Page 3 - Test Results
Our test configuration is as follows:
CPU: Intel Core i5-6400 @ 2.7GHz (Stock settings)
Motherboard: Gigabyte GA-H170-D3HP
RAM: Kingston HyperX Fury HX426C15FBK4/32 4x8GB
Chassis: SilverStone Precision PS14
Power: SilverStone Nightjar NJ520 520W
Storage: OCZ Trion 150 480GB
Operating System: Microsoft Windows 10 Pro x64
All tests were run in our custom-built computer to best reflect real life performance. The computer remained in the same place and room for all tests. The ambient temperature of the room was roughly 22 degrees Celsius. The thermal paste applied to each cooler was stock respective to their manufacturers to rate its performance. Sufficient time between testing was applied for the paste to settle. The fans on all heatsinks were connected to the same motherboard 4-pin connector. The test computer was turned on and idling for at least one hour for the idling tests. High CPU load results were obtained using the Prime95 in place large FFTs test with four worker threads for a minimum of fifteen minutes and recorded when the temperature was deemed stable. The Okeanos RC-1402 was tested using the stock fans from the factory. The performance was compared with three other air-cooled CPU coolers that feature single fan design, namely the Reeven Justice RC-1204, the Reeven Ouranos RC-1401, and Scythe Mugen 5. The purpose of doing such tests was not for a performance competition, since they were quite different in terms of fan size; it is only for relative performance comparison. The temperature results for each cooler was measured with CoreTemp, which reports the CPU's integrated digital thermal sensor for maximum accuracy. Each temperature result was calculated by taking the maximum value of the cores inside the CPU.
In the idle test, the four coolers had similar results. The Reeven Okeanos RC-1402 stabilized at 20 degrees Celsius. It was a pretty good result, considering the ambient room temperature was around 22 degrees Celsius. The temperature at idle state of the Okeanos RC-1402 was the same as the Ouranos RC-1401. They could bring the CPU temperature down to 20 degrees. At idle state, the Okeanos RC-1402 outperformed the Justice RC-1204 and the Scythe Mugen 5. I think the reason was because the Okeanos RC-1402 had one 140mm fan and one 120mm fan, while the Justice RC-1204 and the Scythe Mugen 5 only had a 120mm fan. The results suggest at idle state, the Reeven Okeanos RC-1402 had great performance, without a doubt.
The real challenge happened when the CPU was working at high load. Along with the increased processing speed of the CPU, the fan’s RPM also reached the maximum. After about half an hour, the Okeanos RC-1402 kept the temperature constant at 36 degrees Celsius. Today’s review unit came in four degrees lower compared to the Ouranos RC-1401. Please note regarding the single 140mm fan performance, the Ouranos RC-1401 and the Okeanos RC-1402 have the exactly the same 140mm fan. Meanwhile, the Okeanos RC-1402 has one more 120mm fan, which brings the cooling performance of the Okeanos RC-1402 to the next level. On the other hand, the temperature difference between the single fan products was rather small. I believe with a good design, it does not matter whether the CPU cooler has a smaller fan or a bigger fan, the cooling performance can be very similar. However, the CPU cooling performance can be improved by using more fans. In this case, the combination of a 140mm fan and a 120mm fan has better CPU cooling performance than those single fan CPU coolers when the CPU is under load.
I am the kind of person who really cares about the noise level of my computer. In this case, I only had one fan running on the air-cooled heatsink, but is important to note there were three other fans inside the case. On a scale of 0 to 10, where 0 is totally silent and 10 is a jet taking off, I would rate the Reeven Okeanos RC-1402 at 2.0/10 and 3.0/10 regarding noise emissions at idle and load, respectively. The Reeven PWM fans were really quiet at low RPM thanks to the sleeve bearing. However, the fans can be a little bit noisy at higher RPMs, but the RPM can be restricted by using the Speed Switch Adapter cable. Overall speaking, the Okeanos RC-1402 had very good performance despite being a bit heavier than other single fan CPU coolers. After all the tests were done, I would like to say that the Reeven Okeanos RC-1402 is a well-designed CPU cooler with strong CPU cooling performance. Why is that? Because it had outstanding cooling performance as measured above and acceptable subjective noise level test results.
1. Introduction, Packaging, Specifications
2. Physical Look - Hardware; Installation
3. Test Results