A $100 budget covers almost every kind of CPU cooler, from a cheap single tower to a 360mm liquid cooler, which makes the choice harder rather than easier. This guide to the best cpu coolers for under 100 dollars compares eight air and liquid picks by price tier, so you can see what each extra $20 buys and where spending more stops paying off.
Quick verdict
Most builders should spend about $36 on the Thermalright Phantom Spirit 120 SE, a seven-pipe dual tower that cools most CPUs as well as far pricier air coolers. If you want liquid under $100, the Thermalright Aqua Elite 360 V3 brings a 360mm radiator for about $55 on Amazon US as of November 2026.
- Best overall under $100: Thermalright Phantom Spirit 120 SE.
- Best under $20: Thermalright Assassin X120 Refined SE.
- Best ARGB air: ARCTIC Freezer 36 A-RGB.
- Best Noctua under $100: Noctua NH-U12S redux.
- Best 360mm AIO value: Thermalright Aqua Elite 360 V3.
- Best 240mm AIO features: ARCTIC Liquid Freezer III Pro 240.
- Best known-brand 360mm AIO: Cooler Master 360L Core.
- Best AIO with a screen: NZXT Kraken Plus 240 RGB.
Quick comparison table
All eight coolers were listed under $100 on Amazon US in our November 2026 snapshot, and all list current AMD and Intel sockets in the sources we read, though the Kraken listing names only AM5 and LGA 1851. Treat prices as tiers, not fixed figures. Fan speeds are manufacturer maximums, and noise figures are measured differently by each brand.
| Cooler | Type | Height or radiator | Fans | Amazon rating, Nov 2026 | Amazon US price, Nov 2026 |
|---|---|---|---|---|---|
| Thermalright Assassin X120 Refined SE | Single tower, 4 heat pipes | 148mm | 1 x 120mm | 4.7 (about 1,860) | About $16 |
| Thermalright Phantom Spirit 120 SE | Dual tower, 7 heat pipes | 154mm | 2 x 120mm | 4.8 (about 1,010) | About $36 |
| ARCTIC Freezer 36 A-RGB | Single tower, push-pull | 159mm | 2 x 120mm A-RGB | 4.5 (about 690) | About $36 |
| Noctua NH-U12S redux | Single tower, 5 heat pipes | 158mm | 1 x 120mm | 4.8 (about 4,440) | About $60 |
| Thermalright Aqua Elite 360 V3 | 360mm AIO | 360mm radiator | 3 x 120mm | 4.6 (about 400) | About $55 |
| ARCTIC Liquid Freezer III Pro 240 | 240mm AIO | 240mm radiator | 2 x 120mm | 4.2 (about 890) | About $59 |
| Cooler Master 360L Core | 360mm AIO | 394mm radiator | 3 x 120mm ARGB | 4.7 (about 900) | About $68 |
| NZXT Kraken Plus 240 RGB | 240mm AIO with LCD | 240mm radiator | Single-frame 240mm | 4.5 (about 365) | About $90 |
How we chose the best CPU coolers for under 100 dollars
This is a research-based list built from manufacturer, retailer and review spec pages plus our November 2026 Amazon US data, not from bench testing. Every pick had to be listed under $100 in that snapshot, carry hundreds of Amazon ratings or more, and list current sockets such as AM5 and LGA 1851 or 1700.
We grouped the picks into three tiers. From $15 to $40, air coolers cover most CPUs. From $55 to $70, 360mm and feature-rich 240mm AIOs add radiator capacity for hot chips. Around $90, you mainly pay for extras such as a pump-head screen. That framing shows where your money goes in each step.
Power targets came from Intel and Wikipedia. Intel lists the Core i7-14700K at 253W maximum turbo power and the Core Ultra 5 245K at 159W, while Wikipedia lists many Ryzen chips at 65W to 120W. Hotter chips are where AIOs earn their price; cooler-running chips rarely need more than a good tower.
