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Corsair RM450 good or bad quality?

post #1 of 15
Thread Starter 
I'm considering one of the Corsair RM450 for a mini-ITX system that needs to be silent most of the time. 450W will be far more than needed, I expect most of the time the system will only be drawing 60W-120W so with any luck the fan would be off most of the time and I would hope it only kicks in when the weather is hot. Given that the RM are marketed as having no coil whine it looks like a potential winner despite the relatively high price for a 450W unit.

However I'm a little concerned about the quality and reliability. After reading around some of the reviews and user comments at stores like Newegg I'm starting to get the impression that although a couple of the more powerful RM PSUs are good, the 450W version could actually be a bit of a lemon. Most of the negative user comments I've found relate to the RM450 (and to a lesser extent the RM550) and a few mention the unit dying after a couple of months attached to a mini-ITX system.

Is anyone aware of any specific issues with the RM450? if so, are there improved units to look for by manufacture date or batch number?
post #2 of 15
The RM series is very poor quality for a Corsair product. I advise you not to buy an RM product.
See here:
http://www.overclock.net/t/1455892/why-you-might-not-want-to-buy-a-corsair-rm-psu
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post #3 of 15
Its the same as the rest of the CWT made RM models, But it is the only 450 watts thats fully modular. So if you cant live without fully modular you dont have any other options.

But if you can live with semi or non modular you can find better units like the Cooler Master VSM 450 watts the Seasonic G 450 watts or the Rosewill Capstone 450 watts even the XFX Core Edition 450 watts is better
Edited by shilka - 4/14/14 at 7:33am
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post #4 of 15
Read jonny gurus review

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post #5 of 15
Thread Starter 
Quote:
Originally Posted by shilka View Post

...if you can with semi or non modular...
Thanks both for the very quick responses. Corsair RM is off the table then.

Silence is the priority so passive or semi passive cooled is preferable. Semi-modular cabling is fine, but non modular is likely to cause problems due to the mini-ITX nature of the system planned.
post #6 of 15
Don't buy a RM power supply
post #7 of 15
Quote:
Originally Posted by preston.murrell View Post

Read jonny gurus review

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Thats not helpful at all so please dont post if you are not going to help.
And despite what many think or have misunderstood the RM is not crap, Its way overpriced for what you get thats all.
Worst i would call it is below average
Edited by shilka - 4/14/14 at 7:36am
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post #8 of 15
depending where you are from, you might want to check out some of the Fanless PSU's available.

Here in the UK we have Seasonic, FSP and Silverstone fanless PSU's readily available.

the RM Corsairs are claiming zero coil whine which is backed up by a pretty good warranty, and UK customer service is generally great.
Coolermaster's PSU's are incredibly quiet too, I have the V700 which I cannot hear above my case fans/gpu. the V550S is in the same price range as the RM450.

Good luck with your choices but do realise at this level they are all backed up with a fairly decent warranty, although not having to complain in the first place is preferable thumb.gif
    
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post #9 of 15
For higher reliability, you want a fan running, you know. (on top of better internal components, design, layout, lower ripple, etc.)

And what counts as silent? If a 12cm fan's running say 600 rpm, are you going to hear it in your environment?

e.g. Seasonic G360:
http://www.silentpcreview.com/article1297-page4.html

Similar story for Cooler Master V450 semi-modular (V450S).

All I'm saying is that passive cooling mode may not be a requirement for you. Some decent power supplies idle a 14cm fan of similar character at say 950 rpm at low loads, and that's an entirely different story, but "very quiet" might be okay here.
Edited by mikeaj - 4/14/14 at 7:47am
post #10 of 15
Thread Starter 
Quote:
Originally Posted by BakerMan1971 View Post

Seasonic, FSP and Silverstone fanless PSU's readily available.

...although not having to complain in the first place is preferable

Seasonic is my usual go to brand for PSUs but for the fanless and platinum rated units I see far too much negative complaint about the coil whine which is why I'm looking at other units. It's also not my system I'm building, so I want to be extra careful not to recommend something expensive if it's not up to snuff!
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