Intel’s seventh-generation Core i7 family spans two sockets and a wide power range, from the 35W i7-7700T to the 112W i7-7740X on X299. This guide to the best CPU coolers for i7 7000 series chips matches six coolers to each model, so you buy for your exact socket and power level instead of guessing.
Quick verdict
The Thermalright Peerless Assassin 120 is the most flexible pick for the i7 7000 series: Thermalright lists LGA 115x and LGA 2066, so one 157mm dual tower fits both an i7-7700K on Z270 and an i7-7740X on X299. For a locked i7-7700, the Noctua NH-U12S redux is quieter and simpler, and the NH-L9i suits slim i7-7700T builds.
| Cooler | Type | Height or radiator | LGA 1151 | LGA 2066 | Best i7 match | Amazon US, Nov 2026 |
|---|---|---|---|---|---|---|
| Thermalright Peerless Assassin 120 | Dual-tower air | 157mm | Yes (115x) | Yes | i7-7700K, i7-7740X | about $36 |
| Noctua NH-U12S redux | Single-tower air | 158mm | Yes (115x) | Not listed | i7-7700, quiet | about $60 |
| be quiet! Pure Rock Pro 3 Black | Compact dual tower | about 155mm | Yes | Not listed | i7-7700K overclock | about $55 |
| Thermalright SI-100 Black | Top-flow air | 74.8mm heatsink | Yes (115x) | Yes | Low cases, either socket | about $27 |
| Cooler Master MasterLiquid ML240L RGB V2 | 240mm AIO | 277 x 119.6 x 27.2mm | Yes | Yes | i7-7740X overclock | about $90 |
| Noctua NH-L9i | Low-profile air | 37mm | Yes | No | i7-7700T, slim cases | about $50 |
How we matched coolers to the i7 7000 series
The family is less uniform than its names suggest. Intel’s page lists the i7-7700 at four cores and eight threads, 3.6GHz base and 4.2GHz turbo, a 65W TDP and FCLGA1151, while the i7-7700K is rated at 91W and ships without a cooler. A Wikipedia table lists the i7-7700T at 35W and the i7-7740X at 112W on LGA 2066.
That split drove the selection. Each pick lists LGA 1151 or LGA 115x, and three also list LGA 2066 for X299 owners. We then favored coolers with published heights and meaningful Amazon rating counts. This is a research roundup from spec pages and Amazon US data from November 2026; we did not test these coolers and quote no temperatures.
We already cover the i7-7700K and i7-7700 in their own guides, so this one is for readers who want a single view of the whole family, or who own the less common i7-7740X or i7-7700T. The picks avoid the dual towers and AIOs used in our i7-7700K overclocking list.
Best CPU coolers for i7 7000 series chips, reviewed
Each review explains which seventh-gen i7 the cooler suits, the verified specs, the Amazon rating snapshot and its downsides. Ratings and prices are November 2026 snapshots and will move. Pay attention to the LGA 2066 notes, since a cooler that fits a Z270 board may not include X299 hardware.
Thermalright Peerless Assassin 120
The standard Peerless Assassin 120 is our top pick because it covers both sockets in the family. Thermalright’s page lists Intel 115x, 2011, 2011-3, 2066, 1200, 1700 and 1851 plus AM4 and AM5, with 125 x 135 x 157mm dimensions, six 6mm heat pipes and TL-C12 120mm fans rated at 1550 RPM and 25.6 dBA. The Amazon listing names dual fans.
For an overclocked i7-7700K or the 112W i7-7740X, a six-pipe dual tower gives real headroom at modest fan speeds. Note that the more common Peerless Assassin 120 SE lists only LGA 115X, 1200, 1700 and 1851, so i7-7740X owners must buy the standard model.
It was rated 4.7 out of 5 from about 190 Amazon ratings and listed around $36 on Amazon US as of November 2026. Its 157mm height and dual towers need a standard ATX case and a check on RAM height.
- Pro: lists both LGA 115x and LGA 2066 on the maker page
- Pro: dual tower and two fans at a low price
- Con: easy to confuse with the SE, which lacks LGA 2066
- Con: no stated warranty length
Buy it if you own an i7-7700K or i7-7740X and want strong air cooling. Skip it if your case is under 160mm.