Product analysis
The eight coolers are ordered by price tier, from the $16 tower to the $90 AIO with a screen. Each entry covers who it suits, the specs we verified, socket support and the trade-off that matters most at its price. Prices are November 2026 Amazon US snapshots and will move.
Thermalright Assassin X120 Refined SE
The Assassin X120 Refined SE is the best cooler under $20 and the floor of this list. Thermalright lists a 148mm height, four 6mm heat pipes and one TL-C12C 120mm fan at 1550rpm, with LGA 115x, 1200, 1700 and 1851 plus AM4 and AM5, and the Amazon listing gives 66.17 CFM, 25.6 dBA and 645g.
It suits 65W chips and mid-range gaming CPUs, but a single four-pipe tower has limited headroom for chips with very high turbo power. It was rated 4.7 out of 5 from about 1,860 Amazon ratings and listed near $16 on Amazon US as of November 2026.
- Pros: very low price, 148mm, large rating base.
- Cons: limited headroom for 200W-plus chips; warranty not stated.
Buy if you have a 65W to mid-range CPU and want to spend as little as possible. Skip if you run a hot Core i7 or i9, where a dual tower costs only $20 more.
Thermalright Phantom Spirit 120 SE
The Phantom Spirit 120 SE is our top pick because it delivers dual-tower capacity for about a third of the budget. Thermalright lists a 154mm height, seven 6mm heat pipes and the TL-C12B V2 fan at 1500rpm, with LGA 115x, 1200, 1700 and 1851 plus AM4 and AM5, and the Amazon listing shows two fans at 25.6 dBA each.
Seven heat pipes and two slow fans cover most gaming and productivity CPUs while staying quiet. It was rated 4.8 out of 5 from about 1,010 Amazon ratings and listed near $36 on Amazon US as of November 2026. Spending more on air brings mostly warranty and brand rather than capacity.
- Pros: seven heat pipes, two slow fans, strong rating, low price.
- Cons: dual-tower width can crowd tall RAM; no lighting.
Buy if you want the best cooling per dollar under $100. Skip if your case clears less than 155mm or you want ARGB.
ARCTIC Freezer 36 A-RGB
The Freezer 36 A-RGB is the ARGB air pick for buyers who also want a long warranty. ARCTIC lists 104x126x159mm, 917g, two P12 PWM PST A-RGB fans at 200 to 2000rpm in push-pull, a 3-pin 5V A-RGB connector, LGA 1851, LGA 1700, AM5 and AM4 support and a six-year warranty.
ARCTIC notes that A-RGB needs a 5V header and is not compatible with 12V RGB, and AMD installs need the motherboard’s original screws. It was rated 4.5 out of 5 from about 690 Amazon ratings and listed near $36 on Amazon US as of November 2026.
- Pros: six-year warranty, push-pull fans, ARGB, contact frame for Intel.
- Cons: no LGA 115x; needs a 5V A-RGB header.
Buy if you want ARGB and a long warranty on a current platform. Skip if your board is LGA 1151 or older.
Noctua NH-U12S redux
The NH-U12S redux is the way to get Noctua’s mounting and six-year warranty well under $100. QuietPC lists a 158mm height, one NF-P12 redux-1700 fan and LGA 1851, 1700, 1200 and 115x plus AM5 and AM4 support, and the Amazon listing adds five heat pipes, NT-H1 paste and SecuFirm2 mounting.
It does not out-cool the Phantom Spirit on paper, since it has fewer heat pipes and one fan, but it is slim, clears RAM easily and carries a strong warranty. It was rated 4.8 out of 5 from about 4,440 Amazon ratings and listed near $60 on Amazon US as of November 2026.
- Pros: six-year warranty, RAM clearance, large rating base.
- Cons: less capacity than the cheaper Phantom Spirit; no lighting.
