Do You Need Thermal Paste With a New Cooler? A 2026 Guide

When you install a new cooler, the thermal paste question is really a durability question: do you want to redo this job every year, or set it and forget it? ARCTIC MX-7 is built for the second camp. Its dense, high-filler formulation resists pump-out and dry-out across repeated heating and cooling cycles, so the bond line stays stable for the life of the build rather than degrading after a few seasons. That matters most right after a cooler swap, when you want the mount to perform consistently for the long haul, not just on day one. The paste is non-conductive, which gives extra confidence on tightly packed boards where a stray smear near a GPU or laptop component would otherwise be risky. The one thing to know going in: MX-7 cannot be manually spread like a typical paste. It self-levels under the pressure of the cooler mount, which actually removes guesswork like over-application or trapped air once you accept the method.

Product Details: Brand: ARCTIC, Model: ACTCP00091A, ASIN: B0FT2TC2NW, Quantity: 8g per tube, Weight: 13.7g

Compatibility: Desktop computers, CPUs, GPUs, gaming laptops, gaming consoles, graphics cards, and general thermal management applications

Physical Dimensions: 1 inch length x 0.6 inch width x 4.2 inches height

Key Properties: High-filler thermal compound, dense and highly viscous consistency, electrically non-conductive, non-capacitive, naturally self-leveling under pressure

Performance Rating: Rated 4.8 out of 5 stars based on extensive user feedback and professional testing in thermal cooling applications

Good fit if you're installing a new cooler and want a paste you won't have to think about again for years, especially on a primary gaming or workstation PC. Also fine for laptops and consoles given the non-conductive formula. Skip it if you want to manually control spread pattern and amount, or if you're doing a quick, budget-minded reapplication and don't need multi-year longevity.

A new cooler install is the natural moment to also clean off old paste residue, and this version pairs MX-7 with an included MX-Cleaner to cover both steps in one purchase. For anyone replacing a stock or worn-out cooler, that's a practical convenience: strip the old compound properly before the new mount goes on, rather than relying on isopropyl alcohol and a paper towel. The paste itself shares the same self-leveling, high-filler formulation as the standard MX-7, so once the new cooler applies pressure, it spreads evenly and resists pump-out and dry-out over repeated thermal cycles. That means the reapplication cycle this product supports should be a long one. The 4g size is sized for one or two systems, which fits a single cooler upgrade well without leaving you with excess paste to store. As with other MX-7 variants, manual spreading isn't part of the design, so proper mounting pressure is what activates the even bond line.

Product Dimensions: 4.13 x 0.47 x 0.77 inches

Weight: 0.282 ounces (4g)

Brand: ARCTIC

Model: ACTCP00092A

Properties: Electrically non-conductive, non-capacitive

Compatibility: CPUs, GPUs, laptops, gaming consoles, and all heat-dissipating electronics

Included Accessories: MX-Cleaner thermal paste remover

Best Sellers Rank: Number 5 in Silicon Grease category

Best for anyone doing a cooler swap who also wants to clean the old paste off first without buying cleaner separately. Good for single or dual-system use given the 4g size. Skip it if you already own a cleaning solution and only need paste, or if you manage multiple systems and would rather buy a larger tube to avoid repurchasing.

If the new cooler you're installing is meant to unlock serious thermal headroom, like for overclocking, the paste underneath it needs to keep pace. Thermal Grizzly Kryonaut Extreme is built around a 14.2 W/mK conductivity rating using nano-aluminum oxide particles, and users have reported temperature drops of 5 to 10 degrees versus standard compounds, which is the kind of difference that actually matters when a new cooler is being pushed hard. It also comes with a full prep kit: an ergonomic syringe for precise application and 12 cleaning wipes (wet and dry), so the whole mounting job, from removing old paste to applying the new, is covered in one package. The consistency is spreadable enough for careful, controlled application but thick enough that it won't run or overflow. The tradeoff is a shorter recommended lifespan of about 18 months before reapplication, and the 2g tube only covers one or two full applications, so it suits a single high-performance build rather than stocking up for several systems.

