LGA 2011 and its successor LGA 2011-v3 powered Intel’s X79 and X99 high-end desktops, with six- and eight-core Core i7 chips rated from 130W to 150W. The best CPU coolers for LGA2011 builds are getting harder to find, since many new models no longer ship the hardware. These six picks still list LGA 2011 support, from a dual tower to a 360mm AIO.
Quick verdict
Buy the Thermalright Peerless Assassin 120 Black for most X79 and X99 builds: a 157mm dual tower with two fans whose Amazon listing names LGA 2011 and 2066, about $39 as of November 2026. For an overclocked Haswell-E or Sandy Bridge-E chip, the be quiet! Pure Loop 2 FX 360mm adds the most capacity.
| Cooler | Type | Height or radiator | Fans | LGA 2011 source | Best for | Amazon US, Nov 2026 |
|---|---|---|---|---|---|---|
| Thermalright Peerless Assassin 120 Black | Dual tower | 157mm | 2 x 120mm | Amazon listing | Best overall air | about $39, 4.8 stars, 291 ratings |
| be quiet! Pure Loop 2 FX 360mm | 360mm AIO | 360mm radiator | 3 x 120mm | Amazon listing | Overclocked 6- and 8-core chips | about $70, 4.6 stars, 589 ratings |
| Cooler Master MasterLiquid ML240L RGB V2 | 240mm AIO | 277 x 119.6 x 27.2mm | 2 x 120mm | Amazon listing | 240mm cases | about $90, 4.6 stars, 9,608 ratings |
| Thermalright Frozen Notte 240 Black ARGB V2 | 240mm AIO | 240mm radiator | 2 x 120mm | Maker page | Budget liquid | about $47, 4.6 stars, 467 ratings |
| Thermalright Aqua Elite 360 V3 | 360mm AIO | 360mm radiator | 3 x 120mm | Listing title only | Budget 360mm | about $53, 4.8 stars, 115 ratings |
| Thermalright AXP120-X67 | Low profile | 67mm | 1 x 120mm slim | Maker page | Compact X99 or workstation cases | price not captured, 4.8 stars, 23 ratings |
Prices and ratings are Amazon US snapshots as of November 2026 and will change. The source column shows where LGA 2011 support was confirmed.
How we selected these coolers
This is a research-based roundup, not a lab test. Wikipedia’s LGA 2011 entry dates the socket to November 2011 and lists the X79 chipset for Sandy Bridge-E and Ivy Bridge-E, and X99 with LGA 2011-v3 for Haswell-E and Broadwell-E. It gives TDPs of 130W for the i7-3930K, i7-3960X and i7-4960X, 140W for the i7-5960X and 150W for the i7-3970X.
We searched the Amazon US data collected on November 11, 2026, including an “lga 2011 cpu cooler” query, and kept coolers whose maker page or listing names LGA 2011. We preferred larger review bases but accepted two niche picks because so few current coolers still list the socket.
Specs come from Thermalright, be quiet! and Cooler Master data where available, otherwise the Amazon listing. We did not test temperatures or noise. Ranking follows capacity, fit and evidence quality, never commission.
Square ILM, narrow ILM and the 2011-v3 question
Wikipedia describes two LGA 2011 cooler mounting styles. The square ILM uses an 80 x 80mm pattern and is the standard type. The narrow ILM uses a 56 x 94mm pattern for space-constrained builds. Both use M4 x 0.7 threads, and each needs a matching heatsink, so a cooler made for one will not mount on the other.
LGA 2011-v3 on X99 is electrically different and not backward compatible with older CPUs, but coolers that list “LGA 2011” or “2011-3” use the same M4 threaded mounting holes around the socket. That is why one bracket often covers both, though you should confirm it in the cooler manual.
Most consumer coolers that list LGA 2011 are built around the square layout. If your board is a server or workstation model, check which ILM it uses before ordering. That check matters more than any other in this guide.
The best CPU coolers for LGA2011, reviewed
The six picks run from the best overall air cooler to the liquid and compact options. Each entry covers who it suits, the specs we could source, socket support, pros and cons, and a buy-or-skip line. Prices are Amazon US snapshots as of November 2026, so check the listing before buying.
Thermalright Peerless Assassin 120 Black
The Peerless Assassin 120 Black is the best overall pick for LGA 2011 because it is one of the few large dual towers whose current listing names the socket. Two 120mm fans and six heat pipes suit a 130W i7-3930K or 140W i7-5960X at stock, and the price is low for that capacity. It fits most full ATX mid-towers.
The Amazon listing gives 125 x 135 x 157mm, six 6mm heat pipes, two TL-C12B 120mm fans at 1500rpm rated 66.17 CFM and up to 25.6 dBA, and Intel LGA 1150, 1151, 1155, 1156, 1200, 1700, 2066 and 2011 plus AM4 and AM5. It describes an offset layout to clear the first PCIe slot. Its 245W figure is a seller claim.
