AMD’s FX chips run on Socket AM3+ and draw anywhere from 95W to 220W, which makes them some of the hottest consumer CPUs still in daily use. The best CPU coolers for AMD FX builds must list AM3+ and match that wide power range. These six picks on Amazon US cover everything from a 95W FX-6300 to a 220W FX-9370.
Quick verdict
For most FX owners, the Cooler Master MasterLiquid 360L Core ARGB is the right buy: Cooler Master lists AM3+ support, the 360mm radiator has the capacity for 125W and 220W FX chips, and it was about $88 in November 2026. On a 95W FX-6300 or FX-4300, the $37 Thermalright Frozen Notte 120 ARGB is enough.
| Cooler | Type | Radiator or height | AM3+ support source | Best FX match | Amazon US price, Nov 2026 |
|---|---|---|---|---|---|
| Cooler Master MasterLiquid 360L Core ARGB | 360mm AIO | 394 x 119.6 x 27.2mm | Maker page | FX-8320, FX-8370, FX-9370 | about $88 |
| Cooler Master MasterLiquid ML240L RGB V2 | 240mm AIO | 277 x 119.6 x 27.2mm | Amazon listing | 125W FX-8000 chips | about $90 |
| Thermaltake TH120 ARGB Sync V2 | 120mm AIO | 120mm radiator | Amazon listing | 95W to 125W FX in small cases | about $70 |
| Thermalright Frozen Notte 120 ARGB | 120mm AIO | 120mm radiator | Amazon listing | 95W FX-6300 and FX-4300 | about $37 |
| Wraith Prism-style replica (WSHAITE) | Top-down air | Not stated | Amazon listing (AM3) | Replacing a stock cooler on 95W chips | about $23 |
| SilverStone RL-KR01 | Low-profile air | 54mm (title) | Amazon title (AM3) | 95W FX in slim cases | about $27 |
How we selected these FX coolers
This is a research-based roundup, not a lab test. We searched the Amazon US data collected on November 11, 2026 for coolers whose title, bullets or maker page list AM3+ or AM3, kept those with meaningful review counts, and checked radiator sizes, fans and socket lists against maker pages where we could read them.
Very few current air towers still list AM3+. The best-selling Thermalright and ARCTIC towers list AM4 and AM5 only, and the current Cooler Master Hyper 212 Black drops AM3+ from its socket list. That leaves mostly AIO liquid coolers, which usually ship a universal AMD bracket, plus two low-height air options for 95W chips.
Wikipedia’s FX list puts the FX-4300, FX-6300 and FX-8370E at 95W, the FX-8320 and FX-8370 at 125W, and the FX-9370 at 220W, all on AM3+. We matched each pick to one of those tiers. Prices and ratings are a dated Amazon US snapshot, and ranking never follows commission.
How much cooling each FX tier needs
FX processors split cleanly into three power tiers. The 95W tier covers four- and six-core chips such as the FX-4300 and FX-6300, plus the efficiency-tuned FX-8370E. The 125W tier holds the eight-core FX-8320 and FX-8370. The 220W FX-9370 sits in a class of its own for desktop chips.
At 95W, a 120mm AIO or a well-built top-down air cooler is enough at stock. At 125W, especially with overclocking, a 240mm radiator keeps fan noise reasonable. At 220W, a 360mm radiator in a case with good airflow is the sensible minimum, and you should also watch the motherboard’s power delivery temperatures.
Top-down air coolers have one extra advantage on FX boards: they blow air across the VRM heatsinks around the socket, which many AM3+ boards rely on. AIO users can make up for that with a case fan aimed at the socket area or by keeping a front-to-back airflow path clear.
Best CPU coolers for AMD FX processors compared
The six picks below start with the cooler that covers every FX tier and work down to budget and slim options for 95W chips. Each section explains which FX chips it suits, the specs we could confirm, how it mounts on AM3+, and the trade-offs that should decide whether it belongs in your system.
Cooler Master MasterLiquid 360L Core ARGB
The 360L Core ARGB is our top FX pick because it is the only cooler here whose maker page we could read that confirms AM3+ alongside AM5 and LGA 1851. Its 360mm radiator has the capacity for 125W FX-8000 chips and the 220W FX-9370, and the same cooler can move to a modern build later.
Cooler Master 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, a three-year warranty, and AMD AM5, AM4, AM3+, AM3, AM2+, AM2, FM2+, FM2 and FM1 plus Intel LGA 1851 through 115x. The Amazon listing mentions a dual-chamber pump.
