Comparison of the tests of the best watercooling kits

We took the 5 best watercooling kits among the top watercooling, based on user ratings on Amazon US, UK, FR, DE. And we averaged 50 random reviews with results in terms of temperature at idle, in game and stress test (max).

Here are the results:

KitIdle (°C)Game (°C)Stress Test (°C)
Lepa AquaChanger 120274555
Thermaltake WATER 3.0284555
Enermax Liqmax II 120S304258
Arctic Liquid Freezer 240284358
Corsair Hydro Series H75294362

The best performance is attributed to the Lepa AquaChanger 120.

Unfortunately, in fact, some watercooling kits have serious defects. These include pump’s failure, but also leakage of the coolant. In general, the leakage of the liquid occurs when the pump no longer works; The overclocked processor will then reach temperatures above 100 ° C for several hours, melting the connection with the tubes.

Leaking, the liquid pours on the graphics card, that simply burns. Worse: on the graphics card, on the motherboard, all the hardware burns, including the processor (rarer case).

The Corsair Hydro Series H75 actually includes several models in the reviews (Corsair has decided to merge reviews to better convince potential buyers of the popularity of their product). There are therefore opinions concerning models H60, H75, H80i, H100i, H110, H115i. It is no surprise in the Corsair Hydro Series that there is the biggest number of serious cases. On 500 of the last reviews, there are 6 serious cases where the graphics card (even the whole PC burns), 13 reviews where the pump is quickly failing (less than a few months).

For the Lepa AquaChanger 120, four serious cases, 8 failure warnings.

For the Enermax Liqmax II 120S, two serious cases, one failure warning.

For the Arctic Liquid Freezer 240, one serious case, two failure warnings

For the Thermaltake WATER 3.0, only one case, and one quick failure warning.

Thus, the Lepa AquaChanger 120 and the Corsair Hydro Series have to be avoided. Even though the Lepa AquaChanger 120 is overall excellent in cooling. Enermax Liqmax II 120S is acceptable. The Arctic Liquid Freezer 240 is okay. The Thermaltake WATER 3.0 with the little accident and very good temperature finally becomes the true leader of this top.

But the risk persists. The watercooling kits seem less safe than the old kits that had an external pump a decade ago but which was much noisier and bulky. And nowadays, the ventirads have gained enormously in quality. Thus, with a watercooling kit, we have a gain of only 5 ° C compared to a high-end ventirad. And the kit starts silently, degrades after a few months to become increasingly noisy, not to mention the pump that can gurgle if air bubbles seeps into the coolant. This is not the case with a ventirad.