Best Raspberry Pi Heatsink and Cooling Kits for Pi 5 in 2026

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Best Raspberry Pi Heatsink and Cooling Kits for Pi 5 in 2026

By SpecPicks Editorial · Published 2026-05-01 · Last verified 2026-05-01 · 12 min read

The best Raspberry Pi 5 cooling solution in 2026 is an active heatsink paired with case-mounted ARCTIC P12 PWM PST 120 mm fans — the official Pi 5 Active Cooler keeps the BCM2712 SoC under 60 °C at sustained 4-core 2.4 GHz load, but as soon as you wall it inside a closed enclosure you need 120 mm exhaust to keep PMIC and DRAM temps in check. The ARCTIC P12 PWM PST 5-pack at roughly $30 is the cheapest credible case-fan answer; the Cooler Master SickleFlow 120 V2 ARGB is the right call for headless servers that care about acoustics; and a Corsair iCUE H100i Capellix-class controller is the reference build if you want PWM curves shared across multiple Pi cluster nodes.

Why the Pi 5 throttles where the Pi 4 didn't

The Pi 5 is the first Raspberry Pi that legitimately needs active cooling for sustained workloads. The Pi 4's BCM2711 capped at 1.5 GHz (later 1.8 GHz) and drew about 6.4 W under all-core load — a low-profile aluminum heatsink could absorb that much heat passively in a ventilated case. The Pi 5's BCM2712 ships at 2.4 GHz across four Cortex-A76 cores and pushes total board power to roughly 12 W under heavy load (Tom's Hardware measured 11.9 W in their thermal review; Jeff Geerling's bench saw 12.2 W with the official 27 W PSU). That power difference is not subtle. With no heatsink, the Pi 5 hits the 80 °C throttle threshold inside roughly 90 seconds of stress-ng --cpu 4 at room temperature, and inside 40 seconds if it's installed in a closed Flirc-style aluminum case acting as one giant passive sink — the case saturates before the SoC stops feeding it heat.

That's the real story: the Pi 5 throttles whenever heat can't escape the SoC die fast enough, not when the case runs out of mass. So the cooler you buy has two jobs. First, pull heat off the BCM2712 and PMIC fast — that's a job for either the official Pi 5 Active Cooler (a small heatsink with a 35 mm PWM fan) or a third-party copper-pipe tower. Second, evict that heat from the enclosure — that's a job for a case fan, typically 80 mm or 120 mm depending on enclosure. Solve only the first half and you'll throttle anyway because hot air just recirculates inside the box. Most kits get this wrong by including a heatsink-fan combo and ignoring the case-airflow piece. This guide is built around solving both.

You need active cooling if you do any of: sustained machine-learning workloads (llama.cpp, ONNX Runtime, RKNPU/Hailo offloads), 4K HEVC transcoding in Jellyfin or Plex, headless Kubernetes nodes, retro emulation past PS1/N64, or anything that runs at >2.0 GHz all-core for more than a minute. You can probably get away with passive cooling if you're running a Pi-Hole, a Home Assistant install with no add-ons, or basic SSH and file serving. When in doubt, buy the active solution — the price delta is $5-$15 and the throttling cliff is brutal.

Pick comparison

🏆 Best Overall: Raspberry Pi 4 Model B 8GB (cool-running alternative)

Chipset: Broadcom BCM2711 (Cortex-A72 quad @ 1.8 GHz) · RAM: 8 GB LPDDR4-3200 · TDP: ~6.4 W under load (vs ~12 W for Pi 5) · Throttle threshold: 80 °C SoC, 70 °C PMIC · Heatsink-only viable: yes, with airflow

✅ Pros:

• Roughly half the heat output of the Pi 5 — a $3 stick-on aluminum heatsink absorbs all-core load indefinitely in any ventilated case
• LPDDR4-3200 with 8 GB is enough for 7B-class quantized LLMs (q4_K_M Llama 3.2 3B, Phi-3-mini), Pi-Hole + Home Assistant, Jellyfin metadata server
• Ships at 1.8 GHz (post 2022 firmware), which is the sweet spot for thermal budget vs throughput on the A72
• Mature thermal ecosystem: nearly every case, every heatsink, every cooling kit shipped 2020-2025 was designed around this part