It was listed around $88 on Amazon US with 4.5 out of 5 from about 840 ratings as of November 2026. You need a case with a 360mm mount, which many older FX-era cases lack, so check before ordering.
- Pros: maker-confirmed AM3+; 360mm radiator for 220W chips; carries over to AM5 and LGA 1851
- Cons: needs a 360mm radiator mount; does not blow air over the VRM like a top-down cooler
Buy it if you run an FX-8000 or FX-9000 chip and your case takes a 360mm radiator. Skip it if your case only fits 240mm or smaller.
Cooler Master MasterLiquid ML240L RGB V2
The ML240L RGB V2 is the pick for 125W FX-8320 and FX-8370 owners whose cases fit a 240mm radiator but not a 360mm one. It is also the most reviewed AM3+-compatible cooler in the Amazon data, which gives some reassurance about long-term reliability for a cooler you may run for years.
The Amazon listing for part MLW-D24M-A18PC-R2 gives a 277 x 119.6 x 27.2mm radiator, two SickleFlow 120mm RGB fans, a dual-chamber pump, AMD AM4, AM3+, AM3, AM2+, AM2, FM2+, FM2 and FM1 with AM5 in the title, and Intel sockets through LGA 1700, which needs a separate kit.
It was listed around $90 on Amazon US with 4.6 out of 5 from about 9,600 ratings as of November 2026.
- Pros: AM3+ listed; huge review base; 240mm radiator fits more older cases
- Cons: costs about the same as the larger 360L Core; specs from listing rather than a maker page
Buy it if your case only takes a 240mm radiator. Skip it if a 360mm fits, since the 360L Core costs about the same.
Thermaltake TH120 ARGB Sync V2
The TH120 ARGB Sync V2 is a compact liquid option for FX systems in smaller cases that have only a rear 120mm fan mount. It suits 95W chips comfortably and 125W chips at stock settings, and it can sync its lighting with motherboard RGB software from ASUS, Gigabyte, MSI and ASRock.
The Amazon listing gives a 120mm radiator with one fan at 500 to 2,000 RPM, a copper base plate, a rotating mirror-finish pump cap, a two-year warranty, and support for Intel LGA 1851 through 115x and AMD AM5, AM4, AM3+, AM3, AM2+ and AM2.
It was listed around $70 on Amazon US with 4.5 out of 5 from about 340 ratings as of November 2026. That is roughly double the price of the Frozen Notte 120, so buy it mainly for its RGB sync and brand support.
- Pros: AM3+ listed; fits a single 120mm mount; motherboard RGB sync
- Cons: expensive for a 120mm AIO; limited headroom for 220W chips
Buy it if you need a 120mm AIO with mainstream RGB sync. Skip it if price matters, where the Frozen Notte 120 is cheaper.
Thermalright Frozen Notte 120 ARGB
The Frozen Notte 120 is the value pick for 95W FX chips such as the FX-6300 and FX-4300. It brings liquid cooling at a price close to a basic air cooler, and its listing names AM3+, FM2+ and AM4 among the supported sockets, which helps if the system later moves to a Ryzen board.
The Amazon listing describes a 120mm radiator, a pump up to 2,800 RPM, one 120mm PWM fan up to 2,000 RPM at 72.37 CFM, ARGB synced through a 5V 3-pin header, and support for Intel LGA 115x through 1700 and AMD AM2 through AM5 including AM3+. AMD installs reuse the board’s original backplate.
It was listed around $37 on Amazon US with 4.4 out of 5 from about 980 ratings as of November 2026.
- Pros: low price; AM3+ and AM4 listed; ARGB
- Cons: one 120mm radiator is light for overclocked 125W chips; listing-only specs
Buy it if you run a 95W FX at stock. Skip it if you have an FX-9370 or plan heavy overclocking.
Wraith Prism-style replica (WSHAITE)
This third-party replica of AMD’s Wraith Prism is the cheapest way to replace a worn-out box cooler on a 95W FX chip. It is a top-down design, so it pushes air over the VRM area around the socket, which suits AM3+ boards that depend on that airflow for their power delivery.
The listing describes four 6mm copper heat pipes, a copper base, a 95mm RGB fan with a low and high switch up to 2,800 RPM, pre-applied paste, and compatibility with AM4, AM5, AM2, AM3, FM2 and FM1 using the stock bracket. AM3+ is not named, but AM3+ boards use the same mounting as AM3.
