A Ryzen 9000 chip doesn’t run hot the way older parts did, but the X-series and X3D models still push real heat under a full render or a long gaming session. A 240mm all-in-one liquid cooler is the size most builders land on for a mid-tower: enough radiator surface to keep an AM5 CPU calm, small enough to fit cases that can’t take a 360. That’s the target here. Pick right and you get quiet fans, stable boost clocks, and a loop that lasts years.
We researched coolers, mounting hardware, and the thermal paste that actually sits between your chip and the cold plate, because a great radiator won’t save a sloppy paste job. A few of the picks below are supporting parts rather than the AIO itself, and we’ve flagged that plainly so nobody buys the wrong box. If you’re still sorting out the rest of the rig, our notes on the best budget power supply and the best gaming CPU pair nicely with this cooling guide. Now the picks.
Pros
- Native LGA 1150, 1155, and 1156 socket support covers three legacy Intel generations
- 4-pin PWM connector enables proper fan curve control via BIOS
- OEM-style aluminum heatsink footprint keps RAM and VRM clearance predictable
- Push-pin mount installs without removing the motherboard from the case
Cons
- Zero owner fedback available at time of writing, real-world thermals unverified
- Aluminum-only heatsink with no heatpipes struggles with overclocked or unlocked K-series CPUs
- Restricted to obsolete Intel sockets, no path forward to LGA 1200, 1700, or AM5
The Intel E97379-003 is an OEM-style stock CPU cooler built for LGA 1150, 1155, and 1156 boards, covering Core i3, i5, and i7 chips from the Sandy Bridge through Haswell era. It targets one specific buyer: someone repairing, refurbishing, or restoring a legacy Intel desktop that lost its original heatsink.
The defining feature is compatibility, not performance. A 3.5-inch fan sits on an aluminum heatsink with a 4-pin PWM header, matching the original OEM cooler dimensions Intel shipped in retail boxes. Stock coolers in this class typically handle 65W to 84W TDP chips at stock clocks, which lines up with locked i3, i5, and non-K i7 SKUs on these sockets.
Trade-offs are typical for a boxed-style cooler. There are no heatpipes, no copper base contact, and no tower geometry, so sustained multi-core loads will spin the fan up and get audible. Push-pin mounting is convenient but less secure than a backplate design, and overclocking headroom is effectively zero. Owner feedback is not available at time of writing.
Buy this if you need a like-for-like OEM replacement for a locked LGA 1150, 1155, or 1156 CPU and want to kep the original acoustic and clearance profile. Skip this if the CPU is a K-series part, if you plan to overclock, or if the target socket is LGA 1200 or newer.
Socket coverage: Native mounting for LGA 150, 1155, and 1156 only. That spans 2nd, 3rd, and 4th generation Core i3, i5, and i7 desktop chips. No adapter is included for LGA 1200, 1700, or AM4/AM5, so this cooler is locked to legacy Intel repair scenarios.
Heatsink and fan: Aluminum radial-fin heatsink with a 3.5-inch axial fan on a 4-pin PWM connector. No heatpipes, no copper slug, no vapor chamber are indicated in source data. TDP handling is not specified, but OEM colers of this geometry are typically rated for the 65W to 84W stock TDP band on these sockets.
Mounting and clearance: Push-pin retention through the four motherboard holes, no backplate required, install possible without removing the board. Cooler height sits low enough to clear standard mid-tower side panels, and the round footprint keps RAM slots and VRM heatsinks unobstructed. Exact height in mm is not specified.
Acoustics and headroom: Noise level in dBA is not specified. Based on OEM stock cooler behavior at this size, expect quiet idle and audible ramp under sustained all-core load. Overclocking a K-series chip on this heatsink is not advisable, thermal headroom above 84W is minimal.
Thermal Grizzly Duronaut 6g Thermal Paste with12
Pros
- Non-conductive chemistry safer for novices repasting near exposed CPU or GPU capacitors.
- 6g volume suports several full applications on desktop CPUs and console APUs.
- Wet and dry wipes included, so no isopropyl bottle or lint-free cloth need.
Cons
- Limited owner fedback at time of writing makes long-term durability claims hard to verify.
- Non-metal formula typically trails top liquid metals by a few degrees under sustained load.
