Skylake covers two very different platforms: 6th gen Core chips on LGA 1151, such as the Core i7-6700K, and Skylake-X chips on LGA 2066, such as the 10-core Core i9-7900X. This guide to the best Skylake CPU coolers picks six models whose specs list both sockets, so one cooler fits either system, with Amazon US data from November 2026.
Quick verdict
For most Skylake systems, the Thermalright Peerless Assassin 120 Mini Black is the best value: 135mm tall, six heat pipes and LGA115x plus LGA2066 support for about $34 on Amazon US as of November 2026. For a Skylake-X chip, the be quiet! Pure Loop 2 FX 360 gives the most capacity of any pick here.
| Cooler | Type | Height or radiator | LGA 1151 | LGA 2066 | Best for | Amazon US, Nov 2026 |
|---|---|---|---|---|---|---|
| Thermalright Peerless Assassin 120 Mini Black | Single tower | 135mm | Yes (115X) | Yes | Best value, both platforms | about $34, 4.6 stars, 173 ratings |
| Noctua NH-U12S redux | Single tower | 158mm | Yes | Yes, per review list | Quiet, 6-year warranty | about $60, 4.8 stars, 4,437 ratings |
| Thermalright Frozen Notte 240 Black ARGB V2 | 240mm AIO | 240mm | Yes | Yes | Skylake-X on a budget | about $47, 4.6 stars, 467 ratings |
| be quiet! Pure Loop 2 FX 360mm | 360mm AIO | 360mm | Yes | Yes | Best for Core i9-7900X | about $70, 4.6 stars, 589 ratings |
| Thermalright SI-100 Black | Low profile | 74.8mm | Yes (115X) | Yes | Small cases | about $27, 4.5 stars, 108 ratings |
| Thermalright AXP-120-X67 Black ARGB | Low profile | 67mm | Yes (115X) | Yes (20xx) | Slim cases | about $33, 4.5 stars, 108 ratings |
Prices and ratings are Amazon US snapshots as of November 2026 and will change. Socket support is from manufacturer pages, reviews or listings; confirm your mounting kit before installing.
How we picked the best Skylake CPU coolers
We began with coolers sold on Amazon US in November 2026 and kept only models whose manufacturer page, review spec list or listing names both the LGA115x family and LGA2066. That rule reflects how Skylake is split: mainstream chips use LGA 1151, while Skylake-X high-end desktop chips use LGA 2066.
The two platforms have very different heat loads. Intel lists the Core i7-6700K and Core i5-6600K at 91W, while the Core i9-7900X is a 140W chip. None of these ship with a cooler, according to Intel. So we included compact and low profile coolers suited to 91W chips plus AIOs for the 140W Skylake-X part.
Few coolers in the Amazon data list LGA2066 in a source we could confirm, which is why this guide has six picks rather than seven. We did not test any cooler ourselves and quote no temperatures.
Skylake cooler reviews
The six coolers below are ordered from the best all-round value to the most specialized. Each review gives the verified socket support for LGA 1151 and LGA 2066, the chip class the cooler suits, its fit requirements and the November 2026 Amazon data, followed by a buy-or-skip line.
Thermalright Peerless Assassin 120 Mini Black
The Peerless Assassin 120 Mini Black is the best value Skylake cooler because it covers both platforms in a compact size. Thermalright lists 125x110x135mm, six 6mm heat pipes and a TL-D12B 120mm fan rated 1500rpm, 25.6 dBA and 66.87 CFM, with Intel LGA115X, LGA1200, LGA1700, LGA1851, LGA2011 and LGA2066 plus AM4 and AM5.
At 135mm it fits many micro-ATX cases from the Skylake era that cannot take a 155mm tower, while six heat pipes give more capacity than typical compact coolers. That makes it a sensible upgrade for a Core i7-6700K at its 91W rating, and a reasonable choice for lighter Skylake-X work.
As of November 2026 it listed around $34 with 4.6 stars from 173 ratings, a modest sample. Thermalright does not state the warranty or RAM clearance on its page, so check memory height on boards with slots close to the socket.
- Pros: six heat pipes at 135mm; LGA115X and LGA2066 listed; low price
- Cons: small review base; warranty and RAM clearance not stated
Buy if you want one cooler that fits either Skylake socket in a smaller case. Skip if you run a Core i9-7900X under long all-core loads.
