Best CPU Coolers for Overclocking (2026 Buyer’s Guide)

The Noctua NH-D15 chromax.Black Dual-Tower CPU Cooler provides essential hardware performance for custom PC builds and workstation upgrades. Engineered to manage demanding electrical or thermal workloads, this model incorporates Proven premium heatsink (more than 300 awards and recommendations from together with Extra-wide 140mm dual-tower design with 6 heatpipes and dual fans. PC builders and system integrators will benefit from the efficient internal layout, which simplifies system assembly while supporting high operational stability. The design helps maintain consistent hardware responsiveness across intensive computing tasks, gaming sessions, and daily multitasking workloads. Physical dimensions measuring 6.49"L x 5.91"W x 6.34"H allow for straightforward spatial planning prior to final placement.

Built using resilient structural components, this unit features a sturdy outer housing engineered to resist operational wear. Precision manufacturing ensures that all joints and surface connections remain firmly aligned during regular daily activity. Dual-fan design with renowned, award-winning NF-A15 140mm fans with reinforces overall physical stability over extended service periods. Premium Copper (base and heat-pipes), aluminium (cooling fins), soldered joints & nickel plating construction maintains structural integrity and cosmetic appearance under routine handling. Structural integrity remains firm throughout regular usage, giving owners peace of mind. Maintaining adequate interior case airflow and clean ventilation ports preserves peak hardware efficiency during heavy processing workloads.

Initial setup requires placing the unit on a flat, stable surface with adequate clearance around all sides for proper operation. Ensure all power or connection cables are routed neatly without sharp bends to prevent wire strain. Regular care involves wiping exterior housing surfaces with a soft cloth to remove dust buildup. Inspecting mechanical connections periodically preserves operational efficiency and maintains cosmetic appearance over time. Maintaining adequate interior case airflow and clean ventilation ports preserves peak hardware efficiency during heavy processing workloads. Integrating this reliable component into your computer system ensures stable power delivery and long-term electrical protection.

Two numbers decide whether this cooler fits your build. The tower stands 165 mm tall, so a case quoting less CPU cooler clearance is out before you start, and the boxed assembly measures 9.33 by 8.62 by 6.53 inches.

• Memory clearance is 64 mm with a single fan mounted in the middle position.
• With both fans fitted, clearance drops to 32 mm, which rules out most tall heatsinked or lit memory.
• The dual towers overhang the area above the first expansion slot on some boards, worth checking if you run a capture or sound card there.

The usual workaround for tall memory is to raise the front fan on its clips, restoring clearance at the cost of a little airflow through the lower fins. Measure your modules first, because it is the memory rather than the case that trips most builders up.

The SecuFirm2 system uses a backplate and threaded standoffs, so the cooler bolts to the board rather than clipping to it. That takes longer to install than a push-pin cooler but holds even mounting pressure across the whole heatspreader.

• Intel LGA1851, LGA1700, LGA1200 and LGA115x are covered by the included brackets.
• AMD AM5 and AM4 are supported, with an offset mounting option that shifts the coldplate over the hotspot.
• NT-H1 thermal compound, two Low-Noise Adaptors and a PWM Y-cable come in the box.

Fitting is far easier with the board out of the case, or at least in a case with a cutout behind the socket, because the backplate goes on from the rear. Allow twenty minutes for a first install rather than five, and seat the fans last.

Six heatpipes carry heat from a copper base into two aluminium fin stacks, with soldered joints and nickel plating throughout. Two NF-A15 140 mm fans push air through both towers under PWM control, so they idle slowly and only ramp when the processor is genuinely working.

• The included Low-Noise Adaptors cap maximum fan speed for a quieter build at a small thermal cost.
• Large fin surface area and 140 mm fans mean high airflow at low RPM, which is the physics behind quiet air cooling.
• Enough capacity to sit under an overclocked high-core-count desktop processor.

