Stock Clock Testing
For our stock clock testing, we have configured our CPU to run at factory settings for speed, voltage. This yields an approximate power at the wall of 185w under load (a 127w differential from idle, which pulls about 58w). This results in the CPU running at 3.7GHz on all cores during the looping rounds of Cinebench R20.
Max Fan
We started our testing today by turning the fans up all the way to 11. This brought the be quiet! Dark Pro 4 to 57 degrees Celsius. This is trailing both the Iceberg Thermal IceSLEET X7 Dual (55.75 degrees Celsius) and the Cooler Master Hyper 212 EVO (55.5 degrees Celsius). We noted that the max fan speed on the Cooler Master Hyper 212 EVO topped out at 2050 RPM and the Iceberg Thermal IceSLEET X7 Dual topped out at 1600 RPM. The be quiet! Dark Rock Pro 4 has lowest max fan rpm at 1500 RPM (which explains the results in this test).
1500 RPM Fan
Dropping the fans slightly to 1,500 RPM brought our coolers almost dead even with one another. The Cooler Master Hyper 212 EVO came in at 56.88 degrees Celsius while the real kicker was the Iceberg Thermal IceSLEET X7 Dual barely edged it out at 56.5 degrees Celsius. The be quiet! Dark Rock Pro 4 does not see a change relative to the Max Fan RPM test (unsurprisingly) and comes in at 57 degrees Celsius again.
1000 RPM Fan
Lowering the fans RPM further to 1,000 RPM sees the be Quiet! Dark Rock Pro 4 barely edged everyone out at 60 degrees Celsius. The IceSLEET X7 Dual and the Cooler Master Hyper 212 EVO stay fairly close to the Dark Pro 4, though, at 60.88 degrees Celsius and 60.75 degrees Celsius respectively.
600 RPM Fan
Finally, down at 600 RPM, thebe quiet! Dark Rock is running away with things at 65.5 degrees Celsius. This is followed by the Iceberg Thermal IceSLEET X7 Dual at 66.63 degrees Celsius. The Cooler Master Hyper 212 EVO is way behind at 71 degrees Celsius.
Let’s move on now to look at some overclocking results with our coolers.