Noctua NH-U12S redux
The NH-U12S redux is the quiet, long-warranty pick. An aphnetworks review lists a 158mm height, a 120mm NF-P12 redux-1700 fan and socket support for LGA2066, LGA2011, LGA1200 and LGA115x plus AM4, and a QuietPC listing confirms LGA1851, LGA1700, LGA1200, LGA115x, AM5 and AM4 with a 6-year warranty.
The review-era socket list is the evidence for LGA2066, since Noctua’s own page was not readable when we checked. Confirm the mounting kit in the box covers LGA2066 before you buy for a Skylake-X system. On LGA 1151, support is confirmed by both sources.
As of November 2026 it listed around $60 with 4.8 stars from about 4,440 ratings, the largest rating base here. It suits a Core i7-6700K well and handles a Core i9-7900X in gaming, though long all-core loads favor an AIO.
- Pros: 6-year warranty; strong ratings; quiet fan design
- Cons: LGA2066 support from an older review list; 158mm height
Buy if you want a quiet tower for an LGA 1151 build. Skip if you need confirmed LGA2066 hardware in the box.
Thermalright Frozen Notte 240 Black ARGB V2
The Frozen Notte 240 Black ARGB V2 is the budget AIO for Skylake-X. Thermalright lists TL-E12B-S 120mm fans, a pump rated 5300rpm and a 5-year warranty, with Intel LGA115X, LGA1200, LGA1700, LGA1851, LGA2011 and LGA2066 plus AMD AM4, AM5, AM3(+) and FM.
A 240mm radiator gives a 140W Core i9-7900X more headroom than any single tower here, and the 5-year warranty is long for the price. The Amazon listing gives fans rated 2000rpm and 72.37 CFM, so there is plenty of airflow, with more noise at full speed.
You need a case with a 240mm mount, which many Skylake-era mid-towers have at the front or top. As of November 2026 it listed around $47 with 4.6 stars from 467 ratings.
- Pros: LGA2066 and LGA115X listed; 5-year warranty; low price for a 240mm AIO
- Cons: louder at full fan speed; needs a 240mm mount
Buy if you run Skylake-X and want an AIO on a budget. Skip if your case lacks a 240mm mount.
be quiet! Pure Loop 2 FX 360mm
The Pure Loop 2 FX 360mm is the pick for a Core i9-7900X. The Amazon listing gives socket support for Intel 1700, 1200, 2066 and 115x plus AM5 and AM4, three Light Wings 120mm high-speed fans and an ARGB-PWM hub for up to six devices; a review of the 240mm FX version notes a refill port.
A 360mm radiator gives the 140W Skylake-X chip the most headroom in this guide, which matters for long rendering or encoding loads. LGA1851 is not listed, so the cooler will not move to a Core Ultra board without confirmation from be quiet!.
As of November 2026 it listed around $70 with 4.6 stars from 589 ratings. You need a case with a 360mm front or top mount, which some older mid-towers lack, so check before ordering.
- Pros: largest radiator here; LGA2066 listed; lighting hub included
- Cons: LGA1851 not listed; needs a 360mm mount
Buy if you run Skylake-X under heavy loads. Skip if your case cannot take a 360mm radiator.
Thermalright SI-100 Black
The SI-100 Black is the Skylake pick for small cases. Thermalright lists 120x108x74.8mm, six 6mm heat pipes and a 25mm TL-E12B fan rated 2000rpm, 27.7 dBA and 72.37 CFM, with Intel LGA115X, LGA1200, LGA1700, LGA1851, LGA2011 and LGA2066 plus AM4 and AM5.
At 74.8mm it fits shoebox ITX and compact cases that clear about 75mm, which suits a small Core i5-6600K or i7-6700K system. Six heat pipes and a full-thickness fan give it more capacity than slimmer coolers, and the fan can be replaced with any 120mm model later.
As of November 2026 it listed around $27 with 4.5 stars from 108 ratings. Mini-ITX boards for LGA2066 are rare, so most buyers will use it on LGA 1151.
- Pros: six heat pipes at 74.8mm; standard 25mm fan; LGA2066 listed
- Cons: small review base; warranty not stated
Buy if your Skylake build lives in a small case with 75mm of clearance. Skip if your case allows less than 75mm.
