PSU question

[MarcB]

Hello,on the Corsair rm550x fan will turn on, when the watts are running up, or when the temperature is high?

because, if the fan start only when the watts are high, it can stay I say on 250-300 watts a long period of time and the PSU can overheat, and the fan don`t starts, if the fan works only when the watts are high.

 

I need to know, thanks

[Moonzy]

2 minutes ago, MarcB said:

Hello,on the Corsair rm550x fan will turn on, when the watts are running up, or when the temperature is high?

because, if the fan start only when the watts are high, it can stay I say on 250-300 watts a long period of time and the PSU can overheat, and the fan don`t starts, if the fan works only when the watts are high.

 

I need to know, thanks

if the fan doesnt spin means its capable of dissipating heat at that wattage without the fan

unless the designer is that stupid

 

but i think its more temperature controlled than load controlled so you should be fine...

[MarcB]

Just now, Moonzy said:

if the fan doesnt spin means its capable of dissipating heat at that wattage without the fan

unless the designer is that stupid

 

but i think its more temperature controlled than load controlled so you should be fine...

ok,thanks for fast reply

[Toxicknight79]

Are you asking because you have it  shutting down , or just a general concern because the fan in the corsair normally wont kick on unless its felt its getting warm enough or, that its under its needed to kick in load.

 

[MarcB]

Just now, Toxicknight79 said:

Are you asking because you have it  shutting down , or just a general concern because the fan in the corsair normally wont kick on unless its felt its getting warm enough or, that its under its needed to kick in load.

 

i`m asking because i want to order it today, and i want to be sure it`s a good PSU, and i will don`t have any problems with it. Thanks

and i want to know if it works fine with haswell build?

[Moonzy]

Just now, MarcB said:

i`m asking because i want to order it today, and i want to be sure it`s a good PSU, and i will don`t have any problems with it. Thanks

and i want to know if it works fine with haswell build?

its a good psu, dont worry

 

as for compatibility

long answer

http://www.corsair.com/en-us/blog/2013/may/haswell-compatibility-with-corsair-power-supplies

short answer

yes

[LadyOfGifts]

2 minutes ago, MarcB said:

i`m asking because i want to order it today, and i want to be sure it`s a good PSU, and i will don`t have any problems with it. Thanks

and i want to know if it works fine with haswell build?

Usually if it's Corsair it's a good bet that it's quality. Their power supplies are pretty great. And the architecture of your CPU shouldn't really affect anything, just check and make sure the cables match your needs.

[MarcB]

Just now, LordOfGifts said:

Usually if it's Corsair it's a good bet that it's quality. Their power supplies are pretty great.

ok, thanks a lot

[MarcB]

3 minutes ago, Moonzy said:

its a good psu, dont worry

 

as for compatibility

long answer

http://www.corsair.com/en-us/blog/2013/may/haswell-compatibility-with-corsair-power-supplies

short answer

yes

i don`t see in that link , corsair RMx series(i know that link it is from 2013 and rmx are younger) but it still work with haswell allright,rmx being the newer series?

[Moonzy]

7 minutes ago, MarcB said:

i don`t see in that link , corsair RMx series(i know that link it is from 2013 and rmx are younger) but it still work with haswell allright,rmx being the newer series?

its supported dont worry

 

12 minutes ago, LordOfGifts said:

Usually if it's Corsair it's a good bet that it's quality. Their power supplies are pretty great. And the architecture of your CPU shouldn't really affect anything, just check and make sure the cables match your needs.

1) corsair makes good (AXi) and bad (CX) psus

2) architecture does affect the compatibility of the psu, haswell c-stepping technologies may cause some psu to detect underpower state and shut itself off (correct me if im wrong but its approximately something like this)

[MarcB]

1 minute ago, Moonzy said:

its supported dont worry

 

1) corsair makes good (AXi) and bad (CX) psus

2) architecture does affect the compatibility of the psu, haswell c-stepping technologies may cost some psu to detect underpower state and shut itself off (correct me if im wrong but its approximately something like this)

good afirmation, I need some answers for this, thanks

[quan289]

Since the RMx is a DC-DC regulated power supply, it is "Haswell compatible".

 

The methodology in which Intel determine whether or not it is "compatible" is putting it into an heavy crossload scenario where there is only 0.15A on the 12V rail and max combined load on the minor rail (3.3V and 5V). Certain PSU design can't deal with this type of load in which the voltages may go out of ATX specification.
If you look at this crossload chart at Tomshardware on the RM550x, you will see that no matter how you distribute the power across the rails, it will stay within 1% of nominal and thus fully compatible with "Haswell".

 

Quite honestly, set aside that loading the minor rail to max is unlikely on a modern day system, even if it isn't "compatible", you should be able to disable the sleep state in the BIOS anyways.