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Performance Tests

Cooling Efficiency

The test results of the coolers can be viewed in this table and in the chart below:

The two coolers seem to be identical in terms of performance. The Phanteks is a mere 1-2°C better than the Thermalright with two TY fans. So, we can’t say that one of them is better than another until we check them out in our noise and overclocking tests.

When using only one TY-150 fan, the Silver Arrow SB-E performs 2 to 4°C worse, depending on the speed. This is not much, yet we can’t say that the TY-141 is useless. It does help the larger TY-150 to cool the heatsink and lower the CPU temperature. Our attempt to install one more TY-140 to the exterior side of the second heatsink section didn’t help us to lower the peak temperature of our CPU, so we don’t include these results in the chart.

You can compare these coolers with those we tested previously in the following table and diagram. Each cooler was tested in its default configuration in the quiet mode and at the maximum speed of the fan(s) with the CPU overclocked to 4.375 MHz at a voltage of 1.385 volts.


* - The peak temperature of the hottest CPU core is posted on the diagram taking
into account the difference from the current ambient temperature and is reduced to 25°C.

As you can see, the new Thermalright Silver Arrow SB-E is somewhat better than the Phanteks in terms of the peak CPU temperature and noise level, yet the Phanteks is superior at 800 RPM.

Of course, super-coolers can only show their full potential with overclocked CPUs. The Thermalright Silver Arrow SB-E could make our CPU stable at 4500 MHz with a voltage of 1.410 volts. The peak temperature of the hottest CPU core was 74°C. And the Phanteks PH-TC14PE has the same result:


Thermalright Silver Arrow SB-E:
1270/1010 RPM

Phanteks PH-TC14PE:
2x1230 RPM

Then we tried to overclock the CPU to 4625 MHz at 1.455/1.465 volts, but the Thermalright Silver Arrow SB-E couldn’t keep the CPU stable. We had an error message on a second or third run of the Linpack test and couldn’t avoid it even by increasing the voltage, although the peak CPU temperature wasn’t higher than 80°C:

 

We guess this must be due to the cooler’s curved base which couldn’t ensure the uniform heat transfer required by Intel’s six-core CPUs. Our point is confirmed by the results of the Phanteks PH-TC14PE which made the CPU stable at 4625 MHz, 1.455 volts and 80°C.

Here are the table and chart with the maximum overclocking results:

The Silver Arrow SB-E is the unrivalled leader when it comes to overclocking the CPU to 4500 MHz at 1.405-1.415 volts. The closest pursuer NZXT Havik 120 is almost 6°C behind, which is a very large gap. It is a shame that Thermalright’s new cooler couldn’t conquer the higher CPU frequency.

 
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