AMD’s FX processors still run plenty of home servers and budget gaming PCs, but most new coolers no longer ship AM3+ hardware. This guide to the best CPU coolers AM3+ owners can still buy lists seven models whose manufacturer page or listing names the socket, matched to 95W to 220W FX chips, with Amazon US data from November 2026.
Quick verdict
For most FX systems, buy the Cooler Master MasterLiquid ML240L RGB V2: its Amazon listing names AM3+ mounting, it has a 240mm radiator and about 9,600 ratings as of November 2026. Choose the MasterLiquid 360L Core ARGB for an FX-9370 or heavy overclock, and the SilverStone RL-KR01 for slim cases.
| Cooler | Type | Size | AM3+ support source | Best FX match | Amazon US, Nov 2026 |
|---|---|---|---|---|---|
| Cooler Master MasterLiquid ML240L RGB V2 | 240mm AIO | 277 x 119.6 x 27.2mm radiator | Amazon listing | FX-8320 to FX-8370, 125W | about $90, 4.6 stars, 9,608 ratings |
| Cooler Master MasterLiquid 360L Core ARGB | 360mm AIO | 394 x 119.6 x 27.2mm radiator | Manufacturer and Amazon | FX-9370, 220W, or overclocks | about $88, 4.5 stars, 839 ratings |
| Thermalright Frozen Notte 120 ARGB Black | 120mm AIO | 120mm radiator | Amazon listing | FX-4300 or FX-6300, 95W | about $37, 4.4 stars, 977 ratings |
| Thermaltake TH120 ARGB Sync V2 | 120mm AIO | 120mm radiator | Amazon listing | 95W chips with board RGB sync | about $70, 4.5 stars, 340 ratings |
| SilverStone RL-KR01 | Low profile | 54mm | Amazon title (AM3) | 95W chips in slim cases | about $27, 4.6 stars, 199 ratings |
| ARCTIC Freezer 7 X | Compact tower | 100mm fan | Manufacturer manual | 95W chips on a budget | Not in our Amazon data |
| Cooler Master Hyper 212 Black Edition | Single tower | 158.8mm | Manufacturer page | 95W to 125W chips | Not in our Amazon data |
Prices and ratings are Amazon US snapshots as of November 2026 and will change. Two coolers were not identified in our Amazon data, so check current retail listings before planning around them.
How we selected these AM3+ coolers
The key filter was simple: a manufacturer page, manual or Amazon listing had to name AM3+ or AM3 support. That removed most of today’s best-selling coolers, which list only AM5, AM4 and current Intel sockets. AM3+ hardware is now a niche, so the field is small.
Next, we matched each cooler to FX power levels. Wikipedia’s list of AMD FX processors gives 95W for the FX-4300, FX-6300 and FX-8370E, 125W for the FX-8320 and FX-8370, and 220W for the FX-9370, all on AM3+. That spread decides whether a 120mm cooler is enough or a 360mm radiator is wiser.
We kept Amazon-listed models with meaningful rating counts, and added two well-documented coolers whose manufacturer pages list AM3+ even though we could not find them in our Amazon data. We did not test these coolers ourselves, so the guidance rests on published specs.
Best CPU coolers AM3+ boards can still take
The seven picks below run from large AIOs for hot FX-8000 and FX-9000 chips to compact air coolers for 95W parts. Each one explains where the AM3+ support claim comes from, which FX chips it suits and what to check on your board and case before buying.
Cooler Master MasterLiquid ML240L RGB V2
The ML240L RGB V2 is our top AM3+ pick because AM3+ support is printed in its Amazon listing and it has the largest owner base here. The listing names AMD AM4, AM3+, AM3, AM2+, AM2, FM2+, FM2 and FM1, plus Intel LGA 1200, 115x, 2066 and 2011, and LGA 1700 with a separate kit.
It has a 277 x 119.6 x 27.2mm radiator, a third-generation dual-chamber pump and two SickleFlow 120mm RGB PWM fans. It was listed around $90 on Amazon US as of November 2026 with 4.6 stars from about 9,600 ratings, which means plenty of owner install guides for older AMD boards.
A 240mm radiator comfortably suits the 125W FX-8320 and FX-8370. For the 220W FX-9370, the 360L Core below gives more margin. Check that your case has a 240mm mount, because older cases do not always include one.
- Pro: AM3+ named in the listing
- Pro: very large owner base
- Con: needs a 240mm mount
- Con: priced near the larger 360L Core
Buy it if you run a 125W FX-8000 chip and your case takes a 240mm radiator. Skip it if your case only has 120mm mounts.
Cooler Master MasterLiquid 360L Core ARGB
The 360L Core ARGB is the strongest AM3+ option here. Cooler Master’s page lists a 394 x 119.6 x 27.2mm aluminum radiator, three 120mm ARGB fans at 650 to 1,750 rpm rated at 71.93 CFM and 27.2 dBA, AMD AM5, AM4, AM3+, AM3, AM2+, AM2, FM2+, FM2 and FM1 support, and a three-year warranty.
