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Old 03-31-2019, 02:11 PM
c-attack c-attack is offline
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c-attack's PC Specs
Join Date: Jun 2014
Posts: 11,186
POST ID # = 999680
c-attack c-attack Reputation: 116

Here is some specific data from another user. He was running an AXV x264 application for about 15 minutes.

Hardware: 9900K 5GHz all cores ~1.32V, H150i pump
Initial Liquid Temp ~28C
Pump Speed 2800RPM fan speeds 1600RPM: Liquid temp 36, CPU package temp 81
Pump Speed 2800RPM fan speeds 1200RPM: Liquid temp 37, CPU package temp 83

The key here is the coolant temperature for comparison. He sees about a +8C rise. Your usage may not be quite as intense, but I suspect you may still see coolant deltas around +10-12 when really pushing it. Fan design is usually going to be superseded drastically by a 50% increase in radiator size. One of the key advantages of a 360 is you can get the same cooling with slower or weaker fans because of the larger surface area.

You also can claw your way through comparison of other radiators. This is an often cited source and from that you can compare the two radiators below. It is not meant to be a direct comparison to your H100i since both of these are 60mm thick, but they are identical otherwise for the 240 to 260 comparison. You won't ever get a perfect 50% increase in heat dissipation, but there is about 90W difference between the two models at the 1300 rpm mark where you might like to keep the fans. That more than covers any change to a slightly weaker fan. These are also 300W loads. The 9900K at your settings is likely closer to 225-240W, so that will reduce the overall coolant rise.

240 x 60mm radiator
360 x 60mm radiator
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