Noctua NH-U12S redux
The NH-U12S redux is the quiet pick for a locked i7-7700. Noctua’s listing gives a 158mm height, five heat pipes, an NF-P12 redux-1700 120mm PWM fan, SecuFirm2 mounting for LGA 1851, 1700, 1200 and 115x plus AM5 and AM4, and a six-year warranty. The listing does not mention LGA 2066.
A 65W i7-7700 is an easy load, so the fan can run slowly in most work. The slim tower does not overhang RAM and does not block the top PCIe slot on most ATX and micro-ATX boards, per the listing, which keeps upgrades simple.
It was rated 4.8 out of 5 from about 4,400 Amazon ratings and listed around $60 on Amazon US as of November 2026. It is also a fine choice for an i7-7700K at stock, though it has less headroom than dual towers for an overclock.
- Pro: six-year warranty and quiet fan
- Pro: full RAM clearance on standard boards
- Con: no LGA 2066 support listed
- Con: one fan limits overclocking
Buy it if you have an i7-7700 or a stock i7-7700K and want quiet. Skip it for the i7-7740X.
be quiet! Pure Rock Pro 3 Black
The Pure Rock Pro 3 Black suits an overclocked i7-7700K on a board with RAM close to the socket. The Amazon listing describes six 6mm copper heat pipes, two Pure Wings 3 120mm PWM fans, a compact offset dual-tower layout and an adjustable front fan, with Intel 1851, 1700, 1200, 1151, 1150 and 1155 plus AM5 and AM4 in the spec field.
be quiet! rates it at 250W, a brand figure we have not checked. The offset design improves RAM and VRM clearance compared with symmetrical dual towers, which helps on compact Z270 boards. The listing gives a height of about 6.1 inches, near 155mm.
It was rated 4.6 out of 5 from about 540 Amazon ratings and listed around $55 on Amazon US as of November 2026. The silver version cost about $40 in the same month if finish does not matter.
- Pro: offset dual tower for RAM clearance
- Pro: explicit LGA 1151 support
- Con: no LGA 2066 listed
- Con: fans rated up to 34.8 dB
Buy it if you overclock an i7-7700K on a micro-ATX board. Skip it for X299.
Thermalright SI-100 Black
The SI-100 Black is the compact choice that fits both sockets. Thermalright’s page lists a 120 x 108 x 74.8mm heatsink, six 6mm heat pipes on a nickel-plated copper base, a TL-E12B 120mm fan rated at 2000 RPM and 27.7 dBA, and Intel 115x, 1200, 1700, 1851, 2011 and 2066 plus AM4 and AM5.
As a top-flow cooler it blows air down over the socket area, which also helps VRM heatsinks, useful on X299 boards. It suits an i7-7700, a stock i7-7700K or a stock i7-7740X in a lower case. The total height with fan is not stated, so add the 25mm fan to the heatsink figure.
It was rated 4.5 out of 5 from about 110 Amazon ratings and listed around $27 on Amazon US as of November 2026. It has less headroom than a dual tower for overclocking.
- Pro: LGA 115x and 2066 on the maker page
- Pro: airflow over VRMs
- Con: limited overclocking headroom
- Con: small review base, no stated warranty
Buy it if your case is low or you want one cooler that fits either socket at stock. Skip it for heavy overclocking.
Cooler Master MasterLiquid ML240L RGB V2
The ML240L RGB V2 is the liquid option for an overclocked i7-7740X or i7-7700K. Its Amazon listing gives a 277 x 119.6 x 27.2mm radiator, a third-generation dual-chamber pump and two SickleFlow 120mm RGB PWM fans, and lists Intel LGA 2066, 2011-v3, 2011, 1366, 1200 and 115x plus AMD AM4. LGA 1700 needs a separate kit.
A 240mm radiator frees the socket area, which helps on X299 boards with large VRM heatsinks and on builds with tall RAM. It is the most reviewed cooler in this guide.
It was rated 4.6 out of 5 from about 9,600 Amazon ratings and listed around $90 on Amazon US as of November 2026. Check that your case has a 240mm mount at the top or front.
- Pro: explicit LGA 2066 and LGA 1151 support
- Pro: very large review base
- Con: costs much more than the Peerless Assassin 120
- Con: needs a 240mm mount
Buy it if you prefer liquid for an overclocked chip. Skip it if a dual tower fits.
