Do I Need Extra Thermal Paste for Gaming Build? An Honest Answer

The Short Answer

No, you do not need extra thermal paste for most new gaming builds — with one condition: you are installing a brand-new CPU and a brand-new CPU cooler, and you plan to mount the cooler once and leave it alone.

Nearly every new retail CPU cooler in 2026, whether it is the stock cooler included with an AMD or Intel CPU or an aftermarket tower or AIO, comes with thermal paste either pre-applied on the cold plate or included as a small syringe in the box. That factory supply is enough for one proper installation. You only need to buy an extra tube like Thermal Grizzly Kryonaut if you expect to remount the cooler, reuse an older cooler, overclock heavily and repaste often, or want a premium paste on hand for future maintenance.

As an Amazon Associate we earn from qualifying purchases at no extra cost to you.

#1 Pick

Thermal Grizzly Kryonaut – 1 Gram Thermal Paste Extremely High Performance

Check Price on Amazon →

#2 Pick

Thermal Grizzly Kryonaut – 1 Gram – Extremely High Performance Thermal Paste + 12 Cleaning Wipes 6 Wet & 6 Dry – for Demanding Applications and Overclocking CPU/GPU/PS4/PS5/Xbox

Check Price on Amazon →

What You Actually Get

When you buy a new processor and cooler, you are getting thermal interface material in one of three ways:

1. Pre-applied paste on the cooler: Most air coolers and AIO liquid coolers have a gray square or three lines of paste already applied to the copper cold plate, covered by a plastic guard. This is the most common setup for coolers from brands like Noctua, be quiet!, DeepCool, Corsair, and NZXT, as well as AMD Wraith and Intel Laminar stock coolers. It is designed for a single installation. Once the cooler touches the CPU heat spreader, that pattern spreads under mounting pressure.

2. Small syringe included in the box: Many aftermarket coolers include a 1-gram to 2-gram syringe in the accessory bag, plus a spreader or stencil. A 1-gram syringe is enough for 2 to 3 standard desktop CPU applications if you use a pea-sized dot of about 0.1 to 0.2 grams per application. That covers a typical 45mm x 37.5mm AM5 integrated heat spreader or a 45mm x 45mm LGA1700 / LGA1851 heat spreader with room to spare.

3. Paste on a tray CPU with no cooler: If you buy a tray or OEM CPU or a high-end chip that ships without any cooler, you will get no paste at all. In that case, you must supply your own. This is where an extra purchase is not optional.

The two reference products for this decision are both 1-gram tubes of Thermal Grizzly Kryonaut. The standalone 1-gram tube is priced around $8, while the bundle with 12 cleaning wipes (6 wet and 6 dry) is around $11. The paste itself weighs just 3 to 5 grams total for the syringe and cap, and the 1-gram fill will handle a full gaming build plus one or two repastes. The wipe bundle adds individually wrapped isopropyl wipes that make cleanup faster, but the paste inside is identical.

For context on sizing, a gaming build using a mid-tower case with a 120mm or 240mm to 360mm AIO typically draws 550 to 850 watts from the power supply, and the CPU itself will be in the 65 to 170 watt TDP range. The thermal paste layer you apply ends up only 0.03 to 0.05 mm thick after mounting pressure of 40 to 60 PSI from the cooler bracket. You are not filling a gap; you are filling microscopic imperfections between two metal surfaces.

Pros

• Peace of mind for first-time builders: Having a fresh, high-quality 1-gram tube on hand means a mistake during mounting does not stop your build. If you lift the cooler, smear the pre-applied paste, or set the cooler down crooked, you can clean it off and reapply without a trip to the store.
• Better long-term maintenance: Thermal paste does not last forever. Most pastes perform well for 2 to 4 years before drying and pumping out slightly from thermal cycles. Owning a tube lets you repaste during a deep cleaning or a case swap without buying a new product.
• High performance for demanding builds: Premium pastes like Kryonaut are designed for demanding applications, including overclocking and high heat flux on GPUs and CPUs. While we are not citing lab deltas, enthusiast-grade pastes as a category are formulated for lower thermal impedance and easier spreading than the generic silicone paste included with budget coolers.
• Useful beyond the CPU: That same 1-gram tube can be used for a graphics card repaste, a PlayStation 5 or Xbox Series X teardown, or a laptop repaste down the road, which makes the small upfront cost more versatile than a single-use packet.
• Small, easy to store, long shelf life: An unopened syringe kept capped and stored at room temperature typically lasts 2 to 3 years. It takes up almost no space in a drawer, unlike a spare cooler or other spare parts.

