Best CPU Cooler for AMD Ryzen 7 9800X3D
The Ryzen 7 9800X3D is a 120 W, 8-core Zen 5 chip with 96 MB of L3, and the boxed CPU does not include a cooler. AMD’s spec sheet still says a liquid cooler is recommended for optimal performance. That is not the same as “buy a 360 mm LCD AIO.” Second-gen 3D V-Cache sits under the cores, not on top of them: AMD quotes 46% less thermal resistance than the 7800X3D stack, which is why this chip boosts higher — and why it also draws more power. TechSpot measured about 93 W in Cyberpunk 2077 and 128 W on the EPS12V rails in Cinebench, 54% more than a 7800X3D.
Gaming on this CPU is a dual-tower air-cooler job. The 2026 default is the Thermalright Phantom Spirit 120 EVO: seven heat pipes, 157 mm, AM5 in the box, and it does not add a pump, a 38 mm radiator, or an RGB screen on top of a 120 W gaming chip.
Our Top Picks at a Glance
Updated August 2026 · Matched to Ryzen 7 9800X3D 120 W / ~162 W PPT, not a 250 W Intel list
7×6 mm heat pipes, 157 mm, AM5. The dual-tower default for this CPU.
Check Price at Amazon Read full review ↓Six heat pipes, quieter 1550 RPM fans, usually cheaper. Same job as the EVO.
Check Price at Amazon Read full review ↓Single 120 mm tower, 148 mm, four heat pipes. Enough for 93 W gaming, not for chasing PBO.
Check Price at Amazon Read full review ↓Disclosure: This page contains affiliate links. As an Amazon Associate affiliate, we earn a small commission from qualifying purchases at no extra cost to you.
Comparison Table
| Product | Best for | Type | Height / rad | Heat pipes / notes | Price | Buy |
|---|---|---|---|---|---|---|
| Phantom Spirit 120 EVO | Default 9800X3D cooler | Dual-tower air | 157 mm | 7×6 mm · AM5 | $40–$55 | Check |
| Peerless Assassin 120 SE | Cheaper dual tower | Dual-tower air | 155 mm | 6×6 mm · 1550 RPM fans | $33–$45 | Check |
| Assassin X 120 Refined SE | Budget / SFF-ish | Single-tower air | 148 mm | 4×6 mm · one 120 mm fan | $15–$25 | Check |
| NH-D15 G2 chromax.black | Quiet air | Dual-tower air | 168 mm | Premium fans · 6-year warranty | $130–$160 | Check |
| Liquid Freezer III 360 | AIO / PBO | 360 mm AIO | 38 mm thick rad | AM5 5 mm offset · VRM fan | $85–$120 | Check |
| 360 mm LCD AIO | Skip as default | AIO + screen | 360 mm | Pays for RGB, not 9800X3D fps | $150–$300 | — |
| 120 mm AIO | Skip | AIO | 120 mm | Worse than a $20 single tower on this TDP | $50–$90 | — |
Street prices move. Thermalright dual towers have sat in the $35–$55 band for years; a 360 mm LCD kit has not. If the EVO is priced like a Noctua, buy the Peerless Assassin 120 SE.
How We Picked These Coolers
- AMD’s 9800X3D sheet: 120 W default TDP, 95 °C Tjmax, AM5, Precision Boost Overdrive on, no cooler in the box, “liquid cooler recommended for optimal performance.” Socket PPT for a 120 W part is the usual 1.35× ceiling (~162 W) if PBO is allowed to spend it. That is the heat budget. It is not a 250 W Intel chip, and it is not the 7800X3D’s ~80–90 W gaming envelope either.
- What the chip actually draws: TechSpot’s 9800X3D review (MSI MAG Coreliquid I360) saw ~118 W package / 79 °C CCD / 56 °C L3 in Cinebench 2024, 128 W on the EPS12V rails (54% more than a 7800X3D), and 93 W in Cyberpunk 2077. AMD’s inverted 3D V-Cache is quoted as 46% less thermal resistance versus the old “cache on top” stack — cores on top of the IHS, cache underneath. PBO in that review added about 2.5% Cinebench for 20% more power. The cooler has to cover 120 W all-core and ~90–100 W gaming, not a 360 mm marketing sticker.
- The boxes on this page: Phantom Spirit 120 EVO — 110×125×157 mm, 7×6 mm heat pipes, two TL-K12 PWM fans to 2150 RPM / 27 dBA, AM4/AM5. Peerless Assassin 120 SE — 155 mm, 6×6 mm pipes, TL-C12C to 1550 RPM / 25.6 dBA. Assassin X 120 Refined SE — 148 mm, 4×6 mm pipes, one 120 mm fan. Dual-tower 6–7 pipe air is the class Tom’s Hardware and Hardware Unboxed treat as 240 mm AIO-equivalent on this TDP. Seat it on AM5 with the included backplate; do not add an Intel contact frame.
