Best CPU Cooler for AMD Ryzen 7 9850X3D
The Ryzen 7 9850X3D is still a 120 W, 8-core Zen 5 chip with 96 MB of L3, AM5, and no cooler in the box. AMD’s sheet still says a liquid cooler is recommended for optimal performance. That is not a 360 mm LCD shopping list. It is the same TDP class as the 9800X3D, with a higher bin: 4.7 GHz base, up to 5.6 GHz boost, boxed ID 100-100001973WOF, launched 29 January 2026.
The pairing difference is heat, not a different cooler category. Gamers Nexus ran both chips on the same 360 mm Arctic Liquid Freezer II ARGB: the 9850X3D held about 83 °C all-core Tdie versus 74–75 °C on the 9800X3D (7–9 °C warmer) and pulled 164 W down the EPS12V cables versus 143 W. Gaming is at best about 3–4% faster, often a tie. Dual-tower air is still the job. The 2026 default is the Thermalright Phantom Spirit 120 EVO — seven heat pipes, 157 mm, AM5 in the box — because this is the chip GN told people not to put on a borderline cooler.
Our Top Picks at a Glance
Updated August 2026 · Matched to Ryzen 7 9850X3D 120 W TDP / ~164 W EPS all-core, not a 250 W Intel list
7×6 mm heat pipes, 157 mm, AM5. The dual-tower default for the hotter 120 W X3D.
Check Price at Amazon Read full review ↓Six heat pipes, quieter 1550 RPM fans. Buy it when it is clearly cheaper than the EVO.
Check Price at Amazon Read full review ↓Single 120 mm tower. Gaming still fits; skip it for PBO / all-core on this hotter bin.
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 9850X3D 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 / short case, games only | Single-tower air | 148 mm | 4×6 mm · skip PBO | $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 9850X3D 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 — still a dual tower. Do not “save” by dropping to a four-pipe tower and then running PBO.
How We Picked These Coolers
- AMD’s 9850X3D sheet: 8 cores / 16 threads, Zen 5, 4.7 GHz base / up to 5.6 GHz boost, 96 MB L3 + 8 MB L2, 120 W default TDP, 95 °C Tjmax, AM5, Precision Boost Overdrive on, no cooler in the box, “liquid cooler recommended for optimal performance,” boxed 100-100001973WOF. Socket PPT for a 120 W part is still the usual ~1.35× ceiling (~162 W) if PBO is allowed to spend it. Same TDP class as the 9800X3D. Not a 170–200 W 16-core X3D, and not the 7800X3D’s cooler-limited stack.
- What the hotter bin actually draws: Gamers Nexus (same 360 mm Arctic Liquid Freezer II ARGB, controlled ambient) measured ~83 °C steady-state all-core Tdie on the 9850X3D versus 74–75 °C on the 9800X3D — 7–9 °C warmer — and 164 W EPS12V versus 143 W (~20 W more from higher voltage to hold the extra clocks). Gaming was 0–4% at best, often a tie. GN’s cooler note: if buying the 9850X3D rather than the 9800X3D, factor in a slightly more expensive or higher-end cooler if a borderline solution was under consideration. Tom’s Hardware’s faceoff is the same story in games: a few percent more fps for a much larger power bump. That is why this page keeps dual-tower air as the default and tightens the skip on a four-pipe single tower — not why it jumps to a 360 mm LCD AIO.
- 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 / 69 CFM, 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 a 120 W part. Seat it on AM5 with the included backplate; do not add an Intel contact frame. The old version of this page led with a 360 mm Arctic AIO and a Pure Rock 3 as a hero. Those are the wrong rungs for stock 9850X3D gaming.
Best CPU Cooler for AMD Ryzen 7 9850X3D: 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 9850X3D. Same 120 W sticker as the 9800X3D, plus GN’s extra ~20 W EPS and 7–9 °C all-core. Seven heat pipes and two 120 mm fans cover 120 W TDP and the ~162 W PPT ceiling without a pump — and they are the step up from a six-pipe or four-pipe kit that GN’s “borderline cooler” warning is actually about. The EVO is the current Phantom Spirit: denser TL-K12 fans than the older SE, same 157 mm envelope that fits most ATX mid-towers listed at 160 mm+ CPU height. AM5 mounting is included. 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 fights this cooler. This replaces the old Overall on this page (Arctic Liquid Freezer III Pro 360) for stock and gaming loads. A 360 mm AIO is still Layer 2.
