Mild OC Testing

For our Mild OC testing, we have configured our CPU to run 4300MHz on all cores, set the voltage to 1.15V, and configured memory to XMP mode. This yields an approximate power at the wall of 450w under load (a 350w differential from idle, which pulls about 100w). This results in the CPU running at 4.3GHz on all cores during the looping rounds of Cinebench R20. You can read more about this in our introduction article here.

Max Fans – 100% Pump Speed

ASUS Ryujin 240 performance at mild overclock clocks, max fan RPM and 100% pump

Running our AIOs at full tilt on fans and pumps lead to the ASUS ROG Ryujin 240 to post a temperature of 76 degrees Celsius. The only unit to do this badly before was the SilverStone PF240-RGB. The Enermax AQUAFUSION 240, the other 240mm cooler we have seen, posted a temperature of 73 degrees Celsius. The SilverStone PF360-ARGB did the best here posting a temperature of just 71 degrees Celsius. The max fan speed on the LIQTECH II 360/AQUAFUSION 240 was ~2250 RPM, the PF360-ARGB/PF240-ARGB/Ryujin 240 was ~2000 RPM, and the H115i was ~1800 RPM.

1500 RPM Fans – 100% Pump Speed

ASUS Ryujin 240 performance at mild overclock clocks, 1500 fan RPM and 100% pump

Bringing the fans down to 1500 RPM brought the Corsair back to the front of the pack at 74 degrees Celsius. This was also a full 7 degrees Celsius cooler than the ASUS ROG Ryujin 240. However, once more, the Ryujin 240 was in the middle of the pack of 240mm coolers as the Enermax AQUAFUSION 240 did a bit better and the SilverStone PF240-ARGB did a bit worse.

1000 RPM Fans – 100% Pump Speed

ASUS Ryujin 240 performance at mild overclock clocks, 1000 fan RPM and 100% pump

With the fans set to 1000 RPM, the SilverStone PF360-RGB is the clear leader at 82 degrees Celsius. The Enermax AQUAFUSION 240 came in at 90 degrees Celsius and SilverStone PF240-ARGB that was unable to sustain a temperature below the point where thermal throttling kicks in on our processor. This means that the 92 degrees Celsius number that the ASUS ROG Ryujin 240 posted made it the middle of the pack among 240mm coolers again.

600 RPM Fans – 50% and 100% Pump Speed

At the 600 RPM fan speed at both 50% and 100% pump speeds, all of the units let the temperature get out of control and thermal throttling kicked in as the CPU temperature reached above 98 degrees Celsius.

Let’s move on now to look at some Max Overclocking results with our coolers.

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David Schroth

David is a computer hardware enthusiast that has been tinkering with computer hardware for the past 25 years.

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7 Comments

  1. David, did you see the video by GN on AIO Setups and things to avoid?

    Air in the system will always travel to the highest portion of the system. Having the inlet/outlet of the radiator in the orientation that you have, will lead to weaker water-flow to the block.

  2. I’ve always wondered how AIOs deal with air. I had assumed they just vacuum filled them to eliminate all the air, and the hoses were flexible enough to handle the thermal expansion. Any air that gets in afterwards would have been either from a leak or suspended in the coolant and come out of solution, and would pretty much kill the AIO.

    Any air in a closed loop system is bad no matter where it collects – in a pump it will kill the pump, in a line it will kill flow, in a rad it will kill cooling, and anywhere in the flow path and it makes noise. That’s half the reason why you have a tank in a custom loop – so the air can collect there and stay out of your lines, pumps, and rads.

  3. Steve’s rational on air though made sense, in that if you place it on portion of the tank where the water migrates from hot to cool, it’s the least impactful.
  4. David, did you see the video by GN on AIO Setups and things to avoid?

    Air in the system will always travel to the highest portion of the system. Having the inlet/outlet of the radiator in the orientation that you have, will lead to weaker water-flow to the block.

    Yeah.. saw it. Couple of issues with changing the orientation though….

    1. Radiator tubes are not long enough on any aio tested so far to flip it over on the current rig.
    2. Would have to redo all testing for comparison data across all coolers.

    So, maybe when I’m in the market for a new case I’ll change it out, but at this point, less than perfect will be the way we have to do it

  5. Yeah.. saw it. Couple of issues with changing the orientation though….

    1. Radiator tubes are not long enough on any aio tested so far to flip it over on the current rig.
    2. Would have to redo all testing for comparison data across all coolers.

    So, maybe when I’m in the market for a new case I’ll change it out, but at this point, less than perfect will be the way we have to do it

    Thank you for the explanation! Keep up the great work on the reviews!

  6. Thank you for the explanation! Keep up the great work on the reviews!

    Just flipped through the video a second time. Overall, the main reason we would have issues in the current orientation is more related to bubbles getting sucked into the tubes – it seems to be the "best" of the "wrong" ways to mount it… So that’s something, right?

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