Against an all-in-one liquid cooler there is no pump to fail, no coolant to permeate and no radiator to find space for, and the 6 year manufacturer warranty reflects that simplicity. The trade is the sheer bulk it occupies inside the case.

Height is 158 mm, the figure to check against your case's stated CPU cooler clearance before anything else.

• The asymmetric tower is offset so it does not overhang the RAM slots, leaving room for tall memory heat spreaders underneath
• On most ATX and Micro-ATX boards it also clears the top PCIe slot
• Overall footprint with both fans mounted is roughly 125 x 112 x 158 mm
• SecuFirm2 mounting covers Intel LGA1851, LGA1700, LGA1200 and LGA115x plus AMD AM5 and AM4, with an offset option shifting the base toward the hotspot

Mini-ITX builders should measure carefully, since the compatibility claims are written for ATX and Micro-ATX layouts. Everything needed to mount it, including a long screwdriver and NT-H1 compound, comes in the box.

Two NF-A12x25 120 mm PWM fans sandwich the fin stack in a push-pull arrangement, which is how a 120 mm tower keeps pace with physically larger 140 mm coolers.

• The stack uses copper heat-pipes and base with soldered joints and nickel plating, bonded to aluminium fins
• PWM control lets the motherboard drop both fans close to silence at idle and ramp them only under load
• Low-Noise Adaptors are supplied if you want to cap maximum speed and trade a couple of degrees for quiet
• The black coating covers fans and heatsink alike, matching dark builds without a window compromise

Sustained all-core loads on very high-wattage chips are where any air cooler eventually gives ground to a 360 mm loop. For everyday gaming and mixed work, the acoustics are the real draw here.

The SecuFirm2 system is the reason this range has the reputation it does for fitting cleanly.

• Backplate, spacers and brackets are socket-specific and clearly labelled, and the supplied long-shaft screwdriver reaches down through the fin stack
• Fans clip on with wire retainers, so either fan can be lifted off to reach the mounting screws or the memory slots
• Apply NT-H1 as a small central dot - it is included and needs no curing period before use
• Cover is a 6-year manufacturer warranty, unusually long for a cooling component
• Mounting kits for newer sockets have historically been offered to existing owners

Allow around twenty minutes for a first-time install with the board outside the case, and less if you have fitted a tower cooler before.

The Noctua NH-D15S chromax.Black Premium Dual-Tower CPU provides essential hardware performance for custom PC builds and workstation upgrades. Engineered to manage demanding electrical or thermal workloads, this model incorporates Proven premium heatsink (more than 150 awards and recommendations from together with Asymmetrical, single-fan design for dual-tower performance with high. PC builders and system integrators will benefit from the efficient internal layout, which simplifies system assembly while supporting high operational stability. The design helps maintain consistent hardware responsiveness across intensive computing tasks, gaming sessions, and daily multitasking workloads. Physical dimensions measuring 6.3"L x 5.91"W x 5.31"H allow for straightforward spatial planning prior to final placement.

Built using resilient structural components, this unit features a sturdy outer housing engineered to resist operational wear. Precision manufacturing ensures that all joints and surface connections remain firmly aligned during regular daily activity. Renowned, award-winning NF-A15 140mm fan with Low-Noise Adaptor and PWM reinforces overall physical stability over extended service periods. Premium Copper (base and heat-pipes), aluminium (cooling fins), soldered joints & nickel plating construction maintains structural integrity and cosmetic appearance under routine handling. Structural integrity remains firm throughout regular usage, giving owners peace of mind. Maintaining adequate interior case airflow and clean ventilation ports preserves peak hardware efficiency during heavy processing workloads.

Initial setup requires placing the unit on a flat, stable surface with adequate clearance around all sides for proper operation. Ensure all power or connection cables are routed neatly without sharp bends to prevent wire strain. Regular care involves wiping exterior housing surfaces with a soft cloth to remove dust buildup. Inspecting mechanical connections periodically preserves operational efficiency and maintains cosmetic appearance over time. Maintaining adequate interior case airflow and clean ventilation ports preserves peak hardware efficiency during heavy processing workloads. Integrating this reliable component into your computer system ensures stable power delivery and long-term electrical protection.