It was listed around $39 on Amazon US as of November 2026, rated 4.8 out of 5 from about 290 ratings. X79 and X99 boards often place RAM slots on both sides of the socket, so check DIMM height against the heatsink.
- Pros: LGA 2011 and 2066 named in the listing; dual tower with two fans; offset design for the first PCIe slot
- Cons: smaller review base than the SE version; RAM on both sides of the socket can clash with tall DIMMs
Buy if you want strong air cooling on X79 or X99 for under $40. Skip if your RAM is taller than the cooler allows or your case is under 162mm.
be quiet! Pure Loop 2 FX 360mm
The Pure Loop 2 FX 360mm is the pick for an overclocked six- or eight-core HEDT chip. A 360mm radiator spreads heat across three fans, and moving the cooler off the socket leaves all eight DIMM slots clear on quad-channel boards. It suits mid-towers and full towers with a 360mm mount.
The Amazon listing names three Light Wings 120mm fans, an ARGB-PWM hub and Intel 1700, 1200, 2066, 115x and 2011(-3) square ILM support, plus AM5 and AM4. A review of the 240mm FX variant lists a 277 x 120 x 27mm radiator, so check the 360mm version’s length against your case. LGA 1851 is not listed.
It was listed around $70 on Amazon US as of November 2026, rated 4.6 out of 5 from about 590 ratings. The square ILM wording is useful: it confirms the standard X79 and X99 mounting rather than the narrow server pattern.
- Pros: 360mm capacity; square ILM support named; leaves RAM slots clear
- Cons: needs a 360mm mount; no LGA 1851 support if you upgrade later
Buy if you overclock a 2011 or 2011-v3 chip and have a 360mm mount. Skip if your case lacks space for a 360mm radiator.
Cooler Master MasterLiquid ML240L RGB V2
The ML240L RGB V2 is the 240mm AIO for LGA 2011 cases without room for a 360mm radiator. It is one of the most widely reviewed AIOs and one of the few whose listing names both LGA 2011 and 2011-v3. It suits stock or lightly tuned HEDT chips in compact mid-towers.
The Amazon listing gives a 277 x 119.6 x 27.2mm radiator, a third-generation dual-chamber pump, two SickleFlow 120 ARGB fans, and Intel LGA 2066, 2011-v3, 2011, 1366, 1200 and 115x support, with LGA 1700 via a separate kit. We did not check the Cooler Master page for this model.
It was listed around $90 on Amazon US as of November 2026, rated 4.6 out of 5 from about 9,600 ratings. For a 150W i7-3970X under heavy load, the 360mm option has more margin.
- Pros: LGA 2011 and 2011-v3 named; huge review base; RAM-friendly
- Cons: priced above some 360mm AIOs; 240mm capacity for 140W to 150W chips
Buy if your case only fits 240mm. Skip if a 360mm mount is available.
Thermalright Frozen Notte 240 Black ARGB V2
The Frozen Notte 240 V2 is the budget liquid option. Thermalright’s page for the Frozen Notte 240 Black ARGB names Intel 2011 and 2066 among its sockets, and the price undercuts the Cooler Master by about $40. It suits builders who want a 240mm AIO on X79 or X99 at the lowest cost.
Thermalright’s page lists TL-E12B-S 120mm fans, a pump at 5300rpm, Intel 115x, 1200, 1700, 1851, 2011 and 2066 plus AMD AM4, AM5 and AM3(+), and a five-year warranty. The Amazon V2 listing adds two fans at up to 2000rpm rated 72.37 CFM, but its socket list omits LGA 2011.
It was listed around $47 on Amazon US as of November 2026, rated 4.6 out of 5 from about 470 ratings. Because the listing and maker page differ, confirm that LGA 2011 standoffs are in the box before removing your old cooler.
- Pros: low price; five-year warranty on the maker page; LGA 2011 on the maker page
- Cons: Amazon listing omits LGA 2011; fans can be loud at 2000rpm
Buy if you want the cheapest 240mm AIO with maker-listed LGA 2011 support. Skip if you want the socket confirmed on the listing as well.
Thermalright Aqua Elite 360 V3
The Aqua Elite 360 V3 is the budget 360mm option, but with a caveat. One Amazon listing names Intel LGA 1150 to 1200, 2011, 1700 and 1851, while Thermalright’s page lists only 115x, 1200, 1700 and 1851. It suits builders willing to confirm the bracket before installing.
Thermalright’s page lists TL-C12B-S V2 120mm fans at 1500rpm rated 66.17 CFM and 25.6 dBA, a pump up to 2800rpm and a three-year warranty. The 2011-naming listing shows 4.8 out of 5 from about 115 ratings at around $53 on Amazon US as of November 2026.
Because the manufacturer does not list LGA 2011, we rank it below the coolers with clearer support. If the 2011 standoffs are included, it offers 360mm capacity for about the price of a 240mm AIO.
