Best Thermal Paste of 2026

Three cleaning wipes in the box are what separate the Noctua NT-H2 from the bare tubes here. We appreciate that because the job is never just applying new paste; it is getting the old paste off the heatspreader and cooler base without leaving lint or residue. Noctua rates the 3.5 g pack at roughly 3 to 20 applications depending on CPU size, and the recommended usage time on the CPU is up to five years. That makes it a premium tube, but not a one-repaste purchase.

The paste is designed to be applied without spreading before you set the cooler, which is the method we prefer on a normal desktop mount. It spreads under mounting pressure and stays workable long enough to seat the cooler without a rush. The H2 is also specified for air and liquid coolers and for CPUs, GPUs, and current consoles; that breadth makes it easy to keep one tube for different projects. The three wipes give you a dedicated cleanup step, and they save you from hunting for a lint-free cloth at the last minute.

Where the H2 earns its place is the complete kit: paste, wipes, and a long service window in one box. If you already keep cleaning supplies at your bench, the H1 is the more economical way to get Noctua paste and dry-tissue cleanup. But for a tidy repaste with fewer things to remember, the H2 is the one we pack.

The 8 g tube and dense, high-viscosity fill are the first things we notice about the ARCTIC MX-7. This is a paste built for sustained heat: ARCTIC uses a high filler content and high cohesion to resist pump-out, dry-out, and bleeding through repeated thermal cycles. That matters for a gaming PC or workstation that runs hot for hours, because the failure mode we care about is not a bad first application but a paste that slowly stops doing its job. The 8 g capacity also makes it a practical tube for more than one build.

The MX-7 is not a paste you spread by hand. ARCTIC designed it to be applied as a bead or dot and let the cooler's mounting pressure distribute it into a thin bond line. The method suits the thicker, more stable formula. On a normal CPU with a firmly mounted air or liquid cooler, the method is simple and repeatable. We prefer it for a mounted cooler rather than a bare die where you want full control over coverage.

ARCTIC also makes the MX-7 electrically non-conductive and non-capacitive, so it is safe around CPUs, GPUs, laptops, and consoles. Against the MX-4, it is the step-up for high heat and long service rather than the everyday value pick. Against the Kryonaut, it gives up some of the overclocking focus but is easier to buy in a larger tube and is designed around long-term stability. We reach for the MX-7 when the machine is going to stay hot and we do not want to think about the paste again.

The spatula in the Thermal Grizzly Kryonaut box makes sense the moment you feel how thick the paste is. This is a premium compound aimed at demanding builds and overclocking, and the 5.5 g syringe gives you more material than the small 2 g tubes in the same family. Thermal Grizzly rates it as stable up to 80°C and designed not to dry out at that temperature, which is the kind of long-term claim that matters when a CPU is running near its limit for long sessions.

The Kryonaut suits the buyer who is chasing thermal headroom and is willing to work for it. The paste is thick, so a little goes a long way, but it takes patience to spread evenly with the spatula. On a large heatspreader, we prefer a thin, deliberate layer rather than a heavy blob; excess paste can make a mess and does not improve contact. The included spatula is genuinely useful here, and the syringe gives enough control to place the paste where you want it.

The trade-off is that the Kryonaut is not the easy default for a first repaste. The thickness that helps it stay put can make a clean application harder, and the extra performance is not always worth the fuss on a standard gaming CPU with a mid-range cooler. For an overclocked system, a laptop with a marginal cooler, or a console refresh where you want the best paste you can reasonably buy, it earns its place. We keep it for the builds where the cooler is already good and the goal is to squeeze out the last few degrees.

Cleaning up with a dry tissue is the quiet advantage of the Noctua NT-H1. Noctua lists the paste as removable with a dry paper towel or tissue, no cleaning alcohol required, and that matters when you are repasting a laptop or a console in a cramped space. The 3.5 g pack covers roughly 3 to 20 applications depending on the CPU, with a recommended usage time of up to five years. That is a lot of service from a tube at the value end of this group.