Thermal Performance: 14.2 W/mk thermal conductivity, 0 pS/m electrical conductivity, 130-180 Pa-s viscosity

Temperature Range: -250°C to +350°C for liquid nitrogen to extreme overclocking applications

Composition: Non-curing nano-aluminum oxide enhanced formula

Capacity: 2g with syringe applicator

Package Contents: 2g thermal paste, syringe with applicator tips, 6 wet cleaning wipes, 6 dry cleaning wipes, product registration certificate

Compatibility: CPU, GPU, PS4, PS5, Xbox, air coolers, water cooling, liquid nitrogen systems

Density: 3.76 g/cm3

Best for overclockers and performance-focused builders installing a new cooler who want the extra edge in temperature and the convenience of included cleaning wipes. Also useful if you want precise, hands-on control over paste application. Skip it if you want a paste that lasts years without reapplication, or if you need enough paste for multiple systems from one tube.

When you install a new cooler, the thermal paste you use is just as important as the cooler itself, and ARCTIC MX-7 is built for exactly that moment. Its performance-optimized viscosity and high filler content allow it to self-distribute evenly under the pressure of a cooler mount, so you get a thin, consistent bond line without fussing over manual spreading technique. That matters when you are already juggling brackets, screws, and backplates during a cooler swap. The paste's long-term stability also means you will not need to redo the job anytime soon, since it resists pump-out and drying across repeated thermal cycles. For anyone pairing a new cooler with a CPU or GPU that has been running hot, MX-7 is a straightforward way to make sure the upgrade actually delivers the temperature drops you are expecting, rather than being held back by an inferior paste.

Product Dimensions: 0.8 x 0.5 x 4.2 inches

Item Weight: 0.282 ounces (4g)

Manufacturer: ARCTIC

Model Number: ACTCP00090A

ASIN: B0FT2XSPSN

Key Properties: Electrically non-conductive, non-capacitive, high filler content, optimized viscosity formula

Compatibility: CPUs, GPUs, laptops, gaming consoles, and all electronic devices with thermal interfaces

Good for anyone installing a new CPU or GPU cooler who wants a paste that spreads itself correctly under mounting pressure, including gamers and content creators dealing with past thermal throttling. Skip it if you need to service several small devices from one syringe, since the 4g size is generous but not unlimited, or if you prefer manually spreading paste rather than relying on cooler pressure to distribute it.

Pairing a new cooler with the right thermal paste is where a lot of upgrades succeed or fall short, and Thermal Grizzly Kryonaut is designed for builders who want to get that pairing right. It comes with a syringe applicator and spatula, which take the guesswork out of applying paste evenly across a CPU or GPU before mounting a new heatsink. That precision pays off through strong thermal conductivity and stable performance at sustained temperatures up to 80°C, so the paste keeps working as hard as your new cooler does. The 1g size allows multiple applications, which is useful if you are testing different cooler mounts or reseating a few times to get the fit right. For overclockers and system builders installing a new cooler on a high-heat component, Kryonaut gives you professional-grade materials to match a professional-grade cooling upgrade.

Brand: Thermal Grizzly

Product Type: Thermal Paste (Silicon Grease)

Package Size: 1 gram

Item Weight: 1 g

Heatsink Material Compatibility: Aluminum

Product Dimensions: 0.04 x 0.04 x 0.04 inches

Application: CPUs, GPUs, and compatible cooling systems

Performance Temperature Range: Stable and effective up to 80°C

Included Accessories: Precision syringe applicator and spreading spatula

Suited to builders and overclockers installing a new cooler who want precise application tools and paste that holds up under sustained heat. A good fit if you plan to reseat the cooler more than once while dialing in the mount. Skip it if you want the lowest-effort option, since getting the best results takes careful application technique and attention during spreading.