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Thermalright Assassin X 120 Refined SE

Physical Product · CPU coolers, fans & thermal paste · 14 mentions · 1 subreddit · discussed in r/buildapc

Reddit take

AI summary of the Reddit excerpts below — not a quote

The Thermalright Assassin X 120 Refined SE is a highly-regarded budget air cooler frequently recommended as a cost-effective upgrade over stock cooling solutions. It is praised for its value, particularly for mid-range CPUs, though users express some uncertainty regarding its performance with high-end, high-heat processors.

Pros

  • Excellent price-to-performance ratio, often cited around $18
  • Significant improvement over stock coolers
  • Sufficient cooling for mid-range chips like the Ryzen 5 5600G or 9600X
  • Available in non-RGB versions for clean, budget builds

Cons

  • Can struggle with high-end CPUs; one user reported the 7800X3D running 9 degrees hotter than a 9700X using this cooler
  • Limited headroom for high-performance CPU upgrades

Caveats

  • Users are divided on whether this single-tower cooler is adequate for newer, high-end Ryzen 7 bundles
  • Performance is highly dependent on the TDP of the specific processor used

Best for

  • Budget-conscious PC builders
  • Mid-range gaming builds (Ryzen 5 / Core i5)
  • Replacing loud or inefficient stock fans

Avoid if

  • Using high-TDP or top-tier gaming CPUs like the Ryzen 7 7800X3D
  • Planning for significant overclocking
  • Seeking a cooler for high-end Ryzen 7 or Ryzen 9 processors

This summary uses balanced time weighting with about a 6-month half-life. The evidence is older (median age 205 days) and primarily sourced from r/buildapc; while air cooler technology is stable, users should verify compatibility with the latest CPU releases.

Sentiment

11 positive (79%) · 2 mixed (14%) · 1 negative (7%)

Trust + time weighted score: +69% · raw score 71%

What redditors said (10 of 14)

Thermalright Assassin X 120 Refined SE 66.17 CFM CPU Cooler|$17.89||
positive · u/l****d · r/buildapc · Feb 5, 2026 · open on Reddit ↗
It'll be fine for my current build (5600g), but I'm planning on going back to Micro Center and picking up one of their bundles soon and was wondering if such a cooler would be able to properly cool one of the newer Ryzen 7s.
mixed · u/2****e · r/buildapc · Feb 18, 2026 · open on Reddit ↗
If you end up going with a bit more beefy CPU, Thermalright is a good choice as they have someawesome budget coolers these days.
positive · u/S****0 · r/buildapc · comment · Feb 17, 2026 · open on Reddit ↗
Got a cheap CPU cooler with no RGB
positive · u/g****r · r/buildapc · comment · Mar 13, 2026 · open on Reddit ↗
Using the same cooler, on average the 7800x3d is 9 degrees hotter than a 9700x during gaming
negative · u/V****y · r/buildapc · comment · Mar 9, 2026 · open on Reddit ↗
Something like a $40 Thermalright Assassin X 120 Refined SE will do just fine.
positive · u/B****B · r/buildapc · comment · Feb 21, 2026 · open on Reddit ↗
Thermalright Assassin X 120 Refined SE - A decent upgrade over the stock cooler for $18.
positive · u/B****B · r/buildapc · comment · Feb 16, 2026 · open on Reddit ↗
Thermalright Assassin X 120 Refined SE 66.17 CFM CPU Cooler
positive · u/g****r · r/buildapc · comment · Feb 14, 2026 · open on Reddit ↗
Thermalright Assassin X 120 Refined SE 66.17 CFM CPU Cooler
positive · u/C****a · r/buildapc · comment · Feb 4, 2026 · open on Reddit ↗
Thermalright Assassin X 120 Refined SE 66.17 CFM CPU Cooler
positive · u/i****g · r/buildapc · comment · Feb 18, 2026 · open on Reddit ↗

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