Measured at roughly 5.91 x 5.31 x 6.3 inches, this is a full-height dual-tower heatsink, and clearance is the first thing to check.

• Case height is the hard limit - measure from the motherboard tray to the side panel and allow a few millimetres of margin.
• Memory clearance is guaranteed to 65mm in every slot because the lower fins are recessed and only one fan is fitted, so tall heat-spreader kits are not a problem.
• The asymmetric offset shifts the heatsink away from the top PCIe x16 slot, which is what separates this version from the symmetrical flagship model and matters on boards where the first slot sits close to the socket.

Socket support spans LGA1851, LGA1700, LGA1200, LGA115x, AM5 and AM4, so it survives several platform changes.

The mounting kit is a spring-loaded backplate system rather than push-pins, and it is one of the more forgiving installs in this class.

• A backplate goes behind the board, mounting bars screw down onto standoffs, and the heatsink is then held by two spring screws in the centre.
• Fit the heatsink before the board goes into the case where possible; reaching the centre screws in a built machine is fiddly.
• A tube of high-grade thermal compound is included, so there is nothing extra to buy on day one.
• The fan attaches with wire clips and can be raised slightly to clear tall memory.

Retention kits for newer sockets are handled by the manufacturer's own support programme, which is part of why coolers of this type stay usable across several builds rather than one.

Two fin stacks fed by six heatpipes give this heatsink enough dissipation area for a high-core-count processor at stock settings or a moderate overclock.

• The single 140mm PWM fan sits between the towers and takes its speed signal from the board, so it idles quietly and only ramps under load.
• The included low-noise adaptor caps maximum fan speed for anyone building a near-silent machine, at a small penalty in peak cooling.
• Clips for a second fan are supplied, so adding a 120mm or round 140mm fan to the front stack later gives a genuine dual-fan setup.

Against a liquid cooler, the trade is size and looks for simplicity: no pump to fail, no coolant to permeate, and nothing that degrades over a six-year warranty period.

The Noctua NH-U9S chromax.Black 92mm Single-Tower CPU Cooler provides essential hardware performance for custom PC builds and workstation upgrades. Engineered to manage demanding electrical or thermal workloads, this model incorporates Proven premium heatsink (more than 100 awards and recommendations from together with Compact 92mm size for excellent case, RAM and PCIe compatibility fits. PC builders and system integrators will benefit from the efficient internal layout, which simplifies system assembly while supporting high operational stability. The design helps maintain consistent hardware responsiveness across intensive computing tasks, gaming sessions, and daily multitasking workloads. Physical dimensions measuring 4.92"L x 3.74"W x 3.74"H allow for straightforward spatial planning prior to final placement.

Built using resilient structural components, this unit features a sturdy outer housing engineered to resist operational wear. Precision manufacturing ensures that all joints and surface connections remain firmly aligned during regular daily activity. Renowned, award-winning NF-A9 92mm fan with Low-Noise Adaptor and PWM reinforces overall physical stability over extended service periods. Structural integrity remains firm throughout regular usage, giving owners peace of mind. Maintaining adequate interior case airflow and clean ventilation ports preserves peak hardware efficiency during heavy processing workloads. Integrating this reliable component into your computer system ensures stable power delivery and long-term electrical protection.

Initial setup requires placing the unit on a flat, stable surface with adequate clearance around all sides for proper operation. Ensure all power or connection cables are routed neatly without sharp bends to prevent wire strain. Regular care involves wiping exterior housing surfaces with a soft cloth to remove dust buildup. Inspecting mechanical connections periodically preserves operational efficiency and maintains cosmetic appearance over time. Maintaining adequate interior case airflow and clean ventilation ports preserves peak hardware efficiency during heavy processing workloads. Integrating this reliable component into your computer system ensures stable power delivery and long-term electrical protection.