It was listed around $23 on Amazon US with 4.7 out of 5 from about 130 ratings as of November 2026, with a three-month warranty from the seller.
- Pros: cheap; top-down airflow over the VRM; clip-on install
- Cons: not AMD-branded; three-month warranty; not enough for 125W or 220W chips
Buy it if you need a quick, cheap swap on a 95W chip. Skip it if you run an eight-core FX.
SilverStone RL-KR01
The RL-KR01 is the slim choice for 95W FX chips in compact or home-theater cases. Its Amazon title describes a 54mm-tall low-profile cooler for AMD AM2, AM3, AM4, FM1 and FM2, rated for 95W or more, which matches the 95W FX-6300, FX-4300 and FX-8370E.
The data set contains only the product title for this listing, so height, sockets and power rating come from that title alone. AM3+ is not named, but AM3+ shares the AM3 mounting pattern that Wikipedia describes as common to AM2 through FM2. Check SilverStone’s manual before ordering.
It was listed around $27 on Amazon US with 4.6 out of 5 from about 200 ratings as of November 2026.
- Pros: 54mm height; also lists AM4
- Cons: listing detail is thin; no headroom for 125W chips
Buy it if your case is too slim for anything else. Skip it if you run an FX-8320 or faster.
FX cooler buying guide
FX systems are old enough that compatibility and case size often limit your choice more than budget. The checks below cover AM3+ mounting, power tiers and VRM airflow, older case layouts, and whether to spend money on a platform that is now more than a decade old.
Confirm AM3+ or AM3 in the socket list
Look for AM3+ in the maker’s socket list. AM3 listings normally fit AM3+ boards, because Wikipedia’s FM2+ page describes AM2, AM2+, AM3, AM3+ and FM2 as sharing a 48 x 96mm heatsink hole pattern. Coolers that list only AM4 and AM5 use a 54 x 90mm layout and will not line up.
Check whether the cooler clips onto the plastic retention frame or uses the backplate. Many AM3+ boards have a frame with lugs on both sides, and AIO AMD brackets often hook onto it. If the frame has cracked with age, replace it or choose a cooler with its own backplate.
Match radiator size to FX power
Use the FX power tier to size the cooler first. For 95W chips, a 120mm AIO or a decent top-down air cooler is enough. For 125W FX-8000 chips, aim for a 240mm radiator or larger. For the 220W FX-9370, a 360mm radiator and strong case airflow are the safe choice.
If you overclock, step up one size. FX chips can draw far more than their rated TDP at high voltages, and the motherboard’s VRM can become the limiting factor before the CPU does.
Older cases and radiator mounts
Many FX-era cases have fewer radiator mounts than modern ones. Before buying an AIO, confirm the radiator size your case supports at the front or top, and check that the tubes can reach the socket. A rear 120mm mount is the most common option in older cases.
If your case has no radiator support, a top-down air cooler is the fallback. That limits you to 95W chips, because none of the current top-down options we found have the capacity for an FX-8000 or FX-9000 processor.
FAQ
These answers cover what FX owners ask most often when replacing a cooler. They rely on Wikipedia’s FX and socket pages and on the Amazon and maker listings behind each pick, and they point back to the relevant section above when a fuller explanation already exists.
Do the best CPU coolers for AMD FX chips also fit Ryzen?
Most of the picks in this guide do. The 360L Core ARGB and ML240L RGB V2 list AM4 and AM5, and the Frozen Notte 120, TH120 V2 and Wraith Prism-style replica list AM4 too. That means your cooler can move to a Ryzen build if you replace the aging FX system later on.
Can I use a Noctua or Thermalright tower on AM3+?
The current Thermalright towers we checked list AM4 and AM5 only, not AM3+. Noctua’s AM3 support could not be verified because its site blocked our requests, so confirm with Noctua before buying. That is why this list leans on AIOs with universal AMD brackets.
Is an FX-9370 safe on a 240mm AIO?
At 220W, it is a heavy load for a 240mm radiator, and fans will run fast. A 360mm radiator such as the 360L Core ARGB is the safer choice. Also make sure your motherboard is rated for 220W chips, because the VRM can overheat before the cooler reaches its limit.
Conclusion
Get the Cooler Master MasterLiquid 360L Core ARGB for an FX system. Cooler Master confirms AM3+ support, the 360mm radiator handles 125W FX-8000 chips and the 220W FX-9370, it also fits AM5 later, and it was about $88 in November 2026. Choose the $37 Frozen Notte 120 only if you run a 95W FX at stock.
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