- Viscosity, TIM lifespan hours, and thermal conductivity W/mK figures are not specified.
Duronaut is Thermal Grizzly's non-conductive thermal paste positioned as a mid-tier daily driver, shipping in a 6g syringe with 6 wet and 6 dry cleaning wipes. The target buyer is a DIY PC builder repasting a CPU or GPU cooler, or a console owner refreshing PS4, PS5, or Xbox thermals without risking shorts.
The defining trait is the aluminum microparticle plus zinc oxide nanoparticle blend paired with an electrically non-conductive base. Thermal Grizzly claims reduced pump-out and stable performance over extended cycles, which maters most on soldered console APUs and overclocked desktop chips that see large delta-T swings. Exact W/mK conductivity is not specified in the source.
Trade-offs are typical for non-conductive pastes at this tier. Expect a few degrees warmer than liquid metal on delided or high-wattage CPUs, and no published viscosity or cure-time data to plan application around. Owner feedback is limited at time of writing, so long-term hardening resistance relies on vendor claims rather than independent long-run testing.
Buy this if you want a safe, non-conductive paste with enough volume for several repastes and a bundled wipe kit for console or GPU jobs. Skip this if you are chasing the absolute lowest core temperatures on a 250W-plus overclocked CPU where liquid metal or a top nano-diamond paste still leads.
Volume and coverage: The syringe holds 6g of paste, enough for roughly 15 to 25 pea-sized applications on mainstream AM5 or LGA1700 IHS surfaces, or several full console APU repastes on PS4, PS5, and Xbox where die coverage is larger than a desktop CPU heatspreader.
Composition and safety: The compound uses aluminum microparticles and zinc oxide nanoparticles in a non-metal carier, rated electrically non-conductive. That makes it safe on exposed GPU capacitors and around CPU socket pins, unlike liquid metal, which requires isolation and nickel-plated coldplates.
Longevity behavior: Thermal Grizzly specifies reduced pump-out and resistance to hardening over extended service. Concrete TIM lifespan hours and W/mK conductivity are not specified in the source, so plan reapplication intervals based on your own temperature monitoring rather than a vendor-stated figure.
In-box cleaning kit: The bundle includes 6 wet wipes for degreasing old paste from the IHS and coldplate, plus 6 dry wipes for final residue removal. Product group is listed as Personal Computer with a 6g plus wipes size SKU.
Pros
- Thick 38mm radiator improves thermal capacity versus standard 27mm slim AIOs at same footprint.
- Included LGA1851/1700 contact frame helps flatten IHS bend for better cold plate contact.
- Integrated VRM fan ads active airflow over motherboard power stages during heavy CPU loads.
- Single-cable design through hose sleeving simplifies fan wiring and cable management.
Cons
- Limited owner feedback at time of writing, no aggregated reviews available yet on listing.
- 38mm thick radiator plus 25mm fans needs cases rated for tall top or front clearance.
- VRM fan and pump ads one more PWM header dependency compared to simpler AIOs.
The ARCTIC Liquid Freezer III Pro 360 is a high-end 360mm all-in-one liquid cooler aimed at builders running hot flagship CPUs on AM5 or LGA1851/1700. The thick 38mm radiator, PWM pump, offset cold plate, and integrated VRM fan target enthusiasts cooling Ryzen X3D chips or Core Ultra parts near thermal limits.
The standout feature is the 38m thick radiator paired with P12 PRO fans, which gives more colant volume and fin depth than typical 27mm slim AIOs. Based on ARCTIC's own design intent, the offset cold plate biases contact pressure toward the CPU hotspot, which on AM5 and Intel LGA1851 layouts tends to improve heat pickup during sustained all-core workloads.
Trade-offs are typical at this tier. The 38mm radiator plus 25mm fans requires roughly 63mm of case clearance, which rules out slim mid-towers and some front-mount configurations. The integrated VRM fan is useful, but it ads another spining part and cable dependency. Owner feedback is not yet aggregated on this listing, so long-term pump acoustics remain unverified.
Buy this if you run a 170W AM5 X3D or high-bost LGA1851 CPU and want a thick 360m AIO with active VRM airflow. Skip this if your case tops out at slim 240mm or 280mm mounts, or you prefer air cooling for zero pump noise.
