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Guru3D.com » Review » Be Quiet! Dark Rock TF review » Page 8

Be Quiet! Dark Rock TF review - Core i7 4790K OC at 4600 MHz 1.3 Volts

by Hilbert Hagedoorn on: 05/26/2015 01:04 PM [ 4] 2 comment(s)

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Now we up the ante. Understand that 1.3V and higher voltages are the levels where Haswell processors get into serious problems due to the aforementioned heat-spreader versus TIM design applied solution from Intel. We now set the Core i7 4790K @ 4600 MHz and apply 1.30 volts on the CPU while loading it with 100% stress for wPrime to run on all available CPU threads at least two times.

Core i7 4790K OC at 4600 MHz 1.3 Volts - IDLE 

Below, you can see the IDLE results with the Core i7 clocked at 4790K @ 4600 GHz with 1.30 volts on the CPU. Again, the results are the IDLE temperatures thus you are on your desktop doing pretty much nothing. 

 

Core i7 4790K OC at 4600 MHz 1.3 Volts LOAD

Now we'll be testing the temperatures under fully threaded stress. If we set the overclock at 4600 MHz and configure CPU Voltage at 1.3V, these are the results.  


The temps normally rise above and beyond 90 Degrees C for a lot of heat pipe based coolers, which is a definite no-no. As you can see, we have high temperatures for most coolers. Very few coolers and kits can actually manage a Core i7 4970K @ 1.3+ Volts / 4600+ MHz temperature wise well enough.
 


But yeah, 72 Degrees C is pretty freakin nice considering the fact that we jam 1.3V into the high-end Haswell CPU. But is it silent?




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