Rdpruitt Posted December 4, 2018 Share Posted December 4, 2018 I just built a new computer in the 500d se. there are three LL 120 in the front and one in the back, and a h115i with ML fans is mounted to the top as exhaust. with all fans + pump on quiet mode in iCUE, while the computer isn't doing anything, the pump and ML fans rpm barley fluctuate at all. the LL fans on the other hand, rev up like jets up to 1400-1500 for no reason, the go back down to around 1000-1100. question 1. why are they doing this? question 2. what is the normal RPM of the LL fans when the computer isn't under any load? question 3. how to I stop this random fluctuation, or how can I lock them from going over 1200. BTW I have a core i9-9900k and no graphics card installed yet. Link to comment Share on other sites More sharing options...
DevBiker Posted December 4, 2018 Share Posted December 4, 2018 Are you using the default "Quiet" fan curve? That's based on CPU Package temperature, which will cause exactly the behavior that you are seeing. The best thing to do is to create a custom fan curve based on a temperature reading from the thermistors that come with the Commander Pro ... I'm assuming, that is, that these are connected to a CoPro. Link to comment Share on other sites More sharing options...
Rdpruitt Posted December 4, 2018 Author Share Posted December 4, 2018 yes the 4 LLs are connected to the CoPro, but do any of those temp things come with the corsair 500d se? that is how I got my CoPro. it came with the case. Link to comment Share on other sites More sharing options...
c-attack Posted December 4, 2018 Share Posted December 4, 2018 In terms of immediate solutions, try using GPU temp as the control source for the front and rear exhaust fans (C-Pro Tab -> Performance -> + to create a custom "cooling mode" or select the existing curve -> Sensor drop down menu). For people with a normal GPU load usage, this creates a fairly predictable curve and you only need to increase the front flow when you need to increase the air exchange rate, like when gaming to the case temp from getting too warm. Another solution would be to use the H115i Temp (coolant temp), but the temp range is smaller and thus adjustments are a little more finicky. However, for people with higher CPU loads or minimal GPU loads, this would be a good choice. Link to comment Share on other sites More sharing options...
DevBiker Posted December 4, 2018 Share Posted December 4, 2018 It should have - I don't have the case myself so I can't confirm. But they are two wire cables with yellow plastic-y stuff on the end. Link to comment Share on other sites More sharing options...
Rdpruitt Posted December 5, 2018 Author Share Posted December 5, 2018 ok I found the temp things. I have 4 of them. where should I place them around my case for the best readings? Link to comment Share on other sites More sharing options...
DevBiker Posted December 5, 2018 Share Posted December 5, 2018 ok I found the temp things. I have 4 of them. where should I place them around my case for the best readings? It'll depend on a number of factors. Personally, I have them on radiator intake, radiator exhaust just above the pump head and around the bottom of the motherboard. Link to comment Share on other sites More sharing options...
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