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Arctic MX-1 vs Phobya Thermal Pad Ultra 5W/mK: Comparison

Arctic MX-1 vs Phobya Thermal Pad Ultra 5W/mK: the recommended use difference

The first real difference is recommended use: Arctic MX-1 Mainstream CPU/GPU against Phobya Thermal Pad Ultra 5W/mK Mainstream CPU/GPU; Phobya also markets it for VRAM, VRM,.... Paste segment is not the same on both, Standard Paste on the Arctic MX-1 versus Pad on the Phobya Thermal Pad Ultra 5W/mK.

Arctic MX-1 vs Phobya Thermal Pad Ultra 5W/mK: which one fits your build

The Arctic MX-1 is the one to take for retro/vintage PC builders restoring an early-2000s Arctic Cooling Freezer setup and historical reference on Arctic's MX lineage, though it is the wrong buy for buyers needing a modern, independently benchmarked paste. It is not the one for any current-generation CPU or GPU - superseded by MX-2 through MX-7 with two decades of formula improvements. it is not the pick for buyers wanting Phobya's higher-conductivity Thermal Pad XT line instead. It also earns its place with VRAM, VRM, and mainboard chipset cooling needing a compressible pad to bridge height differences up to 4mm. Avoid it for CPU IHS-to-cooler contact where a conventional paste offers thinner bond lines. Our rating of the Arctic MX-1 (4.8/10): A legacy compound originally bundled with older Arctic Cooling coolers; Arctic no longer publishes current specifications for it, so treat it as a dated, no-longer-current option. Our rating of the Phobya Thermal Pad Ultra 5W/mK (5.8/10): A small single-piece pad with modest conductivity, a niche fit for specific gap sizes.

What Arctic MX-1 and Phobya Thermal Pad Ultra 5W/mK have in common

The common ground is wider than the gap: electrical conductivity are identical here.

Specs and benchmarks

  • Electrical Conductivity

    Arctic MX-1
    Insulating
    Phobya Thermal Pad Ultra 5W/mK
    Insulating
  • Recommended Use

    Arctic MX-1
    Mainstream CPU/GPU (originally bundled with Arctic Cooling Freezer 4/7/64 and Accelero coolers, rated for all AMD and Intel platforms of its era)
    Phobya Thermal Pad Ultra 5W/mK
    Mainstream CPU/GPU; Phobya also markets it for VRAM, VRM, and North/Southbridge cooling
  • Paste Segment

    Arctic MX-1
    Standard Paste
    Phobya Thermal Pad Ultra 5W/mK
    Pad

    Which one should you pick?

    Choose Arctic MX-1 if you already have it on hand or find it at a lower price.

    Choose Phobya Thermal Pad Ultra 5W/mK if you already have it on hand or find it at a lower price.

    Price comparison

    RetailerArctic MX-1Phobya Thermal Pad Ultra 5W/mK
    NeweggView on NeweggView on Newegg
    Performance-PCsView on Performance-PCs

    Disclaimer: The price and specification of the given product may differ from the actual product. Please confirm on the retailer's website before buying.

    Verdict

    Arctic MX-1

    4.8 / 10 Expert Rating

    A legacy compound originally bundled with older Arctic Cooling coolers; Arctic no longer publishes current specifications for it, so treat it as a dated, no-longer-current option.

    Phobya Thermal Pad Ultra 5W/mK

    5.8 / 10 Expert Rating

    A small single-piece pad with modest conductivity, a niche fit for specific gap sizes.

    More comparisons in Thermal Paste