The Amazon listing repeats AM3 and AM3+ compatibility, and it was priced around $88 as of November 2026 with 4.5 stars from about 840 ratings. That puts a 360mm radiator at roughly the same price as the ML240L RGB V2 in that snapshot.
It is the natural match for the 220W FX-9370 or a heavily overclocked FX-8000 chip. The catch is the case: many older mid-towers lack a 360mm mount. Measure the front or top before buying, and allow for a 27mm radiator plus 25mm fans.
- Pro: AM3+ listed by the manufacturer
- Pro: 360mm radiator for hot FX chips
- Con: needs a 360mm mount older cases often lack
- Con: three fans and a pump add wiring
Buy it if you run an FX-9370 or overclock and your case fits 360mm. Skip it if your case cannot take a large radiator.
Thermalright Frozen Notte 120 ARGB Black
The Frozen Notte 120 is the budget way to get liquid cooling on AM3+. Its Amazon listing names AMD AM4, AM5, AM2, AM2+, AM3, AM3+, FM1, FM2 and FM2+, plus Intel LGA 1150 to 1700, with a pump up to 2,800 rpm and a 120mm PWM fan up to 2,000 rpm with 5V ARGB lighting.
It was listed around $37 on Amazon US as of November 2026 with 4.4 stars from about 980 ratings. The listing notes that AMD installs use the motherboard’s original backplate, which is convenient on older boards where the stock retention hardware is still in place.
A 120mm radiator has limited capacity, so this suits 95W FX-4300 and FX-6300 chips best. It mounts in the rear 120mm fan position that most AM3+-era cases have. For a 125W FX-8000 chip, a 240mm AIO or a larger tower gives more headroom.
- Pro: AM3+ named and low price
- Pro: fits a rear 120mm fan mount
- Con: small radiator
- Con: warranty not stated in the listing
Buy it if you have a 95W FX chip and a case with only a rear 120mm mount. Skip it if you run a 125W or 220W chip.
Thermaltake TH120 ARGB Sync V2
The TH120 ARGB Sync V2 is another 120mm AIO with AM3+ in its listing, adding broad motherboard lighting sync. Amazon names AMD AM5, AM4, AM3+, AM3, AM2+ and AM2, plus Intel LGA 1851 to 115x, with one 120mm PWM fan at 500 to 2,000 rpm, a copper base and a two-year warranty.
The listing says its lighting syncs with ASUS Aura Sync, GIGABYTE RGB Fusion, MSI Mystic Light Sync and ASRock Polychrome. It was listed around $70 on Amazon US as of November 2026 with 4.5 stars from about 340 ratings, about twice the Frozen Notte 120’s price.
Capacity is similar to the Frozen Notte 120 on paper, so the extra money buys the brand, the stated two-year warranty and the lighting features. Note that many AM3+ boards predate addressable RGB headers, so confirm your board has the right header before relying on sync.
- Pro: AM3+ named, two-year warranty
- Pro: broad lighting sync support
- Con: costs about twice the Frozen Notte 120
- Con: small radiator for 125W chips
Buy it if you want an AIO with lighting sync and a stated warranty. Skip it if your old board lacks an addressable RGB header.
SilverStone RL-KR01
The RL-KR01 is the slim-case pick. Its Amazon title describes a 54mm-tall low-profile cooler for AMD AM2, AM3, AM4, FM1 and FM2 sockets, rated by SilverStone for 95W or more. We found no detailed bullets in our data, so those title specs are what we can confirm.
It was listed around $27 on Amazon US as of November 2026 with 4.6 stars from about 200 ratings. AM3+ boards use the same cooler mounting as AM3, as far as we could find, but the title does not name AM3+ directly, so confirm with the seller before you order.
At 54mm it fits small desktops and HTPC cases where towers cannot go, and a down-facing fan also moves air over the board around the socket. With a 95W-class rating, it suits FX-4300 and FX-6300 chips, not the 125W or 220W models.
- Pro: 54mm height for slim cases
- Pro: low price
- Con: AM3+ not named in the title
- Con: limited to about 95W chips
Buy it if you have a slim case and a 95W FX chip. Skip it if you run an FX-8000 or FX-9000 chip.
ARCTIC Freezer 7 X
The Freezer 7 X is ARCTIC’s compact tower with one 100mm PWM fan, direct-touch heat pipes and a six-year warranty. ARCTIC’s current installation manual covers AMD AM4 and AM3(+) as well as Intel LGA 1851, 1700, 1200 and 115x, which makes it one of the few current coolers with documented AM3+ mounting.
The same manual notes that on AMD the fan will not be controllable by PWM, and that some mechanical interference with surrounding components may appear. That means the fan runs at a fixed speed curve on AM3+, so it may be noisier than you expect on an older board.
We could not identify it by name in our Amazon data, so we give no price or rating. It suits 95W FX chips in compact cases. For 125W chips, a tower with a 120mm fan or a 240mm AIO is the better match.
