Top 240Mm Cpu Coolers Picks for 2026
Here are our current top 240mm cpu coolers picks, compared on real Amazon owner reviews, price, and features. Live prices update below.
A 240mm CPU cooler usually means one specific thing: an all-in-one (AIO) liquid cooler with a 240mm radiator, sized to take two 120mm fans and mount in the most common dual-fan radiator slot in modern cases. That radiator size is the sweet spot for many gaming builds — enough cooling capacity for hot, high-core-count CPUs without the bulk of a 360mm unit. This guide rounds up the best 240mm AIO liquid coolers in 2026, and because two strong air coolers commonly appear alongside them in shopping lists, we have included them too and flagged them clearly so you know they are not 240mm AIOs.
Our picks were chosen on what matters for a 240mm-class cooling solution: cooling capacity, pump and fan quality, RGB and aesthetics, ease of installation, and value, with the radiator size or air-cooler type stated honestly for each. We have included a deliberate price spread — from around $26 up to around $123 — so you can match cooling to your CPU and budget. The genuine 240mm AIOs lead the list; the two high-performance air coolers are presented for what they really are. Below you will find an at-a-glance comparison, then a closer look at each cooler and a buyer’s guide covering radiator size, fitment, and choosing between liquid and air.
Best 240mm CPU Coolers at a Glance
| CPU Cooler | Best For | Standout Spec | Approx Price |
|---|---|---|---|
| CoolerMaster MasterLiquid ML240L RGB V2 | Best-value 240mm AIO | 240mm radiator, RGB, Gen3 pump | around $90 |
| Cooler Master Hyper 212 Black (air) | Budget air alternative | 120mm air tower, 4 heat pipes | around $26 |
| ID-COOLING FROSTFLOW X 240 | Cheapest 240mm AIO | 240mm radiator, white design | around $52 |
| Thermalright Peerless Assassin 120 SE (air) | High-end air alternative | Dual-tower air, 6 heat pipes | around $35 |
| Cooler Master MasterLiquid LC240E RGB | Balanced 240mm RGB AIO | 240mm radiator, RGB | around $70 |
| MSI MAG CoreLiquid E240 | Premium 240mm AIO | 240mm, ARGB, rotating cap | around $123 |
1. CoolerMaster MasterLiquid ML240L RGB V2, Close-Loop AIO CPU Liquid Cooler, Gen3
CoolerMaster MasterLiquid ML240L RGB V2, Close-Loop AIO CPU Liquid Cooler, Gen3 Dual Chamber Pump, 240mm Radiator, SickleFlow 120 PWM ARGB, AMD Ryzen AM5/AM4, Intel LGA1700/1200 (MLW-D24M-A18PC-R2)
As an Amazon Associate we earn from qualifying purchases. Product prices and availability are accurate as of the date/time indicated.
The CoolerMaster MasterLiquid ML240L RGB V2 is our top 240mm pick and the best-value true AIO on this list. It is a genuine 240mm closed-loop liquid cooler with a dual-chamber Gen3 pump for efficient circulation, two 120mm RGB fans, and an RGB pump cap, all designed to mount in the standard 240mm radiator slot. At around $90 it delivers proper liquid cooling and a vivid look at a sensible price.
This is the cooler to choose for a mainstream-to-high-end gaming build that wants the cooling capacity and clean aesthetic of a 240mm AIO. The 240mm radiator handles hot, high-core-count CPUs comfortably, the Gen3 pump improves reliability and flow, and the RGB fans and cap tie into popular motherboard lighting software. As a confirmed 240mm liquid cooler with strong performance, good looks and fair value, the ML240L RGB V2 is the obvious starting point and our top recommendation.
Pros: Genuine 240mm AIO, efficient Gen3 pump, RGB fans and cap, strong value cooling.
Cons: Liquid coolers carry a small pump-failure risk over many years; RGB needs a header.
2. Cooler Master Hyper 212 Black CPU Air Cooler – 120mm High Performance PWM Fan, 4 Heat Pipes
Prime Cooler Master Hyper 212 Black CPU Air Cooler – 120mm High Performance PWM Fan, 4 Copper Heat Pipes, Aluminum Top Cover, Low Noise & Easy Installation, AMD AM5/AM4 & Intel LGA 1851/1700/1200, Black
As an Amazon Associate we earn from qualifying purchases. Product prices and availability are accurate as of the date/time indicated.
A clear, honest flag first: the Cooler Master Hyper 212 Black is NOT a 240mm AIO — it is a 120mm air-cooler tower. We have included it in second place because it appears constantly alongside 240mm coolers in shopping lists, and it is genuinely excellent value, but it is an air cooler with a single 120mm PWM fan and four direct-contact heat pipes, not a liquid cooler. At around $26 it is the cheapest option here by far.
This is the cooler to consider if you are open to air cooling instead of a 240mm AIO, perhaps to save money or avoid any pump entirely. The legendary Hyper 212 line offers strong cooling for mainstream CPUs, the single-tower design fits most cases, and with no pump or liquid there is nothing to leak or wear out. Just go in knowing it is an air cooler: if you specifically need a 240mm radiator AIO, this is not it, but as a reliable, budget air alternative it is a deservedly classic pick.
