Now we up the ante. Understand that 1.3V and higher Voltages are the levels where Ivy Bridge processors get into serious problems due to the aforementioned heat-spreader versus TIM design applied solution from Intel. We now set the Core i7 3770K @ 4600 MHz and apply 1.30 volts on the CPU while loading it with 100% stress for a full Prime95 run on all available CPU threads.
Core i7 3770K OC at 4600 MHz 1.3 Volts - IDLE
Below you can see the IDLE results with the Core i7 clocked at 3770K @ 4600 GHz with 1.30 volts on the CPU. Again, the results are the IDLE temperatures thus you are in your desktop doing nothing.
Core i7 3770K OC at 4600 MHz 1.3 Volts LOAD
Now we'll be testing the temperatures under stress. If we set the overclock at 4600 MHz and configure CPU Voltage at 1.3V, these are the results.
The temps rise above and beyond 90 Degrees C for a handful of coolers, which is a definitive no-no. As you can see we have dangerous temperatures for most coolers. Enthusiast class coolers do better here, with the Noctua NH-D14, NZXT Kraken series and Corsair H100i, H110 it remains possible to run fairly high voltages.
The H110 takes second position, the NZXT Kraken X60 leads but is a far more noisy product. The H90 is having a much harder time, it really needs more radiator surface area to be able to deal with Ivy Bridge.
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