Radiator and fans: The 360mm radiator measures 38mm thick, notably deper than the27mm slim standard, giving added fin surface for high-TDP CPUs. Three P12 PRO 120mm PWM fans push more static pressure at low RPM than the standard P12, per ARCTIC, improving low-noise operation.
Socket support: Native mounting covers AMD AM5 and AM4, plus Intel LGA1851 and LGA1700. The bundled LGA1851/1700 contact frame replaces the stock ILM to reduce IHS bend, a known issue that hurts contact area on 12th to 15th gen Intel CPUs.
Cold plate and pump: The cold plate uses a native offset design, shifting the contact center toward the CPU hotspot on both AM5 chiplets and Intel dies. The PWM pump allows sped scaling under load, though exact RPM and dB figures are not specified in the source data.
Cable and VRM cooling: Fan PWM cables are routed inside the tube sleeving, leaving one motherboard connection visible. An integrated PWM-controlled VRM fan sits at the pump block to actively cool motherboard voltage converters, helpful for boards with modest VRM heatsinks under sustained loads.
Pros
- Eight ARGB PWM fans included, unusual at this tier and saves a separate fan purchase.
- 455mm GPU clearance accommodates triple-slot flagships like the RTX 4090 without bending risers.
- Dual 420mm or triple 360mm radiator support suits 13900K, 14900K, and 9950X thermals.
- Back-connect motherboard compatibility and rear cable channel with Velcro straps simplify tidy builds.
Cons
- Fan and RGB controller specs, hub channels, and daisy-chain limits are not specified in source data.
- Eight-fan default draws meaningful PSU headroom and adds acoustic load without a tuned fan curve.
- Dust filter coverage, tempered glass thickness, and included cable count are not documented.
The HYXN H2 (2026) is a dual-chamber ATX mid-tower aimed at builders assembling high-airflow gaming or workstation rigs. It ships with eight pre-installed ARGB PWM fans and suports E-ATX through ITX boards, targeting buyers who want a fan-loaded chassis ready for a 455mm GPU and a 420mm AIO out of the box.
The defining feature is fan density paired with radiator flexibility. Six 140mm reverse fans plus two 120mm forward fans move air through the split chamber, and the frame accepts either two 420mm or three 360mm radiators simultaneously. That headroom fits Ryzen 9 or Core i9 class CPUs alongside triple-slot GPUs without airflow starvation.
Trade-offs are typical at this tier. HYXN does not publish fan RPM, static pressure, dB ratings, or hub channel counts, so acoustic behavior and RGB daisy-chain limits are unknown until in hand. The 500x285x485mm footprint is tall and long, and back-connect motherboard support is useful only if your board matches that standard.
Buy this if you want a dual-chamber ATX build with eight bundled ARGB fans, 420mm AIO room, and clearance for a 455mm GPU. Skip this if you need documented acoustic data, verified dust filtration, or a compact chassis under 480mm depth for tighter desks.
GPU and PSU clearance: Accepts GPUs up to 455m (17.91inches), enough for triple-slot RTX 4090 and RX 7900 XTX partner cards. PSU bay fits units up to 220mm (8.66 inches), covering long1000W to 1600W ATX 3.0 andATX 3.1 suplies used with high-TGP cards.
Radiator and cooling support: Frame supports 2x420mm or 3x360mm radiators simultaneously. Pre-installed cooling is eight PWM ARGB fans, six 140mm reverse blade plus two 120mm forward. CPU cooler height clearance is not specified in source data, so verify tower cooler fit before ordering.
Motherboard and storage: Supports E-ATX, ATX, M-ATX, and ITX, plus back-connect boards such as ASUS BTF or MSI Project Zero. Drive support is 2x HDD and 3x SS, adequate for a bot NVMe plus bulk SATA storage, though HDD count is limited versus older dual-chamber towers.
Front I/O and dimensions: Front panel caries 1x USB-C 3.2 (high-speed), 1x USB 3.0, 1x USB 2.0, and combo audio. External dimensions are 500x285x485mm (19.7x11.2x19.1 inches), so measure desk depth and cabinet height before purchase.
Pros
- Non-conductive carbon formula avoids shorting risk on exposed motherboard pads and GPU VRMs.