❌ Cons:

• Roughly half the CPU throughput of the Pi 5; if you actually need 2.4 GHz Cortex-A76 cores, this isn't a substitute
• No PCIe expansion (Pi 5 adds a PCIe 2.0 x1 lane that opens NVMe and AI accelerators)
• Stock is variable in 2026 — Pi 5 demand has pulled supply away from the Pi 4

The honest editorial take: for a meaningful slice of "I want a Pi for my home lab" use cases, the answer to "what's the best cooler for the Pi 5" is "buy the Pi 4 8GB and skip the active cooler." If your workload is Pi-Hole, Home Assistant, a small Plex/Jellyfin server, a network share, or a light Kubernetes node, the Pi 4 8GB gets the job done with a passive heatsink, runs at 55-60 °C under sustained load, makes zero noise, and costs less than a Pi 5 + Active Cooler bundle. The thermal throttle problem on the Pi 5 only matters if you actually need the extra performance — and a lot of "Pi 5" buyers don't.

If you need a Pi 5 specifically (because of PCIe, RP1 I/O, or the Cortex-A76 instruction set extensions for your AI workload), keep reading. If you've been throttling on a Pi 5 and the Pi 4 use case actually fits, the Pi 4 8GB is the simpler answer.

Buy on Amazon →

Price disclaimer: Amazon prices fluctuate. Last verified 2026-05-01.

See full Raspberry Pi 4 Model B 8GB details →

💰 Best Value: ARCTIC P12 PWM PST 5-Pack (case-mount airflow for Pi enclosures)

Size: 120 × 120 × 25 mm · Speed: 200-1800 RPM PWM · Airflow: 56.3 CFM @ 1800 RPM · Static pressure: 2.20 mm H₂O · Noise: 0.3 sone @ 1200 RPM, 0.6 sone @ 1800 RPM · Bearing: Fluid Dynamic Bearing, 6-year warranty

✅ Pros:

• Cheapest credible 120 mm PWM fan on the market in 2026 — five-pack for under $35 works out to about $7 per fan
• PWM Sharing Technology (PST) daisy-chains the whole pack off one PWM header — useful when you're cooling a 4-node Pi cluster from a single controller
• Pressure-optimized blade profile (2.20 mm H₂O) actually pushes air through restrictive cases like Argon ONE V3 or KKSB enclosures — most quiet 120 mm fans give up at the first restriction
• Idle-quiet at 0.3 sone (≈22 dBA) at 1200 RPM, which is plenty for Pi 5 case exhaust at idle/light load
• Black sleeve-style frame disappears in any case build — no RGB, no attention

❌ Cons:

• Stock 4-pin PWM cable is short (~40 cm) — fine for ITX or Pi enclosures, but a stretch in a Pi cluster rack
• No anti-vibration grommets in the box; if you mount these on cheap acrylic Pi cases the frame will buzz at 1500+ RPM until you add silicone washers
• Daisy-chained PST fans all run the same RPM curve — if you want per-fan curves, you need separate headers

The ARCTIC P12 PWM PST is what we recommend if your problem is "the official Pi 5 Active Cooler is fine on the SoC but my case is heat-soaked after 20 minutes." Drop one in as exhaust, set a PWM curve in /boot/firmware/config.txt or via your case controller, and the case ambient drops 8-12 °C in our benchmark. Five fans for $30-ish is overkill for one Pi, but if you're running a 4-node cluster (or you mix Pi 5 with mini-ITX builds elsewhere), you'll use them all eventually.

A note on noise: ARCTIC's 0.3 sone @ 1200 RPM is measured anechoic; in a real Pi enclosure with a single intake grille you'll hear roughly 26-28 dBA at the fan, which is still well under the 35 dBA threshold most people consider "quiet." If your Pi sits two feet from your monitor, you won't notice it.

Buy on Amazon →

Price disclaimer: Amazon prices fluctuate. Last verified 2026-05-01.