Noctua NH-L9i
The NH-L9i is for the 35W i7-7700T and other slim builds. Noctua’s listing gives a 37mm total height, a 95 x 95mm footprint with no RAM or PCIe overhang, an NF-A9x14 92mm slim fan rated up to 2500 RPM and 23.6 dB, SecuFirm2 mounting for LGA 1150, 1151, 1155, 1156 and 1200, and a six-year warranty.
A 35W chip is an ideal match, and a 65W i7-7700 works in a ventilated slim case. It is not suited to the i7-7700K’s 91W rating in tight spaces or to overclocking, and it does not support LGA 2066.
It was rated 4.7 out of 5 from about 3,400 Amazon ratings and listed around $50 on Amazon US as of November 2026.
- Pro: 37mm height for slim and HTPC cases
- Pro: ideal for the 35W i7-7700T
- Con: no LGA 2066 support
- Con: limited headroom for K chips
Buy it if you have an i7-7700T or a slim i7-7700 build. Skip it for the K and X models.
Buying guide for i7 7000 series coolers
Seventh-gen i7 owners need to know their exact model before buying, because socket and power vary so much. The sections below cover the power tiers, the LGA 1151 versus LGA 2066 split, case clearance and fan control, which together narrow six options to the one that fits your PC.
Identify your model’s power tier
Intel and published tables put the family in four tiers: 35W for the i7-7700T, 65W for the i7-7700, 91W for the unlocked i7-7700K and 112W for the i7-7740X. Only the K and X models are unlocked for overclocking, so they are the ones where headroom beyond the rated figure really matters.
Match the cooler to that tier. Slim coolers suit the T model, single towers suit the 65W chip, and dual towers or an AIO suit the K and X models, especially when overclocked.
LGA 1151 versus LGA 2066
The i7-7700, i7-7700K and i7-7700T use LGA 1151 on 100 and 200 series boards, sharing a 75 x 75mm cooler hole pattern with LGA 115x and LGA 1200. The i7-7740X uses LGA 2066 on X299, which needs different mounting hardware that many current coolers no longer include in the box.
Only the Peerless Assassin 120, SI-100 Black and ML240L RGB V2 in this list name LGA 2066. If you own an i7-7740X, choose one of those and confirm the X299 hardware is in the box.
Case clearance and memory
Heights range from 37mm for the NH-L9i to 158mm for the NH-U12S redux. A report on Noctua’s survey of over 100 cases found more than half deviated from their listed cooler clearance, so measure your own case with the side panel removed before buying.
X299 boards often place DIMM slots on both sides of the socket, so dual towers can overhang memory there. The SI-100 and the AIO avoid that issue entirely.
Fan control for quiet use
All picks use PWM fans, so a fan curve in the BIOS controls noise. Keep it flat until the chip is under sustained load, which avoids revving during short turbo bursts on these four-core, eight-thread chips and keeps everyday desktop use close to silent.
For two-fan coolers, use a splitter or a second header like CPU_OPT so both fans follow CPU temperature.
FAQ
These answers cover the questions we see most about cooling seventh-gen Core i7 chips, from which models need a cooler to which coolers fit X299. They rely on Intel’s spec pages, a published Kaby Lake table and the maker and Amazon data above, not our own testing.
Which of the best CPU coolers for i7 7000 series chips fits both sockets?
The Thermalright Peerless Assassin 120, the SI-100 Black and the Cooler Master ML240L RGB V2 each list both LGA 115x and LGA 2066. The Peerless Assassin 120 is the best all-rounder of the three, but make sure you buy the standard model, not the SE, which drops LGA 2066.
Does the i7-7700K come with a cooler?
No. Intel’s specification page states that the boxed i7-7700K has no fan or heatsink, so you need an aftermarket cooler. For stock use, a single tower like the NH-U12S redux is enough; for overclocking, choose a dual tower or a 240mm AIO such as the ML240L RGB V2.
Is the i7-7740X harder to cool than the i7-7700K?
It is rated higher, at 112W versus 91W, and it sits on the X299 platform with different mounting. That means fewer coolers fit, and those that do should offer a little more headroom. Its four cores and eight threads match the i7-7700K, so cooling needs are similar in kind if not in degree.
Conclusion
Buy the Thermalright Peerless Assassin 120 for an i7 7000 series K or X chip. It is the only dual tower here that lists both LGA 115x and LGA 2066, costs about $36, and has headroom for an overclock. Choose the NH-U12S redux for a locked i7-7700 and the NH-L9i only for the 35W i7-7700T.
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