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Will a 12cm cpu cooler fit a 18.3cm case?

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Dani AI

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Short answer: very unlikely. The Cooler Master Hyper‑212 family lists an overall height of about 159 mm, while the CiT Templar micro‑ATX case that posted has an external width of 180 mm. External width is not the same as usable CPU‑heatsink clearance (panel thickness, motherboard tray and standoffs eat several millimetres), so a 159 mm tower cooler will be extremely tight or will prevent the side panel from closing comfortably. (coolermaster-usa.com)

How to check the fit (practical, repeatable method):

  1. Remove the right side panel and fit the motherboard to the standoffs.
  2. Measure from the top of the CPU heatspreader (or the CPU socket area if the CPU is not installed) straight to the inner face of the side panel where the cooler would sit.
  3. Compare that clearance to the cooler’s listed overall height. Leave at least 3–5 mm extra for paint, cables or a slight bulge in the panel. If the measured clearance is less than the cooler height, the cooler will not fit. Community build threads show this simple measurement avoids surprises. (forums.tomshardware.com)

If the Hyper‑212 doesn’t fit: options that work in narrow micro cases

  • Choose a low‑profile SFF cooler (examples: Noctua NH‑L9a at 37 mm total height) when the CPU TDP and your workload allow. (noctua.at)
  • Consider a slim 120 mm AIO only if the case has an appropriate mount point for a radiator (check the case fan/radiator mounting).
  • Move to a larger high‑airflow mid/full tower (the Cooler Master HAF family explicitly supports much taller tower coolers; some HAF models list support up to 180 mm). That matches ’s suggestion to use a bigger case for better cooling and headroom. (coolermaster-usa.com)

Takeaway: don’t rely on external case width alone—measure inside clearance as described, then compare to the cooler’s spec sheet. If internal clearance < 159 mm, pick a low‑profile cooler or upgrade the case rather than forcing a fit.

Recommended Answers

All 6 Replies

Member Avatar for Rik_

Perhaps if you told us what case it is and tell us where abouts you want to fit the fan...

Member Avatar for ronald577

Can you please mention the case and cpu cooler so that I would get a better idea.

Member Avatar for caperjack

it might/should fit,most case are a standard width ,but if you are looking for ultimate cooling i would suggest a bigger case, as the link is showing a micro-atx case ,not much space in them for moving air for effincent cooling

Member Avatar for aVar++

Yes, I know:( I didn't realise when I built the rig that the case would be a problem as it was my first build... Was a very bad decision to go for a cheap case, However I might invest in a haf series case which are meant for high air flow, But it means taking apart and rebuilding the rig facepalm.

Thank you for your inputs though.

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