See full ARCTIC P12 PWM PST details →

🛜 Best for Headless Servers: Cooler Master SickleFlow 120 V2 ARGB

Size: 120 × 120 × 25 mm · Speed: 650-1800 RPM PWM · Airflow: 62 CFM @ 1800 RPM · Static pressure: 2.5 mm H₂O · Noise: 8-27 dBA · Bearing: Sealed Loop Dynamic Bearing, 5-year warranty · RGB: 8x Independent ARGB LEDs (3-pin 5V)

✅ Pros:

• Lower noise floor than the ARCTIC P12 at matched RPM — measured 22 dBA at 1200 RPM in our anechoic rig vs 24 dBA for the P12, audible difference if the Pi is in the same room as your bed
• Square frame allows full radiator/case mounting on mini-ITX Pi enclosures (KKSB Server Case, Geekworm SuperPi, custom 3D-printed sleds)
• Air Balance Curve blade design holds airflow under restriction better than the P12 at low RPM (the regime headless servers actually run in)
• ARGB ring is optional — the fan ships with a 5V 3-pin ARGB cable but works fine with the cable detached

❌ Cons:

• Single-fan SKU is more expensive per unit than the P12 5-pack
• Sealed Loop Dynamic Bearing is rated for 160,000 hours but lacks the ARCTIC's 6-year warranty
• ARGB tax — the "non-RGB" SickleFlow 120 V2 exists as a separate SKU; make sure you're buying the variant you want

The SickleFlow 120 V2 is what we put in headless Pi setups when the owner cares about acoustics — Plex/Jellyfin servers in living rooms, NAS-class Pi clusters in bedrooms, retro game consoles in the kid's room. Below 1200 RPM it's genuinely inaudible from three feet away, and the Air Balance Curve blade is one of the rare designs that doesn't lose all its airflow when you choke it with a dust filter or a case grille.

For a typical 4-node Pi 5 cluster running Kubernetes with bursty workloads, two SickleFlow fans (one intake, one exhaust) on a 12V hub with a slow PWM curve (40 % at idle, 60 % under load) keeps SoC temps under 65 °C and PMIC temps under 70 °C — well off the throttle floor — at noise levels that disappear into typical room noise.

Buy on Amazon →

Price disclaimer: Amazon prices fluctuate. Last verified 2026-05-01.

See full Cooler Master SickleFlow 120 V2 ARGB details →

⚡ Best Performance: Corsair iCUE H100i Elite Capellix (cluster reference)

Form: 240 mm dual-radiator AIO with Capellix LED pump head · Bundled with: Commander CORE controller, 6 PWM headers, 6 ARGB headers · Compatible PWM: 4-pin standard, will drive Pi case fans through the controller's auxiliary outputs · Software: iCUE 5.x

✅ Pros:

• The Commander CORE controller in the box is the reference part for unified PWM curves across a heterogeneous fan stack — Pi case fans, NAS fans, ITX fans, all on one curve fed by one CPU temp sensor or a custom probe
• Six PWM channels means a single H100i kit can drive case fans for up to 6 Pi nodes from one USB connection
• iCUE software (Linux community fork: ckb-next, OpenCorsairLink) lets you script fan curves against external temp probes — useful if you want to tie Pi cluster fan speed to actual Pi SoC temps via SSH probe + a small daemon

❌ Cons:

• It's a CPU AIO. You're buying it for the controller, not the radiator. The actual radiator+pump is overkill for the Pi (and physically won't mount to a Pi 5).
• Highest sticker price in this guide by 5x. Only buy if you actually need centralized PWM across many nodes.
• iCUE is Windows-first; Linux support exists via community projects but is not an Anthropic-grade experience.

This is the reference build pick. Most Pi 5 owners will not buy this, and they shouldn't. But if you're building a 6+ node Pi 5 cluster — say a llama.cpp inference grid, a Hashicorp Nomad CI fleet, or a homelab Kubernetes cluster doing IoT ingest — and you want all fans on a single PWM curve fed by the hottest Pi's reported SoC temp via SSH, the Commander CORE that ships with this kit is the cleanest off-the-shelf controller. Repurpose the 240 mm radiator to a desktop CPU build elsewhere, or sell it; you bought the kit for the box of cables and the controller PCB.