Pros: Excellent value air cooling, four heat pipes, no pump to fail, fits most cases.
Cons: NOT a 240mm AIO — it is a 120mm air tower; less headroom than liquid for the hottest chips.
3. ID-COOLING FROSTFLOW X 240 CPU Water Cooler AIO Cooler 240mm CPU Liquid Cooler
ID-COOLING FROSTFLOW X 240 CPU Water Cooler AIO Cooler 240mm CPU Liquid Cooler White LED 2x120mm PWM Fans, Intel 1700/1200/115X, AMD AM5/AM4
As an Amazon Associate we earn from qualifying purchases. Product prices and availability are accurate as of the date/time indicated.
The ID-COOLING FROSTFLOW X 240 is the cheapest genuine 240mm AIO here, and a strong value at around $52. It is a true 240mm closed-loop liquid cooler with a 240mm radiator, two 120mm fans and a clean white design that suits lighter-themed builds. For builders who want real liquid cooling on a budget, it is a compelling, affordable entry point.
This is the cooler for the value-focused builder who specifically wants a 240mm AIO without paying flagship money. The 240mm radiator provides solid cooling headroom for mid-to-high-end CPUs, the white aesthetic stands out in a market full of black coolers, and the closed-loop design arrives pre-filled and ready to mount. As an inexpensive, confirmed 240mm liquid cooler that covers the essentials and looks smart doing it, the FROSTFLOW X 240 is a sensible, budget-friendly choice.
Pros: True 240mm AIO at a low price, clean white design, solid cooling for the money.
Cons: Fewer premium extras and less RGB than pricier AIOs; pump-failure risk over time.
4. Thermalright Peerless Assassin 120 SE CPU Cooler, 6 Heat Pipes AGHP Technology
Thermalright Peerless Assassin 120 SE CPU Cooler, 6 Heat Pipes AGHP Technology, Dual 120mm PWM Fans, 1550RPM Speed, for AMD:AM4 AM5/Intel LGA 1700/1150/1151/1200/1851,PC Cooler
As an Amazon Associate we earn from qualifying purchases. Product prices and availability are accurate as of the date/time indicated.
Another honest flag: the Thermalright Peerless Assassin 120 SE is NOT a 240mm AIO either — it is a high-end dual-tower 120mm air cooler. We include it because it is frequently cross-shopped against 240mm liquid coolers and is one of the best-value air coolers available, but it cools with two fin stacks, twin fans and six AGHP heat pipes, not a radiator and pump. At around $35 it punches remarkably above its price.
This is the cooler for the builder weighing a 240mm AIO against top-tier air cooling. The dual-tower Peerless Assassin rivals many entry AIOs in raw cooling for hot CPUs, runs with no pump and nothing to leak, and is famous for its performance-per-dollar. The trade-off is size and the obvious one: it is air, not a 240mm liquid cooler. If a 240mm radiator AIO is a hard requirement this is not it, but as a high-performance air alternative it is an outstanding, highly recommended option.
Pros: Outstanding dual-tower air cooling, six heat pipes, no pump, superb value.
Cons: NOT a 240mm AIO — it is a large air cooler; bulky and may conflict with tall RAM.
5. Cooler Master MasterLiquid LC240E RGB Close-Loop AIO CPU Liquid Cooler, 240mm Radiator
Cooler Master MasterLiquid ML240L V2 RGB CPU Liquid Cooler - Brighter Lighting Effects, 3rd Gen. Pump, Superior Radiator and Dual Advanced 120 mm SickleFlow Fans, Black
As an Amazon Associate we earn from qualifying purchases. Product prices and availability are accurate as of the date/time indicated.
The Cooler Master MasterLiquid LC240E RGB is the balanced 240mm RGB pick. It is a genuine 240mm closed-loop liquid cooler pairing a 240mm radiator with two 120mm RGB fans and an illuminated pump, hitting a comfortable middle ground between the budget FROSTFLOW and the premium MSI unit. At around $70 it offers real liquid cooling and full RGB at a very reasonable price.
This is the cooler for the builder who wants confirmed 240mm AIO performance with vivid lighting but does not want to stretch to a flagship. The 240mm radiator keeps high-performance CPUs cool under gaming and multitasking loads, the RGB fans and pump create a coordinated glow through your motherboard software, and Cooler Master’s pedigree adds confidence. For a well-rounded, genuine 240mm liquid cooler that balances cooling, looks and price, the LC240E RGB is a smart, dependable choice.
Pros: Confirmed 240mm AIO, RGB fans and pump, balanced performance and price, trusted brand.
Cons: RGB requires a motherboard header; standard liquid-cooler pump-life consideration.
6. MSI MAG CoreLiquid E240 Black – AIO ARGB CPU Liquid Cooler – Rotating Cap Design
MSI MAG Coreliquid A13 360 - AIO ARGB CPU Liquid Cooler - 360mm Radiator - LGA 1700/1851 / AM5/AM4 Compatible - Triple 120mm ARGB PWM Fans, Black
As an Amazon Associate we earn from qualifying purchases. Product prices and availability are accurate as of the date/time indicated.