The NH-D15 G2 measures 168mm tall, 150mm wide and 152mm deep with both fans attached, and weighs 1525g. It uses 8 heatpipes and a copper base with aluminium cooling fins, offering roughly 20% more surface area than the original NH-D15. Two NF-A14x25r G2 140mm fans run with a speed-offset between them for acoustic tuning, plus PWM support for automatic speed control and included Low-Noise Adaptors for quieter operation.

• 8 heatpipes paired with copper base and aluminium fin construction
• RAM clearance reaches 59mm in single-fan mode, or 32mm running both fans
• Offset fin design clears the top PCIe x16 slot on most current motherboards

Mounting covers AMD AM5 and AM4 as well as Intel LGA1851, LGA1700, LGA1200 and LGA115x sockets using the Torx-based SecuFirm2+ system, with an included screwdriver so no separate tool purchase is needed. NT-H2 thermal paste ships in the box, covering the first install without buying paste separately.

• Covers current AMD and Intel sockets in one mounting kit
• Included thermal paste and screwdriver simplify a first build
• Dual-tower height and width require checking case clearance before purchase, especially in smaller cases

Because this is a large dual-tower cooler, case clearance matters more than with a smaller air cooler or an all-in-one liquid cooler. At 168mm tall with fans installed, it needs a case built for tall air coolers, and the dual-fan width can interfere with tall RAM modules or the top PCIe slot on some motherboard layouts depending on how the cooler is oriented.

• Requires checking case height clearance before installation, particularly in compact builds
• RAM height clearance drops from 59mm to 32mm if both fans are installed side-by-side
• Heavier coolers like this benefit from a case with horizontal motherboard orientation to reduce long-term socket strain

The Hyper 212 Black uses 4 direct-contact heat pipes paired with a copper base to draw heat away from the CPU, cooled by a single SickleFlow 120 Edge fan. The fan runs across a wide 690-2,500 RPM PWM range, so it can stay quiet during light tasks and speed up automatically under load.

• Copper base plate makes direct contact with the CPU heat spreader
• Aluminum fin stack spreads heat across a wider surface for the fan to carry away
• Tower height measures 152 mm, keeping it compatible with a wide range of case sizes

Pre-applied CryoFuze thermal paste is bundled in the box, so no separate paste purchase or application step is required for a first-time build.

Redesigned mounting brackets support current AMD and Intel platforms out of the box, covering AMD AM5 and AM4 sockets as well as Intel LGA 1851, 1700, 1200, 1151, 1150, 1155, and 1156 sockets.

• Simplified bracket design speeds up installation on newer AM5 and LGA 1851/1700 platforms specifically
• Wide chassis compatibility comes from the 152 mm tower height, which fits most mid-tower and full-tower cases
• Single-tower, single-fan layout keeps clearance requirements smaller than dual-tower coolers

Before installing, checking RAM height and case side-panel clearance against the 152 mm tower height helps avoid a tight fit, particularly with tall heatsink-equipped memory modules.

Within Cooler Master's own Hyper 212 lineup, this Black variant sits as the base model, cooled by a single SickleFlow 120 Edge fan and 4 heat pipes. For heavier sustained loads or higher-end CPUs, Cooler Master's larger Hyper 612 APEX steps up to dual 120mm Mobius fans for additional airflow.

• Same socket compatibility list is shared across the Hyper 212 and 612 lines, easing a future upgrade
• Dual-fan tower coolers generally handle overclocked or higher-wattage CPUs with lower noise at a given cooling load
• An Addressable RGB variant of the Hyper 212 exists within the same series for anyone wanting lighting effects

For most mainstream builds using an AMD R7 or Intel i7-class CPU at stock or mild overclock settings, this single-tower cooler is sized appropriately without needing to step up immediately.

