Socket support is the first thing to confirm on an older Intel board, because a cooler that lacks LGA 115x hardware will not mount at all. The best 1151 socket CPU coolers below all list LGA 1151 or LGA 115x in their specs, and every one also includes hardware for newer Intel sockets, so the cooler can follow you to your next motherboard.
Quick verdict
For most LGA 1151 boards, the Thermalright Peerless Assassin 120 SE V2 is the pick: a dual tower with 115X, LGA 1200, 1700 and 1851 mounting and a three-year warranty listed, for about $40. For premium mounting hardware, choose the Noctua NH-U12A chromax.black. For slim Mini-ITX builds, the 57mm ID-Cooling IS-55 fits.
| Cooler | Type | Height or radiator | LGA 1151 listing | Newer sockets listed | Amazon US price, Nov 2026 |
|---|---|---|---|---|---|
| — | — | — | — | — | — |
| Thermalright Peerless Assassin 120 SE V2 | Dual-tower air | 155mm | LGA 115X | LGA 1200, 1700, 1851 | about $40 |
| Noctua NH-U12A chromax.black | Single tower, dual fan | 158mm | LGA 115x (SecuFirm2) | LGA 1200, 1700, 1851 | about $120 |
| Noctua NH-D15 | Dual-tower air | 165 to 168mm | LGA 115x (SecuFirm2) | LGA 1200, 1700, 1851 | about $110 |
| ID-Cooling IS-55 Black | Low profile | 57mm | LGA 1151 named | LGA 1200, 1700, 1851 | about $40 |
| Thermalright AXP90-X53 Full Copper | Low profile | 53mm | LGA 1151 named | LGA 1200, 1700 (1851 in title) | about $36 |
| Thermalright Aqua Elite 120 V3 | 120mm AIO | 120mm radiator | LGA 1151 named | LGA 1200, 1700, 1851 | about $35 |
| Cooler Master MasterLiquid 360L Core ARGB | 360mm AIO | 394 x 119.6 x 27.2mm | LGA 1151 named | LGA 1200, 1700, 1851 | about $88 |
How we checked socket support
This is a research-based roundup, not a lab test. We started from Amazon US listings collected on November 11, 2026, and kept only coolers whose listing or manufacturer page names LGA 1151 or LGA 115x. We then confirmed heights, fans and warranties against manufacturer pages, spec sheets and retailer tables, flagging anything we could not verify.
We also required hardware for at least LGA 1200 and LGA 1700. LGA 1151 shares a 75 x 75mm cooler hole pattern with LGA 1150, 1155, 1156 and 1200, while LGA 1700 and LGA 1851 moved to 78 x 78mm. A cooler that covers both patterns protects your money when you replace the board.
Range mattered too. LGA 1151 systems include Mini-ITX HTPCs with 65W chips like the Core i7-8700 and full ATX gaming rigs with a Core i9-9900K, so the picks run from a 53mm low-profile cooler to a 360mm AIO. Prices, star ratings and review counts are a snapshot from Amazon US as of November 2026. Ranking never follows commission.
The best 1151 socket CPU coolers compared
Each section explains which LGA 1151 build the cooler suits, its verified specs, how it mounts on LGA 115x and the trade-offs. The list moves from the best value tower through two premium Noctua towers to two low-profile coolers and two AIOs. Check your case clearance first if the system is small.
Thermalright Peerless Assassin 120 SE V2
This is our best value pick for LGA 1151 sockets. It suits six- and eight-core K chips such as the Core i7-8700K and i9-9900K in mid-tower cases, and owners who want one cooler that mounts on today’s 1151 board and a future LGA 1700 or 1851 board without buying a separate kit.
The Amazon listing gives 125 x 135 x 155mm, six 6mm heat pipes and two 28mm-thick TL-C12C-X28 V2 120mm PWM fans up to 1,850 RPM, 88.89 CFM and 29.5 dBA. Mounting plates and fasteners cover Intel LGA 1851, 1700, 1200 and 115X plus AM5 and AM4, and TF7 paste is included.
It was listed around $40 on Amazon US and rated 4.7 out of 5 from about 600 ratings as of November 2026, with a three-year warranty in Amazon’s spec table. The front fan can be raised to clear tall RAM, which adds to the 155mm height.
- Pros: dual tower with high-airflow fans; current and legacy Intel hardware in one box; three-year warranty listed.
- Cons: 155mm height; louder at full speed than slower-fan towers.
Buy it if you want a value cooler that will outlast your LGA 1151 board. Skip it if your case clears less than 160mm.
Noctua NH-U12A chromax.black
The NH-U12A chromax.black is the premium mounting pick. Noctua’s SecuFirm2 hardware is well documented across Intel generations, and the cooler suits owners of an LGA 1151 Core i7 who want low noise, an all-black finish and a six-year warranty, with RAM and PCIe clearance on most ATX and Micro-ATX boards.
The Amazon listing gives a 158mm height, seven heat pipes, two NF-A12x25 120mm PWM fans with Low-Noise Adaptors, NT-H1 paste and SecuFirm2 mounting for LGA 1851, 1700, 1200, 115x, AM5 and AM4, with an offset option. Noctua says it does not overhang the RAM slots.