Buy if you value Noctua’s support and a slim tower. Skip if raw cooling per dollar matters most.
Thermalright Aqua Elite 360 V3
The Aqua Elite 360 V3 is the best value 360mm AIO under $100. Thermalright lists TL-C12B-S V2 fans at 1500rpm, 66.17 CFM and 25.6 dBA, a 2800rpm pump, a three-year warranty and LGA 115x, 1200, 1700 and 1851 plus AM4 and AM5, and the Amazon listing shows three fans with 5V ARGB sync.
A 360mm radiator gives hot chips such as the 253W Core i7-14700K more surface than any air cooler here, while slow 1500rpm fans keep noise in check. You need a 360mm mount, and pump noise never stops. It was rated 4.6 out of 5 from about 400 Amazon ratings and listed near $55 on Amazon US as of November 2026.
- Pros: 360mm radiator for about $55, slow fans, ARGB.
- Cons: needs a 360mm mount; radiator dimensions not stated in text.
Buy if you run a high-power Intel chip and your case takes a 360mm radiator. Skip if your CPU is 65W, where air is cheaper and quieter.
ARCTIC Liquid Freezer III Pro 240
The Liquid Freezer III Pro 240 is for builders who want a feature-rich 240mm AIO. The Amazon listing describes a contact frame for LGA 1851 and LGA 1700, P12 PRO fans, native offset mounting for Intel and AMD, an integrated PWM VRM fan and fan cables routed in the hose sleeve, with LGA 1851, 1700, AM4 and AM5 support.
GamersNexus’ review of the Liquid Freezer III series describes the AMD offset kit and the VRM fan in the pump cap, and ARCTIC’s product page is live. It was rated 4.2 out of 5 from about 890 Amazon ratings and listed near $59 on Amazon US as of November 2026, a lower score than most picks.
- Pros: contact frame, offset mounting, VRM fan, tidy cabling.
- Cons: lower Amazon score; 240mm has less surface than 360mm.
Buy if your case takes 240mm but not 360mm and you want extras. Skip if your case has a 360mm mount, where the Aqua Elite costs less.
Cooler Master 360L Core
The 360L Core is the known-brand 360mm AIO under $70. The Amazon listing gives a 394×119.6×27.2mm radiator, three ARGB PWM fans, a Gen S dual-chamber pump and CryoFuze paste, with AM5, AM4, LGA 1851 and LGA 1700 support and a two-year warranty in the listing.
Cooler Master’s page for the related MasterLiquid 360L Core ARGB lists fans at 650 to 1750rpm and a three-year warranty, so confirm which version you are buying. It was rated 4.7 out of 5 from about 900 Amazon ratings and listed near $68 on Amazon US as of November 2026.
- Pros: 360mm radiator, ARGB, strong rating base.
- Cons: costs more than the Aqua Elite 360; warranty varies by listing.
Buy if you prefer Cooler Master’s support network for a 360mm AIO. Skip if price matters most.
NZXT Kraken Plus 240 RGB
The Kraken Plus 240 RGB is the upper limit of this budget, for builders who want a pump-head screen. The Amazon listing describes a 1.54-inch square LCD controlled through NZXT CAM, a Turbine pump, an RGB Core single-frame fan, pre-applied paste and tool-free brackets for AM5 and LGA 1851.
You pay mainly for the screen: a 240mm radiator at about $90 costs more than the 360mm Aqua Elite. It was rated 4.5 out of 5 from about 365 Amazon ratings and listed near $90 on Amazon US as of November 2026. We could not open NZXT’s site for full radiator specs.
- Pros: LCD screen, clean single-frame fan, simple install.
- Cons: least cooling per dollar here; needs CAM software.
Buy if a screen and NZXT’s look matter to you. Skip if you want maximum cooling for the money.
Buying guide
A $100 budget gives you choices across air and liquid, so the questions are which CPU you have, what your case can hold and which extras you care about. The four checks below cover those points and show where extra spending stops adding cooling, before you compare current prices.