Cooling comes from a dual-tower aluminium fin stack threaded by six 6mm pure copper sintered heat pipes onto a pure copper base, joined by a full electroplating reflow weld rather than adhesive.

• AGHP pipe design keeps the wick working whether the tower sits vertical in a standard case or horizontal in a desktop chassis
• Two 120 x 120 x 25mm TL-C12C PWM fans spin to 1550rpm plus or minus 10 percent on 12V
• Airflow peaks at 66.17 CFM with noise held to 25.6 dB(A) at full speed
• 4-pin PWM headers let the motherboard drop both fans to near silence at idle

Two towers in series means the rear fan pushes air already warmed by the first stack, so the gain over a single tower is real but not double. The practical benefit is thermal mass: short bursts of load barely move the temperature at all.

Measure before ordering. Assembled, the cooler is 125mm long, 135mm wide and 155mm tall, or 4.92 x 5.31 x 6.1 inches.

• Your case needs at least 160mm of CPU cooler clearance for the side panel to close
• The fin stack is cut back over the DIMM slots, so standard and most tall memory heat spreaders clear the front fan
• Very tall lit memory can still force the front fan up a few millimetres, which then eats into panel clearance
• The width can crowd the area above the top PCIe slot on compact micro-ATX boards

In a mid-tower it fits comfortably with room to spare. In a slim or small-form-factor chassis it almost certainly will not, and a 92mm or low-profile cooler is the realistic alternative there.

Metal fasteners for both platforms are in the box, so there is no separate bracket kit to source.

• Intel: LGA 1700, 1200, 1151, 1150 and 1851
• AMD: AM4 and AM5
• Backplate mounting means the motherboard usually has to come out of the case, or at least sit over a cutout in the tray

Fitting order matters. Seat the backplate and standoffs first, mount the bare tower onto the cold plate, then clip both fans on last, because the front fan blocks access to the centre screws. Thermal paste is supplied. Allow around thirty minutes on a first build and keep a long-shaft screwdriver handy for the recessed screws between the towers.

The whole point of this cooler is what it does not collide with inside a small case.

• Height: 110 mm, some 15 mm under a classic 92 mm tower and inside 3U rack limits
• Footprint: 95 x 95 mm, clearing RAM and PCIe slots on all Intel ITX boards and most AMD ones
• Fan: 92 x 92 x 25 mm, PWM controlled
• Materials: copper base and heat pipes, aluminium fins, soldered and nickel plated

Two towers sit side by side rather than as one thick block, so air is pushed across the board from front to back instead of down onto it. That matters in compact and home-theatre cases, where the airflow path already runs parallel to the mainboard.

The SecuFirm2 kit in the box covers Intel LGA1851, LGA1700, LGA1200 and LGA115x, plus AMD AM5 and AM4, with an offset mounting option on AMD that shifts coverage toward the hotter part of the die.

• Fit the backplate and standoffs before dropping the tower on
• Use a small dot of the supplied NT-H1 compound, which does not cure and can be re-seated
• Slide the fan clips on last, once the heatsink is bolted down
• Add the Low-Noise Adaptor inline if the fan is louder than you want at full speed

The mount is spring-loaded and torques down evenly, so it does not depend on a feel for how tight is tight. A 6-year manufacturer warranty covers the assembly.

Treat this as a quiet cooler for mainstream and mid-tier chips rather than an overclocking monster. The 92 mm fan runs on PWM, so it idles slowly and only ramps when package temperature climbs, and the Low-Noise Adaptor caps the top speed if the machine sits on a desk beside you.

Adding a second 92 mm fan in push-pull raises airflow through both towers, and is the usual move for a small case with limited intake. Clips for that second fan are already supplied.

Under sustained loads on high-wattage Core Ultra or Ryzen parts, a full-height 120 or 140 mm tower will hold lower temperatures. The trade is that those coolers do not fit the cases this one exists to serve.