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.
One thing to note is that the Sickleflow fans used by the MasterAir MA624 registered a minimum of 750RPM and a maximum of 1450RPM on our test rig. Therefore, the 100% Fan and 1500 RPM fan speed tests are operating at 1450 RPM and the 600 RPM fan speed test is operating at 750RPM.
Max Fan
We started our testing today by turning the fans up all the way to 11, the MasterAir MA624 Stealth’s 11 was a touch under 1500 RPM, putting them at a disadvantage to the rest of the field.
It still turned in a performance of This brought the Cooler Master MasterAir MA624 Stealth to 56 degrees Celsius while the IceSLEET X7 Dual came in at 55.75 degrees Celsius. Besting these IceSLEET’s is the Cooler Master Hyper 212 EVO which hits 55.5 degrees Celsius.
We noted that the max fan speed on the Cooler Master Hyper 212 EVO topped out at 2050 RPM, the Iceberg Thermal IceSLEET X7 Dual topped out at 1600 RPM, and the be quiet! Dark Rock Pro 4 has the second-lowest max fan rpm at 1500 RPM.
1500 RPM Fan
Dropping the fans slightly to 1,500 RPM actually meant dropping the fan speeds of the Hyper 212 EVO and IceSLEET X7 Dual to 1500 RPM as the MasterAir MA624 and Dark Rock Pro 4 were already there.
The Cooler Master MasterAir MA624 Stealth took the lead as the fan speed reduction caused the IceSLEET X7 Dual and Hyper 212 EVO to fall back a notch. The Cooler Master Hyper 212 EVO came in at 56.88 degrees Celsius.
1000 RPM Fan
Lowering the fan’s RPM further to 1,000 RPM sees the Cooler Master MasterAir MA624 Stealth and be Quiet! Dark Rock Pro 4 takes the lead at 60 degrees Celsius. The Hyper 212 and IceSLEET X7 Dual take a back seat at 60.75 and 60.88 degrees Celsius respectively.
600 RPM Fan
Finally, down at 600 RPM (or as low as we can go), the Cooler Master MasterAir MA624 Stealth takes the lead at 61.5 degrees Celsius. The Iceberg Thermal IceSLEET X7 Dual and be quiet! Dark Rock Pro 4 are holding their own at 66.63 degrees Celsius and 65.5 degrees Celsius respectively. Then, the Cooler Master Hyper 212 EVO brings up the rear at 71 degrees Celsius.
Let’s move on now to look at some overclocking results with our coolers.