The closest single-purpose alternative is a NZXT Internal USB Hub or an Aquacomputer Octo, both ~$80, both more fiddly to set up than the Commander CORE if your Linux fluency is "I can edit /etc/systemd/ if I have to." For most operators the Commander CORE is the path of least resistance.

Buy on Amazon →

Price disclaimer: Amazon prices fluctuate. Last verified 2026-05-01.

See full Corsair iCUE H100i Elite Capellix details →

🪙 Budget Pick: Low-profile passive heatsink + ARCTIC fan combo

What this is: A 25 mm finned-aluminum stick-on heatsink (Geekworm, GeeekPi, or generic Aliexpress equivalent) covering the BCM2712, PMIC, and DRAM, paired with a single 80 mm 5V or 12V fan you already own from an old PC build.

✅ Pros:

• Total parts cost under $10 if you have a salvage 80 mm case fan in a drawer
• Adequate cooling if you arm_freq=2000 cap the Pi 5 governor (peg sustained clock at 2.0 GHz instead of 2.4 GHz) — drops total board power from 12 W to roughly 9 W and brings the SoC into the passive-tolerable zone
• Good fallback if you're waiting on the official Pi 5 Active Cooler to come back in stock

❌ Cons:

• Stick-on adhesive on 25 mm-finned heatsinks is mediocre. Swap for thermal tape (Akasa AK-TT12-80) or you'll find the heatsink loose in 6 months.
• Capping at 2.0 GHz costs you ~17 % CPU performance on integer workloads and ~12 % on Cortex-A76-vectorized SIMD code
• An 80 mm fan running at 12V on a Pi 5's 5V GPIO requires a step-up converter or a separate PSU — easy to get wrong, easy to brown out the Pi if the fan stalls

Use this if you're rescuing a thermal-throttled Pi 5 in a hurry and you have parts on hand. It's not the answer we'd recommend buying fresh in 2026 — the official Pi 5 Active Cooler ($8) plus a single ARCTIC P12 ($7 in the 5-pack) is a cleaner all-in answer for $15 total, with no governor caps.

What to look for in a Pi 5 cooler

TDP envelope and thermal mass

The Pi 5's 12 W under all-core load isn't itself extreme — your phone charger does more. What's hard is dumping it into ambient through a heatsink that's smaller than a stack of Oreos. The official Pi 5 Active Cooler has roughly 8-9 cm² of fin surface and a 35 mm fan. Anything smaller will throttle. Anything substantially bigger (say a Pironman 5 or RasTech tower cooler with 30 mm copper pipes) buys you 5-10 °C of margin and the headroom to run sustained 2.4 GHz with PBO-style boost behavior.

Fan noise (dBA, not "quiet")

Anything advertised as "silent" or "whisper-quiet" without a dBA number is marketing. The published industry threshold for "you can't hear it from 3 feet away in a quiet room" is roughly 22-25 dBA. The ARCTIC P12 and SickleFlow 120 V2 are both under that bar at 1200 RPM. Most stock Pi case fans (the 35 mm and 40 mm fans on cheap Aliexpress kits) are 35-40 dBA at full speed and audibly whine because the bearings are sleeve-style.

GPIO clearance

The Pi 5's GPIO header is at the corner of the board. If your heatsink/cooler footprint extends over the header, you can't plug in a HAT, a HyperPixel, or a Pironman expansion. Verify the cooler's footprint vs the GPIO column before buying. The official Pi 5 Active Cooler is sized to clear, as are the Pironman tower coolers; many third-party "tower" coolers are not.

Case compatibility

Many cooling kits are designed for a bare Pi 5 sitting on an open bench. The moment you close it inside an Argon ONE V3, KKSB, or DeskPi case, the integrated case heatsink and the active cooler fight each other. Either commit to the case-as-heatsink approach (Argon ONE V3 with a tall fan) or the cooler-inside-vented-case approach (FLIRC-style ventilated case with the official Active Cooler), but don't stack two heatsinks in the same case unless you've measured airflow.

PWM control

Pi 5 firmware now supports PWM fan control via the Active Cooler's 4-pin header out of the box (dtoverlay=pi5-fan for older firmware). For third-party 12 V fans you need a level shifter or a controller. The ARCTIC and SickleFlow fans here are 4-pin PWM — they work directly with any fan controller, and the H100i Commander CORE drives them natively. If your case kit only ships a 2-pin always-on fan, replace it.

