My new system is just a little under two months old. All was blissful (i.e. quiet) until about a week ago when I noticed intermittent noise from the computer case. I tracked it down to the CM AIO pump block.
In UEFI, the motherboard fan connector to which the pump is connected has been set to Full Speed from day #1 to keep the pump operating as recommended. However since about a week ago the pump intermittently ramps up for a few seconds and produces a grinding/rattling noise. HWMonitor shows the "fan speed" (not sure what it is actually measuring on a pump?) is normally 2700-2800 rpm. When the pump makes the grinding noise, HWMonitor shows about 3100-3200 rpm. The CPU and motherboard temps are not high when it happens.
For a brief period, I connected the pump to a Molex-to-3-pin adapter to make sure the motherboard wasn't sending stray signals to alter the speed. In that configuration the pump rhythmically sped up/slowed down continually, so I went back to the motherboard fan connector with only intermittent speed bursts.
Is this a sign of a failing AIO system? It's not so easy to RMA things here in Thailand and the seller only has a 30-day warranty. If I do need to RMA it (CM has a two-year warranty) do I need to wait for the thing to outright fail, or is this new noise worthy of replacement?
In UEFI, the motherboard fan connector to which the pump is connected has been set to Full Speed from day #1 to keep the pump operating as recommended. However since about a week ago the pump intermittently ramps up for a few seconds and produces a grinding/rattling noise. HWMonitor shows the "fan speed" (not sure what it is actually measuring on a pump?) is normally 2700-2800 rpm. When the pump makes the grinding noise, HWMonitor shows about 3100-3200 rpm. The CPU and motherboard temps are not high when it happens.
For a brief period, I connected the pump to a Molex-to-3-pin adapter to make sure the motherboard wasn't sending stray signals to alter the speed. In that configuration the pump rhythmically sped up/slowed down continually, so I went back to the motherboard fan connector with only intermittent speed bursts.
Is this a sign of a failing AIO system? It's not so easy to RMA things here in Thailand and the seller only has a 30-day warranty. If I do need to RMA it (CM has a two-year warranty) do I need to wait for the thing to outright fail, or is this new noise worthy of replacement?
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