- Pros: 360mm capacity at a low price; three-year warranty; quieter 1500rpm fans
- Cons: LGA 2011 only in one listing title; small review base for that listing
Buy if you want a cheap 360mm AIO and will check the hardware on arrival. Skip if you need guaranteed LGA 2011 support.
Thermalright AXP120-X67
The AXP120-X67 is the compact pick for X99 and X79 builds in short cases or workstation chassis. At 67mm with a 120mm slim fan and six heat pipes, it is one of the few low-profile coolers that lists LGA 2011 and 2011-3. It is meant for stock chips with modest loads rather than overclocks.
Thermalright’s page lists a 52mm heatsink with a 120 x 120 x 15mm TL-C12015 fan for 67mm total, six 6mm heat pipes, and Intel 115x, 1200, 1700, 1851, 2011, 2011-3 and 2066 plus AM4 and AM5. The Amazon listing had only 23 ratings, at 4.8 out of 5, and no price was captured in our November 2026 data.
A low-profile cooler on a 130W to 150W HEDT chip will run its fan harder than a tower, so keep loads moderate and case airflow good.
- Pros: 67mm height; LGA 2011 and 2011-3 on the maker page; six heat pipes
- Cons: tiny review base; limited capacity for 130W-plus chips; price not confirmed
Buy if your case cannot fit a tower and you run a stock chip. Skip if you have room for the Peerless Assassin.
Buying guide for LGA 2011 coolers
HEDT chips run warmer than mainstream ones, and their boards have unusual layouts, so a few checks save trouble. These cover ILM type, RAM clearance, radiator room and older coolers you may still find, and they take only a few minutes with your board manual open.
Choosing the best CPU coolers for LGA2011 by ILM type
Check whether your board uses the square or narrow ILM. Wikipedia notes the two patterns are 80 x 80mm and 56 x 94mm, and each needs a matching heatsink. The Pure Loop 2 FX names square ILM explicitly; the others list LGA 2011 without that detail, so confirm with the maker if your board is a server design.
Desktop X79 and X99 boards are the usual home for these coolers, but always read your board manual before buying.
Size for 130W to 150W
The X79 and X99 Core i7 chips we checked range from 130W to 150W, higher than most mainstream Intel chips of their eras. A dual tower like the Peerless Assassin is a reasonable minimum for stock use, and a 360mm AIO is the better choice for overclocks.
Overclocking HEDT chips raises power sharply. We do not quote figures, since they depend on the chip and voltage.
RAM on both sides of the socket
Many quad-channel boards place DIMM slots on both sides of the CPU, so a wide tower can sit over RAM on each side. Check the heatsink’s clearance against your RAM height, or pick an AIO, which leaves every slot clear. Low-profile RAM also helps if you prefer air.
A Noctua study of more than 100 cases found that 56 deviated significantly from their listed cooler clearance, so measure case height as well.
Older coolers you may still find
Cooler Master’s older Hyper 212 Black Edition (RR-212S-20PK-R1) lists LGA 2011-v3, 2011 and 2066, at 158.8mm with four heat pipes and a two-year warranty. It was not in our Amazon data, so new stock may be hard to find. Thermalright’s standard Phantom Spirit 120 also lists 2011 at one retailer.
If you find these from a reputable seller, they are reasonable alternatives to the picks above.
FAQ
These answers cover the common LGA 2011 questions about mounting types, CPU heat and reusing coolers. They draw on Wikipedia’s socket entry and the cooler listings above, and we do not quote temperatures because we did not test these coolers on X79 or X99 hardware ourselves.
Do LGA 2011 coolers fit LGA 2011-v3?
Usually yes. The two sockets differ electrically and are not CPU-compatible, but coolers that list both, such as the ML240L RGB V2 and AXP120-X67, mount with the same threaded posts. Check that your cooler names 2011-3 or 2011-v3, or ask the maker, before relying on it.
Do LGA 2066 coolers fit LGA 2011?
Many coolers list LGA 2011 and 2066 together, as the Peerless Assassin 120 Black does, which suggests shared square-ILM hardware. We have not verified this for every model, so only buy a cooler that names LGA 2011 directly. Do not assume 2066 support alone is enough.
Is a 240mm AIO enough for an i7-5960X?
At stock, a 240mm AIO like the ML240L RGB V2 should cope with the chip’s 140W TDP in a case with good airflow. For an overclock, a 360mm radiator such as the Pure Loop 2 FX gives more margin. We have not seen reliable independent tests of these exact pairings.
What about narrow ILM server boards?
Narrow ILM boards use a 56 x 94mm pattern and need a cooler built for it. None of the picks here explicitly lists narrow ILM, so they are best for square-ILM desktop boards. For a narrow-ILM server, look for a cooler that names narrow ILM in its specs.
Conclusion
Buy the Thermalright Peerless Assassin 120 Black. Its listing names LGA 2011 and 2066, the dual tower handles 130W to 140W X79 and X99 chips at stock, and it costs about $39 as of November 2026. If you overclock or run a 150W i7-3970X, step up to the be quiet! Pure Loop 2 FX 360mm.
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