Thermal Grizzly Conductonaut
A genuine ownership hazard outside expert direct-die builds. Honeywell PTM7950 delivers the same thermal class without the risk, which is why Conductonaut finishes last on a general board.
Consolidated from 4 independent outlets
Where the cited sources landed, as we read them
10 of 12 research runs entered this as a product to avoid rather than a pick.
Liquid metal carries long-term reliability concerns - leakage currents and heat can trigger electrical damage over time - and a spill or overhang is a board-killing event because it is electrically conductive. It also attacks aluminum coolers and needs periodic maintenance, making it a poor ownership bet outside expert direct-die builds.
Flagged 23 September 2026
Pros & cons
- ✓ Brilliant thermal performance for a narrow expert niche
- ✓ Near-liquid-metal thermal behavior
- ✓ Best raw temperatures in the category where it can safely be used
- ✓ Delivers the lowest raw temperatures in the category
- ✓ Linus Tech Tips forum thread cites Conductonaut as the serious solution for direct-die cooling of a 13700K
- ✗ Electrically conductive - a spill or overhang can kill the board
- ✗ Attacks aluminum coolers
- ✗ Needs periodic maintenance
- ✗ Long-term electrical damage risk from leakage currents and heat
- ✗ Electrically conductive and corrosive to aluminium
The sources behind this ranking
We searched the web and YouTube for what has been published about this product, then read the articles, video transcripts and comments we found. 2 outlets wouldn't let us check their links. We quote no words from these sources, so each row shows only where we placed it.
Evidence 3 articles and 1 community source
Frequently asked questions
It ranks #15 of 15 on our thermal paste tier list, in F tier. That placement draws on 4 independent outlets.
Electrically conductive - a spill or overhang can kill the board. Attacks aluminum coolers. Needs periodic maintenance. Long-term electrical damage risk from leakage currents and heat. Electrically conductive and corrosive to aluminium.
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