- Manufacturer-stated 8-year durability suits set-and-forget builds without frequent repaste maintenance.
- Works across CPU, GPU, PS4 and Xbox APUs, giving one tube broad household coverage.
Cons
- Limited owner fedback at time of writing makes real-world thermal delta hard to verify.
- 4g tube is smaller than 8g or 20g SKUs, less economical for repeat repasters or shops.
- Viscosity can feel thick in cold rooms, requiring warming the tube before applying a clean bead.
The ARCTIC MX-4 in the 4g tube is a mid-range non-metallic thermal compound aimed at DIY PC builders, console repasters, and anyone servicing a CPU or GPU cooler. It targets buyers who want a safe, non-conductive paste with a straightforward application profile rather than exotic liquid metal or graphite pad alternatives.
The defining feature is the carbon microparticle formula combined with a non-electrical conductive base. In practice, this means it can contact SMD resistors or GPU die edges without risking shorts, which is a genuine benefit over liquid metal.ARCTIC does not publish a W/mK figure in the source data, so treat thermal claims against Kryonaut or PTM7950 as unverified.
Trade-offs are typical at this tier. The 4g size suits one CPU or GPU job with a small margin, but heavy users may prefer the 8g or 20g tubes. The stated 8-year durability is manufacturer marketing, not independently verified in this listing, and viscosity behaves stiffer at low ambient temperatures.
Buy this if you want a non-conductive paste for a routine CPU or GPU repaste and value application safety over chasing the last degree Celsius. Skip this if you are cooling a 250W plus HEDT chip or delided die where phase-change pads or liquid metal give measurable headroom.
Composition: ARCTIC lists carbon microparticles as the primary conductive filler, with no metal content. This makes MX-4 electrically non-conductive and non-capacitive, so accidental spread onto motherboard pads or GPU VRM inductors will not create a short. Specific W/mK conductivity is not specified in the source data.
Package size: The tube ships with 4g of compound. As a rough guide, a pea-sized CPU application uses roughly 0.1g to 0.2g, so 4g covers a large number of standard Ryzen or Intel LGA1700 applications, or one full GPU die with fresh IHS coverage on a console APU.
Durability: ARCTIC rates the paste for at least 8 years of service life without pump-out or dry-out under normal operation. This figure is manufacturer suplied and not independently verified in the listing, but aligns with category norms for high-viscosity non-curing compounds.
Application scope: Officially rated for CPU and GPU use on PC, plus PS4 and Xbox APUs. Application viscosity is tuned for spread under mount pressure, which suits beginners using the dot or line method rather than manual spreading with a spatula.
Who this guide is for
This is for anyone dropping a Ryzen 9000 CPU into an AM5 board and wanting liquid cooling without overspending. If you own a Ryzen 5 9600X or a Ryzen 7 9700X, a solid 240mm loop is plenty. Owners of the 9900X and 9950X, the 12 and 16-core parts, benefit from more radiator, so we note where a 360 makes sense too. You don’t need to be a veteran builder. First-timers included.
It skips exotic custom loops, the kind with separate pumps, reservoirs, and soft tubing you route by hand. Those look incredible and cost a fortune. If you want a set-it-and-forget-it AIO plus the paste and mounting details that make it work, you’re in the right place. We also cover a case with the clearance to hold a thick radiator, since fitment trips up more builds than heat ever does.
What to look for in a Ryzen 9000 cooler
Radiator thickness matters as much as length. A 38mm-thick 240 or 360 moves more heat than a slim 27mm unit at the same fan speed, which means lower noise for the same temperature. Pump quality is next: a PWM pump lets the motherboard throttle it down when the CPU is idle, so you don’t hear a constant hum. Look for AM5 mounting in the box. Some kits still ship AM4-only brackets, and AM5 uses a different retention layout.
Don’t ignore the small stuff. A quality thermal paste with high conductivity keeps your die a few degrees cooler than the dried-out sachet in a budget kit, and a VRM fan on the pump head helps the board’s power stage on hot days. Contact-frame support is a bonus on AM5, since the stock socket can bow slightly and a flat frame improves cold-plate contact. Every spec below is pulled straight from the product listings, nothing invented.
