What launched
Noctua introduced the NT-CP1 AM5/4 carbon nanotube thermal pad for AMD AM5 and AM4 processors on 12 November 2026. It is available from Noctua's official Amazon stores as of that day. The suggested retail price is EUR 24.95 or USD 24.95, and other sales partners will receive stock shortly.
That is later than first planned. The June partnership announcement said the pad was scheduled for September 2026. Under the deal, Noctua exclusively distributes Carbice pads for the retail market and collaborates on future products.
What it is
The NT-CP1 is a thermal interface material. It sits between the CPU's heat spreader and the cooler base, where paste normally goes.
- Size: It is 90 µm thin and precut to 33×33 mm, and fits both AM5 and AM4 socket processors.
- Construction: An aluminum backbone sits between layers of carbon nanotubes. Noctua's interview with HWCooling gives the detail. The pad is precut and 90 µm thin. The same interview describes an aluminium backbone that makes it robust and easy to remove and a nanoscale phase-change polymer coating over the surface.
- Origin: The pad uses Carbice's vertically aligned carbon nanotube technology, originally developed for high thermal reliability in aerospace systems. "Space-grade" is the marketing label for that heritage. It does not mean this retail pad is certified for spaceflight.
It is not a VRM-style gap filler. Noctua says those soft pads are typically 0.5–3 mm thick. The NT-CP1 is meant for direct, tightly clamped contact between a CPU heat spreader and a cooler base.
Break-in: slower start, steadier finish
Noctua says plainly that the pad does not win immediately. In the HWCooling interview, the company says the polymer conducts heat less well than the nanotubes. The pad therefore starts out measurably worse than a good paste. After a handful of thermal cycles the polymer reflows and wets the surfaces, and the nanotubes then make more direct contact.
Noctua's figures, which are manufacturer claims:
- Its tests typically show further gains over the first few hundred to several thousand thermal cycles.
- The pad usually overtakes NT-H1 paste after about 150–1,000 cycles. One slow test setup took about 3,700 cycles.
- Carbice says it has validated the technology for more than 100,000 cycles without measurable degradation.
Noctua's page also says the pad does not require any manual activation. It describes how automated Prime95 runs can speed up the activation phase. In practice, ordinary use and heat cycles do the work, and you can hurry it along with a repeated load.
Independent testing
Igor'sLAB tested the pad in June. Its results back Noctua's overall story, but with caveats.
- Settling: The bond line thickness fell from about 90.8 µm to 72.3 µm in the first run. It then held at roughly 68–70 µm.
- Where the gain comes from: Over the first pass, thermal resistance fell about 83 percent while thickness fell only about 20 percent. That means the improvement is mostly better contact, not a thinner pad.
- Stability: After 10,000 severe cycles, the result changed by only about 0.8 to 1.5 percent.
- Limits: Igor declined to call this "indefinite." Ten thousand cycles show excellent stability, not infinite lifetime.
- Pressure matters: Effective conductivity rose with mounting force. Igor says about 13 PSI, a CPU-typical pressure, is enough for the pad to work. Higher, even pressure helps further.
- Single use: Igor says the pad is not reusable, because the soft adhesive layer separates and leaves carbon particles behind. Noctua itself doesn't say whether the pad can be reused, so assume it is single use.
Who should buy it
It suits:
- Ryzen AM4 or AM5 owners who want a clean install with no syringe, spreading or cleanup.
- Builds you rarely open, such as small-form-factor or sealed systems.
- Anyone tired of repasting every few years.
Think twice if:
- You want the lowest temperatures in the first few weeks. Noctua's own data show NT-H1 paste ahead at first.
- You swap coolers often. The pad is single use.
- You run Intel, a laptop, or a bare-die GPU. The NT-CP1 works only with AMD's AM4 and AM5 sockets, and Noctua's full validation covers only desktop AM4/AM5 CPUs with a heat spreader. Carbice told Igor'sLAB that neither company recommends it for bare-die GPUs or devices without a heat spreader.
Installation and handling
Tom's Hardware reports that Noctua recommends a simple "peel, press and peel" process. The slightly tacky coating holds the pad in place. The company says the surface is electrically insulating while the polymer layer stays intact. Handle it gently and keep it clean. A damaged coating undercuts that insulation claim.
I haven't tested the pad myself. I am relying on Noctua's materials and Igor'sLAB's published results.
Environmental claims
Tom's Hardware reports that the pad is made in the US from recycled aluminum and waste carbon gas. It also reports that Noctua calls the process more energy-efficient than graphite or graphene pads. Noctua adds that the pad can be recycled through standard aluminium recycling. These are company claims. I found no independent lifecycle audit.
Bottom line
The NT-CP1 trades peak first-day performance for convenience and stability over time. At $24.95 it costs more than most pastes, but you are paying to skip repasting. It is a reasonable buy for a Ryzen build you plan to leave alone, and a poor fit for benchmark chasers who rebuild often.