Thermalright AXP-120-X67 Black ARGB
The AXP-120-X67 is for slim cases with about 67 to 70mm of clearance. Thermalright gives a 52mm heatsink plus a 15mm TL-C12015 fan, 67mm in total, with six 6mm heat pipes and socket support for LGA115X, LGA1200, LGA1700, LGA1851, LGA20xx, AM4 and AM5.
It suits slim LGA 1151 builds with a 65W Skylake chip such as a Core i5 or i7 non-K, and can manage a 91W K chip with its fan working harder. The black ARGB listing adds lighting, useful only if the case has a window.
As of November 2026 it listed around $33 with 4.5 stars from 108 ratings. Its wide footprint can overhang tall RAM, so pair it with low profile memory.
- Pros: 67mm with six heat pipes; very wide socket list
- Cons: large footprint; slim fan works hard on K chips
Buy if your case clears about 70mm. Skip if you use tall RAM on a small board.
Skylake cooler buying guide
Skylake systems are now several years old, so the cooler choice is as much about mounting as about capacity. The four checks below cover sockets, chip heat, case age and reuse, in the order that usually decides which of the six picks fits your build.
Confirm the exact socket
LGA 1151 uses the LGA115x 75x75mm hole pattern, while LGA 2066 uses its own square mounting around the socket retention frame. Newer LGA1700 and LGA1851 boards use a 78x78mm pattern. Check that the cooler’s kit names your socket, since a cooler that lists only LGA1700 and AM5 will not fit Skylake.
Match capacity to the chip
The Core i7-6700K and i5-6600K are 91W parts, so a good single tower or low profile cooler with six heat pipes is enough for stock settings. The Core i9-7900X is rated at 140W, and overclocking any Skylake chip raises power beyond its rating, so a 240mm or 360mm AIO is the safer choice there.
Check older case clearance
Skylake-era cases vary widely in cooler height and radiator support. A Noctua study reported by The FPS Review found that more than half of 100-plus cases deviated significantly from their listed cooler clearance. Measure your case before buying, especially for the 158mm NH-U12S redux.
Think about reuse
If you plan to move to a new platform later, check that the cooler also lists LGA1851 or AM5. All the Thermalright picks do, as does the NH-U12S redux; the Pure Loop 2 FX 360 lists AM5 but not LGA1851. Buying with reuse in mind makes an upgrade for an old system better value.
Skylake cooler FAQ
These are the questions Skylake owners ask most when replacing or upgrading a cooler. The answers draw on the specs and listings cited above, not on our own temperature testing, because results vary with the case, the chip sample and any overclock you run.
Do Skylake K chips come with a cooler?
No. Intel’s spec pages say the boxed Core i7-6700K and Core i9-7900X do not include a fan or heat sink. If you bought one second-hand without a cooler, any pick in this guide that lists your socket is a reasonable match at stock settings, with the AIOs better suited to the 140W Skylake-X chip.
Are the best Skylake CPU coolers for LGA 1151 also fine for Coffee Lake?
Yes. Skylake, Kaby Lake and Coffee Lake desktop chips all use LGA 1151, and the LGA115x mounting pattern is shared, so any cooler here that lists LGA115x mounts on them. Coffee Lake chips with more cores can run hotter, so lean toward the larger picks for them.
Can a low profile cooler handle a Core i7-6700K?
At stock settings, a six-pipe low profile cooler such as the SI-100 can handle the chip’s 91W rating, with its fan working harder under load. If you overclock, a full tower or AIO is a better match, since overclocking raises power well above the rating.
Will these coolers fit Skylake-X workstation boards?
All six list LGA2066 support, which covers Skylake-X desktop boards such as X299 models. Some workstation boards have tightly packed memory slots on both sides of the socket, so check RAM clearance with tower coolers, or choose an AIO for the most room around the socket.
Conclusion
Buy the Thermalright Peerless Assassin 120 Mini Black for most Skylake systems: it lists both LGA 1151 and LGA 2066, fits smaller cases at 135mm and costs about $34 as of November 2026. If you run a 140W Core i9-7900X under heavy loads, choose the be quiet! Pure Loop 2 FX 360mm instead.
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