What each price tier buys
From $15 to $40, air coolers like the Assassin X120 Refined SE and Phantom Spirit 120 SE cover most CPUs. The Phantom Spirit’s seven heat pipes and two fans are the best capacity per dollar in our data. The Freezer 36 A-RGB adds lighting and a six-year warranty at the same price.
From $55 to $70, you can buy a 360mm AIO such as the Aqua Elite 360 V3 or 360L Core, or a feature-rich 240mm like the Liquid Freezer III Pro. Around $90, extras such as the Kraken’s screen take over. Beyond about $40, air coolers mainly add warranty and brand.
Matching the best CPU coolers for under 100 to your CPU
Intel lists the Core i7-14700K at 253W maximum turbo power and the Core Ultra 5 245K at 159W, while Wikipedia lists many Ryzen chips at 65W to 120W. A 65W chip runs fine on the Assassin X120 Refined SE. Mid-range chips suit the Phantom Spirit or Freezer 36.
For 200W-plus Intel chips under long loads, a 360mm AIO like the Aqua Elite 360 V3 gives the most margin within this budget. Choose based on sustained power, not the name on the box, and remember that a cooler one tier up lets fans run slower.
Case clearance and radiator mounts
Check your case’s cooler height limit and radiator mounts before choosing between air and liquid. The towers here run from 148mm to 159mm, and Noctua’s study of more than 100 cases found many published clearances were inaccurate, so leave a few millimeters of margin.
For AIOs, confirm a 240mm or 360mm mount and space for a 27mm radiator plus fans. A 360mm radiator usually needs a top or front mount in a mid-tower or larger case. If your case has only a 240mm position, the Liquid Freezer III Pro 240 or Kraken Plus 240 are the options here.
Noise, lighting and warranty
Slower fans and larger radiators or fin stacks tend to be quieter. The Phantom Spirit’s 1500rpm fans and the Aqua Elite 360’s 1500rpm fans favor low noise, while AIOs add pump noise that never fully stops. Brand noise figures are maximums and not directly comparable.
For lighting, ARCTIC notes 5V A-RGB and 12V RGB headers are not compatible. For warranty, the Freezer 36 A-RGB and NH-U12S redux list six years, the Aqua Elite three years, and the 360L Core listing two. Weigh warranty against price within each tier.
FAQ
These are the questions builders ask most when setting a $100 cooler budget. The answers use the specs and listing data cited above, not our own testing, which we have not done, and prices and ratings are November 2026 snapshots that will change, sometimes by enough to change a tier.
Is a $100 cooler better than a $40 cooler?
Not always. In our data, the $36 Phantom Spirit 120 SE has seven heat pipes and two fans, while pricier air coolers mostly add warranty, finish and mounting quality. Spending more pays off mainly when it buys a larger radiator for a hot CPU, such as the $55 Aqua Elite 360 V3, or a feature you want.
Should I buy air or liquid under $100?
Air for most CPUs, liquid for hot ones. A dual tower like the Phantom Spirit handles most gaming chips quietly with no pump. For chips with very high turbo power, such as the 253W Core i7-14700K, a 360mm AIO gives more margin within this budget, provided your case has the mount.
Do these coolers fit both Intel and AMD?
Yes for current sockets. Seven list AM5, AM4 and LGA 1700 in the sources we read, and the Kraken listing names AM5 and LGA 1851; most of the others list LGA 1851 too. The Freezer 36 A-RGB does not list LGA 115x, so it is not for older Intel boards like LGA 1151.
Conclusion
Under $100, buy the Thermalright Phantom Spirit 120 SE. At about $36 as of November 2026, its seven heat pipes and two fans cool most CPUs quietly and leave $60 of your budget unspent. Move up to the $55 Aqua Elite 360 V3 only for a high-power Intel chip in a case with a 360mm mount.
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