It was listed around $120 on Amazon US and rated 4.8 out of 5 from about 2,840 ratings as of November 2026. It costs about three times the Peerless Assassin V2, so the premium buys quieter fans and refinement rather than a larger heatsink.
- Pros: proven SecuFirm2 mounting across sockets; quiet NF-A12x25 fans; six-year warranty.
- Cons: expensive; 120mm-class capacity.
Buy it if you want a quiet, premium cooler that will move to future builds. Skip it if value matters most.
Noctua NH-D15
The NH-D15 suits LGA 1151 enthusiasts with a Core i9-9900K who want maximum air cooling and quiet operation, and who have a case with about 170mm of clearance. Its SecuFirm2 kit covers LGA 115x as well as newer Intel and AMD sockets, so it can move across several platforms.
The Amazon listing describes a dual tower with six heat pipes, two NF-A15 140mm PWM fans with Low-Noise Adaptors, NT-H1 paste, SecuFirm2 mounting for LGA 1851, 1700, 1200, 115x, AM5 and AM4 and a six-year warranty. A retailer lists 165mm and Amazon’s highlight 168mm, so plan for 168mm.
It was listed around $110 on Amazon US and rated 4.8 out of 5 from about 11,600 ratings as of November 2026. Wide 140mm fans can overhang the first RAM slot, so check memory height.
- Pros: high capacity with low noise; long-lived multi-socket mounting; huge rating base.
- Cons: tall and wide; covers RAM slots.
Buy it if you run an eight-core LGA 1151 chip in a roomy case. Skip it if your case or RAM is tight.
ID-Cooling IS-55 Black
The IS-55 Black is the low-profile pick for LGA 1151 Mini-ITX and HTPC builds. At 57mm with a 120mm slim fan, it suits 65W chips such as the Core i7-8700 and Core i5 non-K parts in slim cases, and its listing names LGA 1151 directly alongside newer sockets.
The Amazon listing specifies 57mm total height, five heat pipes and a 120 x 120 x 15mm PWM fan rated at 54.6 CFM with 13.8 to 31.2 dB(A) noise. ID-Cooling’s page confirms 120 x 120 x 57mm, a copper base and support for LGA 1851, 1700, 1200, 1151, 1150, 1155 and 1156 plus AM5 and AM4.
It was listed around $40 on Amazon US and rated 4.5 out of 5 from about 840 ratings as of November 2026. Its 120mm footprint can overhang RAM or M.2 heatsinks on small boards, and we found no stated warranty.
- Pros: 57mm height with a 120mm fan; LGA 1151 named; current sockets too.
- Cons: wide footprint; limited headroom for K chips; warranty not stated.
Buy it if your slim case allows about 60mm. Skip it if you run a K chip at full power.
Thermalright AXP90-X53 Full Copper
The AXP90-X53 Full Copper is the smallest pick, at 53mm with a compact 95mm footprint. It suits slim LGA 1151 systems where even the IS-55 is too wide or too tall, and builders who value the thermal mass of an all-copper heatsink in a tiny package for 65W chips.
The Amazon listing gives 94.5 x 95 x 53mm, four 6mm heat pipes, a pure copper body and a TL-9015R 92mm slim PWM fan at 2,700 RPM, 42.58 CFM and 22.4 dBA. Sockets named are LGA 1700, 1150, 1151, 1155, 1156 and 1200 plus AM4 and AM5, with LGA 1851 appearing in the title only.
Mounting is worth noting: Thermalright’s listing explains that if the backplate conflicts with components on the back of the board, you can reverse it using the included long screws. It was listed around $36 and rated 4.5 out of 5 from about 150 ratings as of November 2026.
- Pros: 53mm height; small footprint; copper heatsink; reversible backplate option.
- Cons: fast small fan; best kept to 65W-class chips.
Buy it if you need the smallest LGA 1151 cooler here. Skip it if you have room for 57mm or more.
Thermalright Aqua Elite 120 V3
The Aqua Elite 120 V3 suits small LGA 1151 cases that have a 120mm rear or top mount but no room for a tower. It moves heat from the socket to that mount, and it names LGA 1151 along with every socket up to LGA 1851, which makes it easy to carry to a new build.
Thermalright lists a TL-C12B-S V2 120mm fan at 1,500 RPM and 25.6 dBA, a 3,300 RPM pump at 23 dBA, sockets LGA 115X, 1200, 1700 and 1851 plus AM4 and AM5, and a three-year warranty. The Amazon listing adds 5V 3-pin ARGB on pump and fan.
It was listed around $35 on Amazon US and rated 4.6 out of 5 from about 480 ratings as of November 2026. A single 120mm radiator has limited capacity, so pair it with 65W to 95W chips at moderate loads.
- Pros: confirmed three-year warranty; LGA 1151 through 1851; low price.
- Cons: small radiator; radiator dimensions not stated; ARGB may need a header older boards lack.
Buy it if your small case has a 120mm mount but no tower room. Skip it if a tower fits.
