Choosing Corsair PSU

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crytech

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Apr 27, 2014
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I want to build a new PC for 'light' purposes and I haven't made a decision of which PSU should I go for. There's a store near my place selling Corsair stuff and they made a pretty good deal for both Corsair CS-M and RM series (Discount). I've read a lot about good/bad stuff about both of this but I want a clear explanation.

What's the difference between both of this PSU? since the difference in price isn't that high.
Which is more reliable between both of this PSU?
What's good and what's bad about both of this PSU? And which should I go for?

There's no need to suggest me another brand, since I know the quality of the other brands such as Rosewill, Seasonic, etc.

But I want this to be clear, since I've read a lot about this CS-M is bad (Forgot) this CS-M is good (PCpartpicker use this for their low-mid budget gaming build pretty often), and
this RM is bad (Shitty capacitors, bla bla bla....) this RM is good (Without reason).

I'm a bit confused, so please explain, Thank you.
 
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The RM is fine for 'light' purposes, assuming by light you mean web browsing, maybe a casual game, but only powering a moderate CPU and low power GPU. The CS just uses poor quality parts in general. Again, it's fine for 'light' builds, but you don't want to be stressing it.

Assuming the RM you're looking at is the 550w, a 'light' build with something like an i3 or maybe i5 and something like a 5670, you should probably be staying in the 'fanless' state, which would make me recommend that more.

For light usage, almost any power supply will be fine. The problem only really comes up in build quality when you start throwing in high-power components, where high power draw can blow a power supply that kills the system.
 
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According the tom's hardware forum PSU list. The RM series is significantly better especially if the prices are comparable.

Get the RM series especially if you are getting one of the following models: RM 450 / 550 / 650w models. Have you compared the store prices to the online prices?

reference: http://www.tomshardware.com/answers/id-1804779/power-supply-unit-tier-list.html

Tier two class A - Excellent quality units, if not, as good as the Tier one class of units. For people who have a limited budget, but still want a reliable unit for the price

Corsair
RM 450 / 550 / 650w models (Made by Channel Well Technology)

Tier three - Meets standard ATX specifications, though closer to the edges than Tier two units. These are still solid units, which still supply stable power to your system, though not ideal for serious overclocking

CS series (High inrush current and +12V ripple levels, only on high levels of load)
 
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Ok, now both of it seems fine for my current build, but I'm planning to upgrade this 'light purposes PC' in the future (To 'heavy purposes'), does keeping one from both of it makes any difference in future than upgrading it into something like Seasonic X (Tier one, thanks for the link Pondering)?

For your information, My current build is something like:

Intel i3 4130
Asus H87i-Plus
Corsair value 1x4GB 1300MHz C9
Samsung 840 EVO 120GB
Asus GTX 750Ti OC 2GB
Corsair 250D Mini-ITX Case
 
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No need to suggest me other PSU, I'm asking of whether keep using one from both PSU in question will make any difference in the future when I want an upgrade (Ignore how many watts that I need in the future just judge from PSU quality) or should I buy another kind of PSU when I want to upgrade (To Seasonic X)?
My future upgrade will be a 'heavy' one.

And also does something wrong with RM750 & RM850?
Thank you
 
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The main difference is in who actually makes it. Corsair does not make PSUs, they just re-brand them. For the RM series, the PSUs up to 650W are made by CWT, very well known to make great PSUs, but Corsair went with a different maker for the 750-850 (they used Chicony, known for using capacitors that are a little cheaper).
 
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Mind you, johnnyguru did love the RM850. Gave it a 9.2+recommended despite the fact that he also found some cheaper capacitors. That says a lot about it, as johnnyguru is one of the hardest PSU testers around. So, I withdraw my earlier comment on this one.

The review: http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story6&reid=369

I personally still wouldn't buy it, as there are better at the same pricepoint. Just pointing out this review
 
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Ok", I get it. So how about this???

"No need to suggest me other PSU, I'm asking of whether keep using one from both PSU in question will make any difference in the future when I want an upgrade (Ignore how many watts that I need in the future just judge from PSU quality) or should I buy another kind of PSU when I want to upgrade (To Seasonic X)?
My future upgrade will be a 'heavy' one."

Thank you.
 
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sr-71 is just concerned that you are considering getting a 850W since you are asking about the issues with the RM750/RM850. sr-71 has moved on from 750W power supplies so the only one that sr-71 was able to recommend with confidence at this time is the 850W EVGA for future reference since you might be getting a PSU with more watts in the future. Just tell them that you will only get one of the RM 450 / 550 / 650w for your 'light' use and everything is good.

Getting a RM 750 or RM 850 would be the same as CS-M series.
 
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Thanks for the answer everybody, didn't mean to offending you guys, but btw I appreciate everything. Now since it's clear for me, then I'll get RM550 for my 'light purposes' build and I'll consider getting Seasonic X or EVGA Supernova G2 for my future upgrades. Thanks to SR-71 Blackbird.
 
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