Fitting a socket accessory sounds like a five-minute detour compared to a full cooler swap, until the actual steps line up next to each other. Removing the AM5 retention arms to install a Pulsar contact frame means the cooler comes off first, and a cooler that comes off a processor should never go back on with the same old paste underneath it.

Quick Answer

Installing the AsiaHorse Pulsar frame requires removing the cooler to access the stock AM5 retention arms it replaces, and once that cooler is lifted the thermal paste bond is broken. Ordering fresh compound alongside the R299 frame avoids a second interruption to the build, since re-pasting is the correct step after any cooler removal, not an optional extra.

🔩 What removing the retention arms actually involves

AM5 boards secure the cooler through a set of stock retention arms that clamp around the socket. To fit the Pulsar frame in their place, the cooler has to be lifted off the processor entirely, since the arms sit directly underneath it. That is not a job that can be done with the cooler left in position - there is no partial-access route to hardware that lives beneath the thing you are trying to remove. Once the arms are off, the frame goes on in their place: an all-aluminium anodised piece fastened with four included screws, tightened using the hex wrench that comes in the same box.

Why the paste layer cannot survive this step

Thermal compound works because it fills microscopic gaps between two flat metal surfaces - the processor's heat spreader and the cooler's contact base - eliminating air pockets that would otherwise insulate against heat transfer. That contact is a physical seal, and lifting the cooler off breaks it immediately. Old paste that has been disturbed does not reseal itself when the cooler goes back down; it smears unevenly, potentially leaving gaps on one side and excess buildup on the other. Reusing disturbed paste is a known way to get worse thermal performance than before the job started, not the same performance.

The correct sequence once the cooler is off

With the cooler removed and the stock retention arms out, the accepted practice is to clean both surfaces - the processor's heat spreader and the cooler's base - removing every trace of the old compound before anything goes back together. Isopropyl alcohol and a lint-free cloth handle that cleanly in most cases. Only once both surfaces are bare metal does the Pulsar frame get fitted with its four screws, followed by the cooler being remounted with a fresh, appropriately sized application of new paste. Skipping the cleaning step and applying new paste over old residue is a shortcut that tends to undermine the whole point of re-pasting in the first place.

🧴 Why this belongs on the same order

Because the cooler-off step is unavoidable for fitting the frame, and because that same step makes fresh paste necessary, ordering both together removes a second wait between deciding to do the job and actually finishing it. The frame itself does not include thermal paste - the box holds the frame, four screws, and the hex wrench, nothing more - which means anyone who orders it alone and only discovers the gap once the cooler is already off is stuck mid-build. Evetech's thermal solutions range covers that need directly, and pairing it with the frame order avoids the awkward pause.

How much paste one job actually needs

A single application typically uses a pea-sized or thin-line amount depending on the compound and the applicator, which means one tube comfortably covers this job with plenty left for future cooler work - a second cooler swap, a future upgrade, or reapplying if a first attempt spreads unevenly. It is a small enough cost relative to the R299 frame that skipping it to save money rarely makes sense.

🏗️ Where a new build changes the picture

Not every situation needs paste bought separately. A brand-new cooler purchased alongside a fresh AM5 build often arrives with compound pre-applied to its base, or with a syringe included in the box. In that case the gap this article describes may already be covered by what shipped with the cooler, and the frame fitting simply happens as part of the wider build rather than as a standalone re-paste job. It is worth checking what a specific cooler includes before assuming compound needs to be sourced separately - browsing Evetech's cpu coolers listings will usually show whether paste is bundled.

Frequently Asked Questions

Why does the cooler have to come off?

Because the stock AM5 retention arms sit beneath the cooler on the board, and the frame takes their place.

Can old paste be reused?

Once a cooler is lifted the contact is broken, so the correct practice is to clean both surfaces and apply fresh compound.

Is paste included with the frame?

No. Inside the box are the frame, four mounting screws, and a fitted hex wrench - paste is explicitly excluded.

How much paste does one refit need?

A small amount, so a single tube typically covers several applications and is worth having for future work anyway.

What else might be needed?

Something to clean the old compound off both the processor and the cooler base before the new application.

Does this change if the build is new?

A new cooler usually arrives with paste applied or supplied, in which case the gap may already be covered.

Can the frame be fitted without disturbing paste?

No, since it replaces hardware beneath the cooler, so the cooler must be removed for access.

Fitting a socket accessory on an AM5 board? Stock up on thermal solutions before the cooler comes off, so the whole job finishes in one sitting.