Cons

• Unnecessary cost for a one-and-done build: If you are building once with all-new parts and you mount the cooler correctly the first time, that around $8 to around $11 tube will sit unused. The included or pre-applied paste will perform safely within spec for normal gaming loads.
• Extra step and risk if you replace good paste: Swapping a perfectly applied pre-applied pad for an aftermarket paste on day one adds a cleaning step and a chance to use too much or too little. For most gamers, that change yields no noticeable difference in everyday frame rates or fan noise.
• Very small quantity: One gram is easy to waste. A single heavy-handed application can use 0.3 to 0.5 grams, leaving you with less for future repastes. The wipe bundle at around $11 costs more, and if you already have 90%+ isopropyl alcohol and lint-free cloths at home, those wipes are redundant.
• Not a fix for bigger cooling problems: If your case has poor airflow, your cooler is undersized for a 150+ watt CPU, or your fan curves are too conservative, new paste will not solve high temperatures. A $35 to $50 cooler upgrade or adding a $10 to $15 case fan often matters more than the paste brand.

Who Should Buy It

Buy an extra 1-gram tube before you start if any of these describe you:

You are reusing a cooler from a previous build. Used cold plates must be cleaned with isopropyl alcohol and fresh paste applied; never reuse old, dried paste. You are buying a tray CPU or a CPU that does not include a cooler and your chosen cooler does not include a syringe. You plan to overclock or undervolt and expect to test multiple mountings. You want to keep a small toolkit for console or GPU maintenance over the next few years. Or you simply want insurance as a first-time builder who would rather have it and not need it than need it mid-build on a weekend.

In these cases, the standalone 1-gram Kryonaut for around $8 is the most economical choice if you already have cleaning supplies. Get the around $11 bundle with 12 wipes if you do not have high-purity isopropyl alcohol and lint-free wipes at home and want a clean, convenient repaste kit in one box.

Who Should Skip It

Skip the extra purchase if you bought a retail boxed CPU and a new aftermarket air cooler or AIO that already has paste pre-applied or includes a syringe. This covers the majority of straightforward gaming builds with a Ryzen 5/7 or Core i5/i7, a 120mm to 240mm tower or AIO, and no plans to remove the cooler for at least a year.

You can also skip it if your budget is tight and better spent elsewhere. An extra $9 to $12 put toward a second case fan, a larger SSD, or a cooler with a bigger heatsink will affect gaming performance and thermals more than swapping paste on day one. You can always buy a tube later when you actually need to repaste; it is widely available and does not require planning months in advance.

Cheaper Alternatives

FAQ

How much thermal paste do I actually need for one gaming CPU?

A pea-sized dot of 3 to 5 mm in diameter in the center of the heat spreader, about 0.1 to 0.2 grams, is enough. Mounting pressure will spread it to cover the 30mm x 30mm to 45mm x 45mm contact area. Do not spread it edge-to-edge manually; too much paste can spill over the sides, and too little leaves dry spots.

Can I reuse thermal paste if I remove the cooler?

No. Once the cooler has been seated and then lifted, break the seal, clean both surfaces fully with 90% or higher isopropyl alcohol and a lint-free wipe, let them dry, and apply fresh paste. Reusing paste traps air bubbles and creates uneven coverage, which raises temperatures and can cause thermal throttling under gaming loads.

Is the pre-applied paste on a new cooler good enough for gaming?

Yes, for stock and mild overclocked gaming. The factory paste or included syringe is rated to handle the full TDP range of the cooler it ships with, typically 125 to 250 watts of cooling capacity for towers and 150 to 300 watts for 240mm to 360mm AIOs. You do not need to replace it on day one for reliability. Enthusiast paste is a convenience and maintenance item, not a requirement for stable gaming temperatures.

How long does thermal paste last before I need to repaste?

For a desktop gaming PC that runs 2 to 6 hours per day, plan to check temperatures after 2 to 3 years. If CPU temps at idle climb 5 to 10 degrees Celsius higher than when new, or fans get noticeably louder at the same room temperature, it is time to clean and repaste. A single 1-gram tube stored capped will still be usable for that interval, but check that the paste extrudes smoothly and is not separated or hardened before reuse.