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Arctic MX-5 vs Honeywell PTM7950: Comparison

Arctic MX-5 and Honeywell PTM7950 differ on compound type: Arctic MX-5 at Carbon-Based, Honeywell PTM7950 at Phase-Change Pad. They match on thermal conductivity and electrical conductivity.

Arctic MX-5 (Carbon-Based/Non-Conductive/Reformulated Low-Viscosity Successor to MX-4)
ArcticArctic MX-5
Honeywell PTM7950 (Phase-Change Pad/Non-Conductive/Reapplication-Free for Repeated Thermal Cycles)
HoneywellHoneywell PTM7950

Specs

Specification
Arctic MX-5 (Carbon-Based/Non-Conductive/Reformulated Low-Viscosity Successor to MX-4)
Arctic MX-5
Honeywell PTM7950 (Phase-Change Pad/Non-Conductive/Reapplication-Free for Repeated Thermal Cycles)
Honeywell PTM7950
Compound TypeCarbon-BasedPhase-Change Pad
BrandArcticHoneywell
ModelArctic MX-5Honeywell PTM7950 , PTM7950
Thermal Conductivity8.5 W/mK8.5 W/mK
Electrical ConductivityInsulatingInsulating
Package Size2g, 4g, 8g, 20gSheet/pad cut to size (sold by area, not weight)
Recommended UseCPU/GPU/Console CoolersLaptop-Thin-GPU (and builds needing reapplication-free long-term use)
Reapplication IntervalNot consistently publishedRated for repeated thermal cycles without reapplication (~2+ years)
Safety NotesNoneSolid at room temperature; softens at operating temperature; different application method than paste
Paste SegmentStandard PastePad

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