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 — still dual tower. Do not skip downward to a single tower “because TDP is 120 W.”
- 7-pipe dual tower sized for 120 W plus the 9850X3D’s extra all-core heat
- 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 9850X3D. Still a dual tower, which is the floor this chip wants. 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 gaming load that is a noise win. On GN’s all-core 164 W EPS figure, the missing pipe is why the EVO is Overall and this is Value — not why this page would drop to a single tower. 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, which is the pairing this CPU actually asked for. Skip the Mini / 120 mm single-tower siblings if the case already has 160 mm; that is the Budget card’s job, and even that card has a harder skip for PBO on this chip.
- Usually the cheapest dual tower that still matches the 9850X3D target
- Quieter stock fan curve than the EVO
- AM5 included, 155 mm
- One fewer heat pipe than the Phantom Spirit EVO on a chip that already runs hotter than a 9800X3D
- 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 still has a slot. Game loads on this CPU are still in the dual-digit to ~100 W class, not a 16-core PPT. A four-pipe 120 mm tower can hold gaming. 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 Pure Rock 3 hero, and it is not a 240 mm AIO. A 120 mm AIO on this TDP is still 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. Treat that skip as stronger than on a 9800X3D: GN measured 7–9 °C more all-core heat on the same 360 mm AIO and called out borderline coolers specifically for this SKU. Also skip it as the only cooler on a 9850X3D that lives in Cinebench / PBO / a hot ITX box with a fat GPU.
- Covers 9850X3D 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 — the borderline all-core/PBO cooler on this hotter bin
- 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. Neither is the default for a 120 W 9850X3D.
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 (the Pro 360), and it is still the right AIO if the case already takes a 38 mm-thick 360 mm radiator. GN’s 164 W EPS / 83 °C all-core numbers were taken on Arctic’s previous 360 mm Liquid Freezer II — liquid works; it is not required for stock games. Arctic’s AM5 kit offsets the cold plate 5 mm toward the CCD, 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 9850X3D 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. Skip using the AIO to justify a four-pipe air cooler as the other option; pick one lane.
Frequently Asked Questions
AMD lists a liquid cooler as recommended. Is a 360 mm AIO required?
No. The boxed 9850X3D ships with no cooler, and AMD’s language is “liquid recommended for optimal performance.” The TDP is still 120 W. GN’s extra heat versus a 9800X3D was measured on a 360 mm AIO (83 °C vs 74–75 °C all-core). That argues for a real dual tower instead of a borderline single tower, not for a 360 mm LCD kit as the default. Use a 360 mm AIO when the case is already built for it, for PBO headroom, or for the look.
Is this chip hotter than a 9800X3D enough to change the cooler class?
It is hotter. It is not a different class. GN: ~20 W more EPS12V (164 W vs 143 W) and 7–9 °C more all-core on the same 360 mm cooler, from higher voltage to hold the 5.6 GHz bin. Gaming remains 0–4% at best. Stay in dual-tower air. Do not copy a 9800X3D “four-pipe is fine for Cinebench too” habit, and do not copy a 9950X3D2 “360 mm is the floor” habit.
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.
Does PBO or Curve Optimizer change the cooler choice?
Only if those settings are actually used. 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 on this already-hotter bin is when the 360 mm Arctic (or the EVO with fans allowed to spin) earns its keep — and when the Assassin X should be off the list. Gaming fps barely moves either way; GN’s stock 9850X3D vs 9800X3D gaming gap was already small.
Final Verdict
For most Ryzen 7 9850X3D builds, buy the Phantom Spirit 120 EVO, confirm ~160 mm case height, and use a 33 mm RAM kit. The extra heat versus a 9800X3D (~20 W EPS, 7–9 °C all-core per GN) is why the default is the seven-pipe tower, not why a 360 mm LCD AIO is required. 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, games only? Assassin X 120 Refined SE — skip it for all-core PBO. Quiet-at-any-price air and a 360 mm AIO are different jobs. Do not default to a 360 mm LCD kit because AMD printed the word liquid.