- Pro: AM3(+) documented in ARCTIC’s manual
- Pro: six-year warranty
- Con: no PWM fan control on AMD
- Con: small 100mm fan
Buy it if you want a small, cheap air cooler for a 95W FX chip. Skip it if quiet operation under load is a priority.
Cooler Master Hyper 212 Black Edition
The Hyper 212 Black Edition is the classic tower that many FX builders used. Cooler Master’s page for the RR-212S-20PK-R1 lists a 123 x 77 x 158.8mm size, four heat pipes, a 120mm fan at 800 to 2,000 rpm, AMD AM4, AM3+, AM3, AM2+, AM2, FM2+, FM2 and FM1 support, and a two-year warranty.
The later R2 version adds LGA 1700 support and keeps AM3+, according to its own Cooler Master page, which also notes AM5 hardware in later production. We could not identify either version in our Amazon data, so check retail listings for the exact SKU.
A single 120mm tower suits 95W chips easily and 125W FX-8000 chips at stock. Its 158.8mm height needs a case with at least about 160mm of clearance. For an FX-9370, choose the 360L Core instead.
- Pro: AM3+ listed by the manufacturer
- Pro: tower cooling with a 120mm fan
- Con: not found in our Amazon data
- Con: 158.8mm height
Buy it if you find the exact SKU in stock and your case fits 160mm. Skip it if you need a known price today.
AM3+ cooler buying guide
Cooling an FX system has a few quirks: the right mounting hardware is rare, older cases may limit radiator sizes and the power gap between FX models is large. The points below explain how to pick a cooler that mounts, fits and handles your chip’s rated power.
Confirm AM3+ in writing
Do not assume that an AM4 cooler fits AM3+. The coolers here list AM3+ or AM3 on a manufacturer page, manual or listing, and that is the standard to hold any other cooler to. If a listing names only AM4 and AM5, ask the seller before buying, and keep the order page as proof.
Keep your board’s original retention bracket and backplate. Several coolers, such as the Frozen Notte 120, use the original AMD backplate, so losing it can stall an install.
Match the cooler to FX power
FX chips span a wide range. The FX-4300, FX-6300 and FX-8370E are rated at 95W, the FX-8320 and FX-8370 at 125W, and the FX-9370 at 220W. Low-profile and 120mm coolers suit the 95W chips, while 125W chips need at least a 120mm tower or a 240mm AIO for comfortable headroom.
The FX-9370 is a special case. At 220W it needs the 360L Core or similar, and your motherboard must also be rated for that power, so check its CPU support list before installing a 220W chip.
Case clearance and radiator mounts
AM3+-era cases often have limited radiator support. Check your manual for 240mm or 360mm mounts and for maximum cooler height, and measure if you can. A Noctua study reported by The FPS Review in August 2026 found that 56 of more than 100 measured cases differed significantly from their listed clearance.
If your case only has a rear 120mm mount, a 120mm AIO or a compact tower is the realistic choice. If it fits about 160mm, the Hyper 212 Black Edition is an option, and if it fits a large radiator, the ML240L or 360L Core gives the most headroom.
FAQ
These answers cover common questions from AMD FX owners shopping for a cooler. They rely on Wikipedia’s FX processor list and the manufacturer and Amazon US data collected for this guide in November 2026, and they do not quote temperatures we could not confirm for these coolers.
Which of the best CPU coolers AM3+ users can buy suits a 125W FX-8000 chip?
A 240mm AIO like the Cooler Master MasterLiquid ML240L RGB V2 is our pick for 125W FX-8000 chips such as the FX-8320 and FX-8370 listed on Wikipedia. Its Amazon listing names AM3+, and the 240mm radiator gives comfortable headroom. A 120mm tower is the budget alternative.
Do AM4 coolers fit AM3+?
Not automatically. Only buy coolers that list AM3+ or AM3 on the manufacturer page, manual or listing. All seven coolers here meet that standard, while many current coolers list only AM4 and AM5. If in doubt, contact the seller before ordering, and ask specifically whether the box includes AM3+ brackets or clips.
Is an AIO worth it on an old FX system?
It can be, especially for 125W and 220W chips. An AIO like the ML240L or 360L Core moves heat to a radiator, which helps in cramped cases. For 95W chips, a compact air cooler or 120mm AIO is cheaper and simpler. Either way, check your case mounts first, because radiator support decides what fits in older chassis.
Can I reuse my AM3+ cooler on a new AM5 build?
Some of these coolers list AM5 too. The 360L Core ARGB, Frozen Notte 120 and Thermaltake TH120 V2 all name AM5 in their listings, so they can move to a new platform. The ML240L RGB V2 lists AM5 in its title, and the RL-KR01 lists AM4, so only some picks can follow you to AM5.
Conclusion
Buy the Cooler Master MasterLiquid ML240L RGB V2 for most FX systems: its listing names AM3+, its 240mm radiator handles 125W chips comfortably, and thousands of owners have documented installs. Choose the MasterLiquid 360L Core ARGB instead for an FX-9370 or heavy overclock, if your case takes 360mm.
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