Best CPU Cooler for AMD Ryzen 7 9800X3D: Detailed Reviews
Thermalright Phantom Spirit 120 EVO View on Amazon
| Type | Dual-tower air |
|---|---|
| Size | 110 × 125 × 157 mm (heatsink) |
| Heat pipes | 7 × 6 mm, nickel-plated C1100 base |
| Fans | 2× 120 mm TL-K12 PWM, up to 2150 RPM / 27 dBA / 69 CFM |
| Sockets | AM5 / AM4 (and Intel 1700/1851) in the box |
Why it fits the 9800X3D. Seven heat pipes and two 120 mm fans are how you cover 120 W TDP and the ~162 W PPT ceiling without a pump. The EVO is the current Phantom Spirit: denser fans (TL-K12) than the older SE, same 157 mm envelope that fits most ATX mid-towers listed at 160 mm+ CPU height. AM5 mounting is included — no extra kit. The front fan can be raised on the clips if RAM is taller than a 33 mm Flare X5 / ~35 mm Vengeance kit; a 44 mm Trident Z5 Neo RGB is the kit that actually fights this cooler. This replaces the old Overall idea on this page (a 360 mm Arctic AIO) for stock and gaming loads. TechSpot’s 93 W Cyberpunk figure is not a liquid-cooling problem.
Skip this if the case is under ~160 mm of CPU clearance, or the build is supposed to look like an AIO. Then the Arctic 360 or a different case. If the EVO is sold out or priced like a Noctua, the Peerless Assassin 120 SE is the same class.
- 7-pipe dual tower sized for 120 W / PBO, not for a 360 mm tax
- AM5 hardware in the box, 157 mm fits typical mid-towers
- Front fan can slide for RAM clearance
- 2150 RPM stock fans are louder at the top than the Peerless Assassin’s 1550 RPM pair
- Tall RGB DIMMs still want the fan raised or a 33 mm kit
Thermalright Peerless Assassin 120 SE View on Amazon
| Type | Dual-tower air |
|---|---|
| Size | 125 × 110 × 155 mm |
| Heat pipes | 6 × 6 mm, C1100 nickel-plated base |
| Fans | 2× TL-C12C PWM, 1550 RPM / 25.6 dBA / 66.17 CFM |
| Sockets | AM5 / AM4 in the box |
Why it fits the 9800X3D. This is the dual-tower kit the last two years of AM5 builds actually used. Six heat pipes instead of the EVO’s seven, and the stock TL-C12C fans top out at 1550 RPM / 25.6 dBA instead of 2150 / 27. On a 120 W chip that is a noise win more than a thermal loss. 155 mm vs 157 mm is the same case check. Do not grab Peerless Assassin 120 Vision / RGB unless lights are the reason — the SE is the Value SKU. Same RAM rule as the EVO: 33 mm kits clear; 44 mm RGB may need the front fan shifted.
Skip this if the EVO is the same price — then buy the seven-pipe cooler. Skip the Mini / 120 mm single-tower siblings if the case already has 160 mm; that is the Budget card’s job, not this one.
- Usually the cheapest dual tower that still matches the 9800X3D target
- Quieter stock fan curve than the EVO
- AM5 included, 155 mm
- One fewer heat pipe than the Phantom Spirit EVO
- Amazon mixes SE, Mini, and Vision listings — confirm dual tower, two fans, non-LCD
Thermalright Assassin X 120 Refined SE View on Amazon
| Type | Single-tower air |
|---|---|
| Size | 120 × 46 × 148 mm |
| Heat pipes | 4 × 6 mm |
| Fans | 1× 120 mm TL-C12C, 1550 RPM / 25.6 dBA |
| Sockets | AM5 / AM4 |
Why it fits the 9800X3D. Budget here still has to cool ~93 W in games. A four-pipe 120 mm tower does that. It will not match a dual tower in Cinebench or with PBO spending the 162 W PPT, and it will spool the single fan harder. 148 mm and a 46 mm-deep tower also solve RAM clearance that dual towers create, and they fit cases that list 155 mm CPU height. Prefer the black non-RGB SE if it is in stock; ARGB is a different SKU, same cooler. This is not the old page’s “cheap 240 AIO.” A 120 mm AIO on this TDP is the skip.
Skip this if the case already clears 160 mm and the extra $20 for a Peerless Assassin is available — buy the dual tower. Also skip it as the only cooler on a 9800X3D that lives in Cinebench / PBO / a hot ITX box with a fat GPU.