The H1 is easy to apply without spreading before you install the cooler, and it spreads under mounting pressure. It suits a straightforward CPU repaste because the consistency is forgiving: it is not so runny that it drips off the heatspreader, and not so thick that you need a spatula and a lot of patience. It is not the paste we choose for a maximum overclock, but for a gaming PC, a work desktop, or a laptop refresh it delivers the Noctua reliability people expect.

Against the H2, the H1 is the simpler tube, but it keeps the easy dry cleanup and the same 3.5 g capacity. Against the MX-4, it is the choice for someone who wants a Noctua paste and values a simple cleanup over the lowest possible cost. We keep the H1 around for routine builds because it is hard to mess up and easy to clean up afterward.

Corsair built the XTM70 around low viscosity and a high-wattage ceiling, and that combination is what makes the kit easy to recommend. The 3 g tube is rated for processors up to 250W TDP and higher, and the paste is designed to spread evenly and cleanly with the included applicator kit. You also get three cleaning wipes, which turns a bare tube into a complete repaste kit.

Low viscosity is the feature we appreciate most. Thick pastes can be a wrestling match on a large heatspreader, especially for someone who does not repaste often. The XTM70 flows more readily, so it is easier to lay down an even layer and seat the cooler without trapping air. The included template helps position the paste on common CPU mounts, and the wipes make cleanup straightforward. For a high-end desktop or an AIO cold plate, that is a sensible combination.

It is not the highest-performance paste here; the Kryonaut and MX-7 are the ones we choose when the goal is maximum thermal headroom. The XTM70 is better understood as a premium convenience pick: it is easy to apply, it is rated for high-power chips, and it comes with the accessories you need. On a standard gaming CPU, the difference between this and the top performers is likely to matter less than getting a clean, even application.

It makes the most sense for a single high-wattage build, especially if you are not a frequent builder. The 250W+ rating is headroom, not a requirement; a 65W CPU does not need this paste. But the low viscosity and complete kit make it a friendly choice for a high-end first build. That is a narrow reason to buy, and it is the one that makes sense here.

The template set is the first clue that the JLJ thermal paste is aimed at people who want help getting an even coat. The 3 g tube comes with two applicators, four application templates, and a cleaning wipe, which is a lot of hand-holding for a budget paste. JLJ also makes the compound non-conductive and lists it for CPUs, GPUs, and PS4 consoles, so it covers the common first-repaste jobs.

The templates suit a laptop or console where the heatspreader is small and a stray blob is annoying. The paste spreads easily enough, and the included wipe is enough for a single cleanup. It is not a premium performance paste; the MX-7 and Kryonaut are the ones we choose for high heat or overclocking. But for a basic desktop, a PS4 refresh, or a first attempt where the goal is a clean application and a lower temperature, the JLJ kit does the job without asking you to buy tools separately.

The catch is that the kit is built to a price. The 3 g tube will not last through many builds, and the single wipe means you need your own cleaning supplies if you make a mistake. We also treat the templates as a guide rather than a guarantee; you still need to check that the cutout matches your CPU or GPU. For the money, though, it is the most approachable starter kit here, and the extras make a first repaste feel less risky.

A 10 g tube is a different kind of purchase from the small syringes most people start with. The Kingpin Cooling KPx is the largest tube in this group, and it is aimed at people who repaste more than one machine or want a long-running supply. Kingpin lists low thermal resistance and compatibility with desktops, laptops, and servers, which fits the bulk-tube role.

The KPx earns a place in a workshop drawer because it removes the mental math of whether you have enough paste left. The compound spreads with a little pressure and a spreader, and it performs like a high-end paste rather than a budget filler. On a CPU or GPU with a good cooler, it gives you the thermal headroom you expect from a premium tube. It is not a magic upgrade for a weak cooler.

The value case depends on how many repastes you have ahead of you. A 10 g tube is a lot for a single gaming PC, but if you maintain a few systems, refresh consoles, or build for friends, the capacity starts to make sense. The tube is also a sensible choice for a small repair bench because you are less likely to run out mid-job.

We recommend it for the buyer who wants one large tube and will use it across several machines. For a single build, the MX-4 or NT-H1 is the simpler buy. The KPx is the paste you keep around, not the one you buy for one afternoon.