The MSI MAG CoreLiquid E240 is the premium 240mm AIO on this list. It is a genuine 240mm closed-loop liquid cooler with a 240mm radiator, ARGB fans, and a distinctive rotating pump cap that lets you align the MSI logo perfectly whatever the mounting orientation. At around $123 it is the most expensive cooler here, and the polish and features explain the premium.
This is the cooler for the enthusiast who wants a confirmed 240mm AIO with top-tier aesthetics and refinement. The 240mm radiator delivers strong cooling for hot, high-core-count gaming CPUs, the ARGB lighting is vivid and fully controllable, and the rotating cap solves the common annoyance of a sideways logo for a clean, finished look. For a premium, genuine 240mm liquid cooler that combines serious cooling with standout presentation, the MSI MAG CoreLiquid E240 is the showpiece pick.
Pros: Genuine 240mm AIO, vivid ARGB, rotating cap for perfect logo alignment, premium build.
Cons: Highest price here; the rotating-cap polish is aesthetic rather than thermal.
How to Choose a 240mm CPU Cooler
Start by being clear on what a 240mm cooler actually is: an AIO liquid cooler with a 240mm radiator that takes two 120mm fans. That radiator size is the popular middle ground — more cooling capacity than a 120mm or air tower, less bulk than a 280mm or 360mm unit — and it fits the dual-120mm radiator mount found in most modern mid-tower cases. The four genuine AIOs here (the ML240L, FROSTFLOW X 240, LC240E and MSI E240) are all true 240mm liquid coolers; if a 240mm radiator is your requirement, choose from those.
Fitment is the first practical check, and it is non-negotiable. Confirm your case officially supports a 240mm radiator (usually in the front or top), and that your CPU socket is included in the cooler’s mounting kit. A 240mm AIO needs the radiator-and-fan assembly bolted to a panel with clearance for the tubing, so verify the space before you buy. This matters more for liquid coolers than air, since the radiator location is fixed by your case’s mounting points.
Then weigh liquid against air honestly, because two of the coolers on this list are air, not 240mm AIOs. A 240mm liquid cooler moves heat to a radiator away from the socket, often cooling hot, high-core-count CPUs effectively while keeping the area around the socket clear. A top air cooler like the Peerless Assassin 120 SE or the Hyper 212 Black has no pump to fail and is excellent value, but is bulkier around the socket and is not a 240mm radiator solution. Decide which approach you actually want before comparing prices.
Finally, factor in RGB, noise and budget. If lighting matters, the RGB and ARGB AIOs here tie into motherboard software for a coordinated look, while plainer options focus the money on cooling. All these coolers use PWM fans that ramp with load to balance noise and performance. Set your budget — genuine 240mm AIOs here run from around $52 to around $123, with capable air alternatives from around $26 — confirm your case and socket fitment, decide between liquid and air, and pick the cooler that matches your CPU and your build. For a true 240mm setup, stick to the four AIOs.
Frequently Asked Questions
What exactly is a 240mm CPU cooler?
It is an all-in-one (AIO) liquid cooler whose radiator measures 240mm long and accepts two 120mm fans. The pump sits on the CPU and circulates coolant to that radiator, where the fans dissipate the heat. The 240mm size is a popular balance of cooling capacity and case compatibility. Four coolers in this guide — the ML240L, FROSTFLOW X 240, LC240E and MSI E240 — are genuine 240mm AIOs of this type.
Are the Hyper 212 and Peerless Assassin 240mm coolers?
No, and we have flagged this clearly. Both are air coolers, not 240mm AIOs. The Cooler Master Hyper 212 Black is a single 120mm air tower, and the Thermalright Peerless Assassin 120 SE is a dual-tower 120mm air cooler. They appear alongside 240mm coolers because they are excellent-value cross-shopped alternatives, but if you specifically need a 240mm radiator AIO, choose one of the four genuine liquid coolers instead.
Will a 240mm AIO fit my case?
Check your case specifications for 240mm radiator support, usually listed for the front or top mount, before buying. You also need the radiator-and-fan assembly to clear other components, and your CPU socket must be supported by the cooler’s mounting hardware. Most modern mid-tower and larger cases accommodate a 240mm radiator, but always confirm the official support and clearance for your specific model.
Is a 240mm AIO better than a high-end air cooler?
It depends on your priorities. A 240mm AIO often cools hot, high-core-count CPUs effectively and keeps the area around the socket clear, with optional RGB. A top air cooler like the Peerless Assassin 120 SE rivals entry AIOs in cooling, has no pump to fail, and costs less. If you want a clean liquid-cooled look and maximum headroom, go AIO; if you value simplicity, reliability and value, a great air cooler is a strong alternative.
Related Guides
- Best CPU Coolers
- Best Air CPU Coolers
- Best Non Conductive Thermal Paste
- Best Case Fans for Airflow
- Best PC Cases for Airflow
- Best Budget Gaming Setup
Affiliate Disclosure: As an Amazon Associate, we earn from qualifying purchases. If you click a link and make a purchase, we may earn a small commission at no extra cost to you. Prices and availability are accurate as of publication and may change.
