For performance testing we used the same i7-870 rig as before, but this time we clocked the CPU up
to 3,8 GHz using Vcore of 1,25 V (1,287 V measured under load). At these settings the system draws
about 70 W from the grid when idling and 277 W when under full CPU load. For reference thermal paste
we used the Phanteks PH-NDC thermal compound and to see how the fans affect the performance of the
coolers we also used the Corsair fans on all the other coolers.
All of the coolers on the chart can be considered to be high performance models, so also the
differences in temperatures are small. The Corsair Hydro H100 takes the first position with load
temperature of 68 C, followed closely by the Antec 920 and Phanteks PH-TC14PE, both equipped with the
Corsair fans. With the Corsair controller at low speed the temperature goes up by 5,75 C, but is still
lower than that of the Noctua NH-D14 (stock fans) or the Kühler 620 with just a single fan.
While the competition here is very close, it's worth remembering that unlike other watercoolers
here, the Hydro H100 can be loaded with four fans in push-pull configuration. To test this we used the
corsair stock fans on one half of the radiator and the Antec 920 stock fans on the other half. This
improved the temperature by another 1,25 degrees, but at this stage the fan noise was getting
unbearable.
Noise
As you can guess by looking at the temperature graphs and specifications, the Hydro H100 comes with
a pair of very powerful fans, and at full speed they also are LOUD. It isn't quite as noisy as the
Thermaltake Frio OCK that still holds the noisiest cooler-award, but atleast for me the noise is just
too much. The fan controller on the pump of course helps with the noise and the low- and mid- settings
hit a nice balance between cooling performance and noise.
Conclusion
PROS
Low profile block
Fan controller
Solid performance
CONS
No remote control for the fans
No fan speed monitoring
Silver Award!
The Hydro H100 is a leap for the closed loop water coolers as it brings a larger 240 mm sized
radiator to the mix. This is a logical step to take seeing how popular 240 mm mounting points are in
modern cases, and also helps improve the performance of the cooler. In the performance testing the
H100 did top the charts, but the difference to the competitors wasn't quite as large as we'd
expected.
The two problems that I see with the Hydro H100 are both related to the fans, first of all to
control the fans one needs to open the case and press the button on top of the pump, and secondly it's
impossible to monitor the fan speeds. The Corsair Link-system should solve these problems, but it's
also going to make the already rather high price tag go even higher.
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