- Covers 9800X3D gaming wattage without a dual-tower or a pump
- 148 mm and no front-fan-over-RAM problem
- Usually $15–$25
- Four pipes / one fan — less Cinebench and PBO headroom than the Top 2
- ARGB and non-RGB listings get mixed on Amazon
If You Need Something Else
These two are not cheaper versions of the Top 3. One buys silence and a six-year warranty. The other is the AIO to use when the case is already a 360 mm box, or PBO is actually on.
Arctic Liquid Freezer III 360 View on Amazon
| Type | 360 mm AIO |
|---|---|
| Radiator | 398 × 120 × 38 mm |
| Fans | 3× P12 PWM, 200–1800 RPM |
| AMD mount | 5 mm offset cold plate for the chiplet hotspot |
| Extra | 60 mm VRM fan · MX-6 paste · 6-year warranty |
This was the spirit of the old Overall pick, and it is still the right AIO if the case already takes a 38 mm-thick 360 mm radiator. Arctic’s AM5 kit offsets the cold plate 5 mm toward the CCD, which is the actual AM5 hotspot, and the pump block has a PWM VRM fan that a dual-tower already provides with its rear fan. Cables are sleeved into the tubes. The Intel contact frame in the box is for LGA1700/1851 — leave it in the bag on AM5. Liquid Freezer III Pro 360 is the same idea with newer P12 Pro fans; buy Pro if the delta is small, III if it is not. A 360 mm LCD Kraken or Galahad is a screen, not more 9800X3D performance.
Skip this if the PC is stock gaming in a case without a clean 360 mm top or front mount. That is the Phantom Spirit. Also skip 240 mm “because AMD said liquid” — a $40 dual tower is the better 240 mm substitute on this TDP.
Frequently Asked Questions
AMD lists a liquid cooler as recommended. Is a 360 mm AIO required?
No. The boxed 9800X3D ships with no cooler, and AMD’s language is “liquid recommended for optimal performance.” TechSpot still saw 79 °C CCD at ~118 W package on a 360 AIO in Cinebench, and ~93 W in Cyberpunk. A 6–7 pipe dual tower is the practical default. Use a 360 mm AIO when the case is already built for it, for PBO headroom, or for the look — not because the spec sheet used the word liquid.
Is an AM5 contact frame needed?
No. Intel LGA1700/1851 contact frames exist because that ILM bends the IHS. AM5 is a different socket. Arctic includes an Intel frame with the Liquid Freezer III; it stays unused on Ryzen. Do not buy a third-party AM5 “contact frame” as a cooler upgrade.
Will a dual-tower hit the RAM?
It can. Front 120 mm fans sit over DIMM A2. A 33 mm kit (G.Skill Flare X5 class) is the easy pairing. A ~44 mm RGB kit (Trident Z5 Neo) often needs the front fan raised on the clips, or the inner fan omitted. Check the case’s CPU height too: 157 mm for the Thermalright dual towers, 168 mm for the NH-D15 G2, 148 mm for the Assassin X.
The 7800X3D ran cool. Can this chip use a tiny cooler?
Not the same chip. The 7800X3D put cache on top of the CCD and was power-limited in practice. The 9800X3D flipped that stack, boosts higher, and TechSpot measured 54% more Cinebench EPS power than the 7800X3D. A 92 mm or stock-style cooler is the wrong 7800X3D habit. Dual tower is the floor for a 120 W part that is allowed to use PBO.
Does PBO or Curve Optimizer change the cooler choice?
Only if those settings are actually used. TechSpot’s PBO pass (+200 MHz, scalar 10×, CO −20) added about 2.5% Cinebench for ~20% more power. A negative Curve Optimizer without raising limits is the efficiency path and makes any of the Top 3 quieter. Spending PPT up to ~162 W is when the 360 mm Arctic (or the EVO with fans allowed to spin) earns its keep. Gaming fps barely moves.
Final Verdict
For most Ryzen 7 9800X3D builds, buy the Phantom Spirit 120 EVO, confirm ~160 mm case height, and use a 33 mm RAM kit. If the EVO is the expensive listing that week, the Peerless Assassin 120 SE is the value dual tower. Tight budget or a short case? Assassin X 120 Refined SE. Quiet-at-any-price air and a 360 mm AIO are different jobs — jump those from the list above. Do not default to a 360 mm LCD kit because AMD printed the word liquid.
Before buying on sale. Coolers are good October value, but only if the socket bracket and height clearance check out. Our Prime Big Deal Days 2026 guide lists the compatibility checks worth settling before October 6.