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Cooler Master ML240P Mirage All-In-One Review

When looking at Cooler Master’s new MasterLiquid ML240P Mirage, we cannot help but feel a bit disappointed with its raw cooling performance. There is no getting away from the fact that it was beaten hands down by a cheaper alternative from the same manufacturer. This begs the question… why would anybody want to buy it?

Granted, the test rig we used is a very powerful heat generator and maybe on some lesser powered systems, the ML240P could perform admirably. If you stick to stock CPU frequency, the ML240P may be perfect for you. However, it would not be recommended to use on a heavily overclocked system – certainly not a 9900k anyway!

We should mention during initial testing we found abnormal results in performance. Under load in our overclocked test, the maximum temperature spikes would exceed the 100°C thermal limit of the Core i9 9900k and therefore would throttle CPU frequency up to 20%. We reached out to Cooler Master about this and they offered a replacement unit. The replacement unit did perform better and these are the results that were shown in our charts.

The MasterLiquid ML240P has so much going for it. With its attractive aesthetics and smart RGB functions, coupled with the copper cold plate and ultra quiet pump, there was a recipe there for something really pleasing, which was let down by the poor thermal transfer under load when trying to cool an overclocked CPU.

Currently, the market is flooded with RGB All-In-One liquid coolers and the Mirage isn’t bad – but when it is out-performed by one of Cooler Master’s own 240mm products, it becomes hard to recommend.

You can purchase the Cooler Master ML240P Mirage for £139.99 from Overclockers UK HERE.


  • Attractively designed pump assembly, with transparent top.
  • Addressable RGB LED lighting compatible with major motherboard vendors’ software.
  • Simple installation and clear instructions.


  • RGB controller module has many cables to manage.
  • Cooling performance under load is disappointing when our CPU is overclocked.
  • High price/performance ratio.

KitGuru says: Cooler Master did a great job at making the MasterLiquid ML240P Mirage look flashy with its RGB, but thermal performance is underwhelming.

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Rating: 7.5.

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