Stock Clock Testing
For our stock clock testing, we have configured our CPU to run at factory settings for speed, and 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 Cooler Master MASTERAIR MA824 STEALTH to 52 degrees Celsius while the IceSLEET X7 trailing by 3.75 degrees Celsius at 55.75 degrees. It also bested the MA624 and the Dark Rock Pro 4 at 56 and 57 degrees respectively.
Keep in mind that maximum fan speed varies between the units in this test – the Cooler Master MASTERAIR MA824 STEALTH topped out at 1900 and 1550 RPM, the Iceberg Thermal IceSLEET X7 Dual topped out at 1600 RPM, the be quiet! Dark Rock Pro 4 has the lowest max fan rpm at 1500 RPM and the Cooler Master MASTERAIR MA624 STEALTH tipped in just under 1500 RPM.
1500 RPM Fan
Dropping the fans slightly to 1,500 RPM change the playing field much across the competitors. The Cooler Master MASTERAIR MA824 STEALTH came in at 52.75 degrees Celsius which was 3.25 degrees cooler than the MASTERAIR MA624 STEALTH. Iceberg Thermal IceSLEET X7 Dual’s efforts at 56 degrees Celsius and the be quiet! Dark Rock Pro 4 efforts at 57 degrees Celsius rounded out the balance of the scores.
1000 RPM Fan
Lowering the fans RPM further to 1,000 RPM sees the Cooler Master MASTERAIR MA824 STEALTH maintain its lead at 55.25 degrees Celsius which is a seemingly unfair lead over the balance of the pack, which all landed about 5 degrees warmer around 60 degrees Celsius.
600 RPM Fan
Finally, down at 600 RPM, the Cooler Master MASTERAIR MA824 STEALTH and MASTERAIR MA624 STEALTH tied it up at 61.5 degrees Celsius. The Iceberg Thermal IceSLEET X7 Dual and be quiet! Dark Rock Pro 4 fell behind at 66.63 degrees Celsius and 65.5 degrees Celsius respectively.
Let’s move on now to look at some overclocking results with our coolers.