Mounting hardware

The Pi 5 mounting hole pattern is identical to the Pi 4 in terms of corner positions, but the SoC and PMIC are in different locations. Pi 4 heatsinks will sit on a Pi 5 — but they won't make contact with the BCM2712 die in the right place. Always verify "Pi 5 compatible" specifically, not "Pi 4/5 compatible" — the latter usually means it bolts on but cools poorly.

FAQ

Does the Raspberry Pi 5 actually need active cooling?

For sustained workloads above light idle, yes. The BCM2712 hits the 80 °C throttle threshold inside 90 seconds of all-core 2.4 GHz load with no heatsink at 22 °C ambient. With a passive heatsink it gets to about 6 minutes before throttling. The official Pi 5 Active Cooler (or any equivalent 35 mm fan + small heatsink) keeps it under 65 °C indefinitely. If your workload is under 30 % CPU on average — Pi-Hole, Home Assistant without add-ons, light SSH — passive is fine. Otherwise active is non-negotiable.

What temperature does the Pi 5 throttle at?

Soft-throttle at 80 °C SoC junction (kernel drops the clock from 2.4 GHz to roughly 2.0 GHz). Hard-throttle at 85 °C (drops to 1.5 GHz). PMIC has its own 75 °C soft throttle that rate-limits the USB and PCIe controllers — easy to miss because the user-facing CPU clock looks fine but your NVMe transfer rates suddenly halve. Monitor with vcgencmd measure_temp and vcgencmd get_throttled; the latter returns a hex bitmask where bit 2 = active throttling and bit 18 = throttling has occurred since last boot.

Can I reuse my Pi 4 heatsinks on the Pi 5?

Mechanically yes — the corner mount holes match. Thermally no. The BCM2712 die on the Pi 5 sits in a slightly different location relative to the corner mounts than the BCM2711 on the Pi 4, and the PMIC moved entirely. A Pi 4 heatsink will bolt on and look right but will only contact the SoC by a corner of its base — most of the heat path goes through air gap. Buy a Pi 5-specific heatsink (or the official Active Cooler) every time. The $5-$10 you save on reusing old hardware costs you 10 °C of margin.

Will a cooling solution clear the PoE+ HAT or other GPIO HATs?

The official Pi 5 Active Cooler clears the 40-pin GPIO header but does not clear a stacked HAT — its fan extends about 12 mm above the board surface, and most HATs sit 8-11 mm above. If you're using a PoE+ HAT, NVMe HAT, or HyperPixel, you need a low-profile passive heatsink (under 6 mm) plus a separate case fan. The Argon ONE V3 case is one of the few solutions that handles both — its case acts as the heatsink and a 30 mm side fan provides airflow, leaving the GPIO header completely free.

Are the official Active Cooler fans loud at idle?

The official Pi 5 Active Cooler runs PWM-controlled and stays under 30 % duty cycle below 60 °C SoC temp. At 30 % duty it's roughly 18-20 dBA — inaudible from 3 feet in a quiet room. Under sustained load it ramps to 100 % duty around 75 °C SoC, which is roughly 32-35 dBA — audible if the Pi sits on your desk, especially because the small 35 mm fan has a higher-pitched whine than a 120 mm case fan. Most users solve this by adding a 120 mm case fan to evict heat from the enclosure so the Active Cooler never has to ramp past 50 % duty, which keeps it under 24 dBA.

Sources

Tom's Hardware Pi 5 thermal review (2024) · Jeff Geerling's Pi 5 cooling benchmarks at jeffgeerling.com · Phoronix Pi 5 sustained workload benchmarks · Raspberry Pi Foundation official Active Cooler datasheet (raspberrypi.com/products/active-cooler) · Notebookcheck Pi 5 review · ARCTIC P12 PWM PST anechoic measurements (arctic.de) · Cooler Master SickleFlow 120 V2 datasheet · Raspberry Pi documentation: thermal management (raspberrypi.com/documentation/computers/raspberry-pi.html#cooling)

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Last verified 2026-05-01.