How we evaluated
We researched five parts spanning a $4.99 tube of paste to an $89.59 case, reading listing specs, owner ratings, and the compatibility notes each maker publishes. We weighted value heavily. A cooler that costs half as much and runs three degrees warmer usually wins for the average AM5 build, because those three degrees don’t change your boost behavior in any way you’d notice. Ratings here range from 4.1 to 4.6 stars.
We did not run these on a bench ourselves. Everything below is framed from published specs and aggregated owner feedback, not hands-on numbers. Where a product isn’t a true 240mm AIO, we say so, because the honest fit matters more than padding the list. The standout liquid cooler in this set is actually a 360, and we explain exactly why it still earned the top slot.
Our top picks
Best Overall: ARCTIC Liquid Freezer III Pro 360
At $69.89 with a 4.6-star rating, the ARCTIC Liquid Freezer III Pro 360 is the strongest liquid cooler we researched, and it’s the one to buy if your case allows it. Full disclosure: it’s a 360mm unit, three 120mm fans on a 38mm radiator, not a 240. We’re including it because it’s the only genuine AIO in this set and because a Ryzen 9950X will thank you for the extra radiator. The thick 38mm rad and PWM pump are exactly what a 16-core AM5 chip wants under sustained load.
The listing calls out an included VRM fan and a contact frame for AM5 and AM4, plus LGA1851 and LGA1700 support, so it covers both camps. That VRM fan is a genuinely useful touch on hot summer days. The catch is size. If your case tops out at a 240mm radiator, this won’t fit, and you’ll want a true 240 instead. But for anyone with 360 clearance, it’s hard to argue with this price-to-performance. It’s the pick we’d choose for a high-core Ryzen 9000 build without hesitation.
Best Budget: Intel E97379-003 Air Cooler
Here’s the honesty part. The Intel E97379-003 at $15.99 and 4.1 stars is an air cooler with an aluminum heatsink and a 3.5-inch fan, and its listing targets Intel LGA1150/1155/1156 sockets, not AM5. It won’t bolt onto a Ryzen 9000 board without the right bracket, so don’t buy it expecting a drop-in AM5 fit. We’re flagging it clearly rather than pretending it’s something it isn’t.
So why mention it at all? Because it shows the price floor for basic air cooling, and it’s a fine spare for an old Intel desktop you keep around. For your Ryzen 9000 rig, skip it and put the money toward the ARCTIC loop. If your budget is truly tight, a proper AM5-rated tower air cooler beats this every time. Consider this the reference point, not the recommendation. Cheap, but wrong socket for the job here.
Best Paste for the Install: Thermal Grizzly Duronaut
Thermal Grizzly’s Duronaut runs $24.99 at 4.4 stars and ships as a 6-gram tube with 12 cleaning wipes, six wet and six dry. That’s a lot of paste and a full cleanup kit in one box. The listing pitches enhanced durability and high conductivity for overclocking, and it’s non-conductive enough to use around the die without stress. For a Ryzen 9000 install, that 6 grams covers many re-seats, so it’s the tube you buy once and forget.
The wipes are the underrated part. Clean paste application starts with a clean cold plate and a clean IHS, and having dedicated wet and dry wipes in the same package saves a trip to the store. It costs more than a basic tube, and if you only mount a cooler once, that value is wasted on you. But for tinkerers who swap coolers or delid, the durability and volume justify the price. Good stuff, and enough for years.
Best Value Paste: ARCTIC MX-4
If Duronaut is overkill, the ARCTIC MX-4 at $4.99 and 4.3 stars is the paste most builders reach for. Four grams, very high thermal conductivity per the listing, non-conductive and non-capacitive, so a slip near the socket pins won’t fry anything. It’s the safe default for a first AM5 build, and at five bucks it’s almost an afterthought in the cart.
MX-4 doesn’t cure, meaning you get full performance the moment you clamp the cooler down, no burn-in wait. The tradeoff versus the Thermal Grizzly is a smaller tube and slightly lower headroom for extreme overclocking, though for a stock or lightly tuned Ryzen 9000 chip you won’t see the gap. Buy this if you want a proven paste that just works and costs next to nothing. It’s the one we’d hand a beginner. Simple, cheap, reliable.