Cooler Master MasterLiquid 360L Core ARGB
The 360L Core ARGB is the high-capacity liquid pick for LGA 1151. It suits Core i9-9900K owners with a 360mm mount who want the most cooling capacity here, and its updated universal brackets cover LGA 1700 and AM5 while keeping LGA 1200, 1151, 1150, 1155 and 1156 support.
Cooler Master’s page lists a 394 x 119.6 x 27.2mm aluminum radiator, three 120mm ARGB fans from 650 to 1,750 RPM, 71.93 CFM and 27.2 dBA, and a three-year warranty, with LGA 1851 among its Intel sockets. The Amazon listing adds the Gen S dual-chamber pump with a redesigned copper base.
It was listed around $88 on Amazon US and rated 4.5 out of 5 from about 840 ratings as of November 2026. Older cases rarely support 360mm radiators, so confirm the mount and radiator thickness first.
- Pros: largest capacity here; broad legacy and current sockets; three-year warranty.
- Cons: needs a 360mm mount; pump adds complexity.
Buy it if you run a Core i9-9900K in a case with a 360mm mount. Skip it if your case lacks one.
LGA 1151 socket and mounting guide
Socket details decide whether a cooler mounts at all, and whether it can move to your next board. These sections cover the 115x hole pattern, the two LGA 1151 generations, backplates and clearance, and the jump to LGA 1700, using the verified socket data in this guide.
The 115x hole pattern explained
LGA 1151 uses a square 75 x 75mm cooler hole pattern, the same as LGA 1150, 1155, 1156 and 1200. That is why cooler makers often list these sockets together as LGA 115x, and why an LGA 1200 cooler fits an LGA 1151 board without a new kit or adapter plate.
LGA 1700 and LGA 1851 changed to 78 x 78mm and a different socket height, so older coolers need an updated kit for those. Every pick here includes hardware for both patterns, except that the AXP90-X53 names LGA 1851 only in its title.
Both generations of LGA 1151
Intel used LGA 1151 for two board generations: one for 6th and 7th Gen chips such as the Core i7-6700K and i7-7700K, and one for 8th and 9th Gen chips such as the i7-8700K and i9-9900K. The CPUs are not interchangeable between them, even though the socket name is identical.
For coolers, the difference does not matter. Both use the same 75 x 75mm mounting, so any cooler that lists LGA 1151 or 115x fits either board. What differs is heat output, since the eight-core 9th Gen chips need more cooling than four-core 6th Gen parts.
Backplates and clearance behind the board
Most coolers here use their own backplate on Intel boards. Before installing, check the back of the motherboard behind the socket for components or a case cut-out that is too small, and make sure the case’s motherboard tray opening lets you reach the backplate.
Low-profile coolers are most sensitive to this. Thermalright’s AXP90 listing explains reversing the backplate with longer screws if it conflicts with rear components. In small cases, also confirm cooler height with a margin, since a 2026 Noctua study found 56 of more than 100 cases deviated significantly from listed clearance.
Planning a move to LGA 1700 or 1851
If you expect to replace the board soon, buy a cooler that includes LGA 1700 and LGA 1851 hardware now. All seven picks list LGA 1700, and six name LGA 1851 in their specs or bullets, so they should mount on a newer board without an extra kit or a call to support.
Keep every bracket and backplate in the box after installation. If you sell or reuse the old LGA 1151 system, the original stock cooler or the 115x hardware will make that much easier, and you avoid hunting for parts later.
FAQ
These answers cover the socket questions LGA 1151 owners ask most: whether LGA 1200 coolers fit, how to tell which generation you have, and whether contact frames apply. They use the same verified socket data and Intel specs as the product sections above, so they match the picks and the verdict.
Do LGA 1200 coolers fit an LGA 1151 socket?
Yes. LGA 1200 and LGA 1151 share a 75 x 75mm cooler hole pattern, so a cooler with LGA 1200 hardware mounts on LGA 1151. Confirm the listing names LGA 115x or LGA 1151 and that the Intel brackets and backplate are in the box before you remove the old cooler.
Which of the best 1151 socket CPU coolers is easiest to move to LGA 1700?
Any of the six that list LGA 1700 and LGA 1851 in their specs, such as the Peerless Assassin 120 SE V2 or Noctua NH-U12A chromax.black. The 360L Core ARGB includes updated LGA 1700 brackets. The AXP90-X53 lists LGA 1700 but names LGA 1851 only in its title.
Do I need a contact frame for LGA 1151?
No. Contact frames are aimed at LGA 1700 and LGA 1851, where reports of CPU bending under the stock loading mechanism led to aftermarket frames. LGA 1151 uses a different socket design, and the coolers here mount with their standard brackets and backplates.
Conclusion
For most LGA 1151 boards, buy the Thermalright Peerless Assassin 120 SE V2: it mounts on LGA 115x today and LGA 1700 or 1851 later, with dual-tower cooling for about $40. Choose the ID-Cooling IS-55 for slim cases, and the MasterLiquid 360L Core ARGB if a Core i9-9900K needs liquid.
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