. The 2g tube also gives you margin for re-application after aggressive lapping.
Frequently Asked Questions
Is liquid metal safe on a delidded CPU die?
Yes, provided you apply a thin, even layer and avoid contact with the PCB. Gallium-based compounds are electrically conductive, so masking surrounding capacitors with conformal coating or nail polish is strongly recommended before application.
How much temperature improvement can I expect over traditional paste?
Most delidders report a 10 to 20 degree Celsius drop at full load when switching from a standard thermal paste to liquid metal, with the exact gain depending on cooler performance and ambient conditions.
Can I reuse liquid metal after removing the heatsink?
In most cases the alloy bonds to both surfaces and tears during separation. Plan to clean both the die and cold plate thoroughly and apply fresh compound each time you remount the cooler.
How long does a 1g tube last?
One gram is enough for one to two full CPU die applications or a single CPU-plus-GPU console job. If you anticipate multiple builds, a 2g or 5g tube offers better long-term value.
Final Thoughts
For a single delidded desktop build, the Thermal Grizzly Conductonaut 1g delivers the best blend of performance, brand trust, and ease of use. Budget-minded builders should grab the 79 W/mK kit with its included cleanser and spreader, while anyone servicing multiple systems or chasing extreme overclocks will appreciate the Thermal Grizzly Conductonaut 5g or METALLIQ 2g. Whichever you choose, take your time with surface prep—your die temperatures will thank you.
