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Corsair RM650x (2021) power supply review




We review the RM650x power supply from Corsair. This is the 2021 update for the RM series and next to an aesthetic overhaul is offered in a silent RMx series that comes with 80plus Gold certification, which means it's 90% efficient at 50% load. Efficiency matters. The PSU itself is fully modular, for most of you with a side panel window in their chassis a must really as you'll want modular cables.
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cucaulay malkin
Senior Member
Posts: 7182
Senior Member
Posts: 7182
Posted on: 04/09/2021 07:46 AM
every fan is quiet at low rpm
like I said,and others said,ml fans produce a bearing noise when they're not under 1000rpm.
I'll say it again, ML fans need to be configured at low RPM, and they're great at it in terms of acoustics. Much like described in the article and much like described in our fan reviews.
every fan is quiet at low rpm
like I said,and others said,ml fans produce a bearing noise when they're not under 1000rpm.
Hilbert Hagedoorn
Don Vito Corleone
Posts: 45505
Don Vito Corleone
Posts: 45505
Posted on: 04/09/2021 07:50 AM
every fan is quiet at low rpm
like I said,and others said,ml fans produce a bearing noise when they're not under 1000rpm.
You've made your ML hate sufficiently clear in the five posts by now, let's halt it here.
every fan is quiet at low rpm
like I said,and others said,ml fans produce a bearing noise when they're not under 1000rpm.
You've made your ML hate sufficiently clear in the five posts by now, let's halt it here.
Astyanax
Senior Member
Posts: 14939
Senior Member
Posts: 14939
Posted on: 04/09/2021 08:26 AM
is that possible in this power supply though, a switch between always on and hybrid isn't really configuring
I'll say it again, ML fans need to be configured at low RPM, and they're great at it in terms of acoustics. Much like described in the article and much like described in our fan reviews.
is that possible in this power supply though, a switch between always on and hybrid isn't really configuring

alanm
Senior Member
Posts: 11447
Senior Member
Posts: 11447
Posted on: 04/09/2021 08:29 AM
Love my ML140s. Amazing air flow for their size. Never bothered by the noise, but never had to run them at full blast. An ML fan in a PSU is a plus point for me.
Love my ML140s. Amazing air flow for their size. Never bothered by the noise, but never had to run them at full blast. An ML fan in a PSU is a plus point for me.
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Don Vito Corleone
Posts: 45505
I had ml120s that I sold,around 1200-1300rpm they produced something that sounded more like a whirr or buzz than a woosh to me.
now I'm using sp140pro's and while they're not quiet either,it's a different type of noise.it sounds like pushing air.
I'll say it again, ML fans need to be configured at low RPM, and they're great at it in terms of acoustics. Much like described in the article and much like described in our fan reviews.