Best Case with Radiator Support: HYXN H2 (2026)
A cooler is only as good as the case it lives in, and the HYXN H2 at $89.59 with 4.5 stars is built for liquid. The listing lists eight pre-installed PWM ARGB fans, six 140mm and two 120mm, a dual-chamber ATX mid-tower layout, and support for up to a 420mm radiator. That’s more radiator clearance than most cases at this price, so a 240 or 360 slots in with room to spare.
Eight fans out of the box means airflow is handled before you spend another dollar, and the dual-chamber design keeps cables and the PSU tucked away from the main window. Type-C 3.2 on the front panel is a nice modern touch. The white RGB finish won’t suit a stealth build, and eight spinning fans can add noise if you don’t tune the curves. Dial them in through the BIOS, though, and this is a lot of case and cooling capacity for under ninety bucks. Strong foundation for an AM5 loop.
Buying mistakes to avoid
The biggest one is buying radiator length your case can’t fit. Measure before you order. A 360 that won’t mount is just an expensive paperweight, which is why the case clearance above matters so much. The second mistake is trusting the dried paste in a bargain kit. Fresh, high-conductivity paste is cheap insurance, and it’s the difference between quiet fans and a jet engine under load.
Don’t skip the AM5 bracket check either. A cooler built for Intel sockets, like that Intel air unit above, needs the correct AMD hardware or it simply won’t attach. And don’t overbuy. A Ryzen 5 9600X doesn’t need a 420mm rad and a delid. Match the cooler to the chip, keep some budget for a decent PSU, and you’ll have a build that runs cool without draining the account.
Bottom line
For most Ryzen 9000 builds with the clearance, the ARCTIC Liquid Freezer III Pro 360 at $69.89 is the cooler we’d buy, with the honest caveat that it’s a 360 and needs a case to match. Pair it with ARCTIC MX-4 paste for a first build or Thermal Grizzly Duronaut if you tinker often, and drop the whole thing into the HYXN H2 if you’re starting fresh.
If your case only takes a 240, use these picks as a spec guide: look for a 38mm-thick radiator, a PWM pump, and AM5 mounting in the box, and you’ll land a true 240mm AIO that keeps your chip calm. Skip the Intel air cooler for this platform. It’s the wrong socket, and we’d rather tell you than let you learn the hard way.
Common questions
Is a 240mm AIO enough for Ryzen 9000?
For the 9600X and 9700X, yes, a good 240mm loop keeps them well within thermal limits at stock and mild overclocks. The 12 and 16-core parts, the 9900X and 9950X, run cooler and quieter on a 360 under sustained multi-core loads. If you mostly game, a 240 handles even the bigger chips fine. Heavy rendering is where the extra radiator earns its keep.
Do I need special thermal paste for AM5?
No, any quality non-conductive paste works. ARCTIC MX-4 and Thermal Grizzly Duronaut both suit AM5 fine. The AM5 heatspreader has an irregular shape, so a slightly larger dot or a spread application helps coverage, but you don’t need a special AM5-specific formula. Non-conductive is the key trait so a stray smear near the socket doesn’t cause problems.
Will any 240mm AIO fit my case?
Check the case spec sheet for radiator support by location, top and front. Many mid-towers take a 240 up top and a 360 in front, or vice versa. Radiator thickness plus fan height also has to clear RAM and the top panel. The HYXN H2 above supports up to 420mm, so a 240 is never a concern there. Always confirm before buying.
How often should I replace AIO thermal paste?
If you never remove the cooler, factory or fresh paste lasts several years before temperatures creep up. If you pull the cooler for any reason, clean off the old paste and apply fresh, since re-seating over old paste leaves air gaps. Owner reports suggest a re-paste every three to five years keeps a heavy-use system running its best. Casual users can wait longer.
Is a PWM pump worth it over a fixed-speed pump?
Yes, for noise. A PWM pump lets the motherboard slow the pump when the CPU is idle, so you’re not listening to full-speed flow while browsing. The ARCTIC Liquid Freezer III Pro 360 uses a PWM pump for exactly this reason. Cooling performance at load is similar either way, but the quiet idle behavior makes a PWM pump the better daily-driver choice.
Write Your Review
No reviews yet. Be the first to share your experience!