PSU Mosfets dBm level

[Spezz]

Which one of these psu do you think is more silent (mosfets noise, etc.) ?

- Seasonic G-750 750W 80 Plus Gold Modular
- Corsair RM750i 750W 80 Plus Gold Modula

Both are tested in 50ºC stress conditions for 80 PLUS cert. ?

Any recomendations ?

Thank you, !

 

[datguy20]

The Seasonic G-750 is tier 2, Corsair RM750i is tier 1 http://www.tomshardware.com/forum/id-2547993/psu-tier-list.html If those are your two options, get the Corsair.

 

[ko888]

The Corsair RM750i is the quieter of the two.

Both are rated for up to 50°C.

80 PLUS Certification is performed at 23°C.

Another recommendation is the EVGA SuperNOVA 750 G2 (220-G2-0750-XR).

 

[Spezz]

datguy20 , that Corsair it's made by Channel Well Technology. Seasonic is considered better (quality components) manufacturer (?)

thanks ko888 but in web site were i will buy there no EVGA psu 🙁

cause a friend told me the Seasonic mosfets emitted more noise and Corsair ones were more protected/coated.

thx.

 

[datguy20]

datguy20 , that Corsair it's made by Channel Well Technology. Seasonic is considered better (quality components) manufacturer (?)

thanks ko888 but in web site were i will buy there no EVGA psu 🙁

cause a friend told me the Seasonic mosfets emitted more noise and Corsair ones were more protected/coated.

thx.

Check the tier list I linked. Both are high quality, the Corsair is just higher than the Seasonic. I don't know about the noise specifically though, sorry.

 

[ko888]

datguy20 , that Corsair it's made by Channel Well Technology. Seasonic is considered better (quality components) manufacturer (?)

thanks ko888 but in web site were i will buy there no EVGA psu 🙁

cause a friend told me the Seasonic mosfets emitted more noise and Corsair ones were more protected/coated.

thx.

How about the Super Flower Leadex Gold 750W (SF-750F14MG)?

 

[Spezz]

ko888, pccomponentes.com has only this ones http://www.pccomponentes.com/fuentes_alimentacion.html

max price 140 € ~

so i was looking the psu tier list and that seasonic and corsair seems to be ok

 

[ccampy]

MOSFETs arnt noisey components if you can any of them I'd be worried

 

[Spezz]

so other componentes (?):
http://www.ukgamingcomputers.co.uk/capacitor-squeal-coil-whine-explained-a-63.html

[
A "switching" power supply (like virtually all modern computer power supplies) works by "rectifying" the incoming 120V 60Hz (in the US) AC power into DC (at around 170 volts), "filtering" with capacitors, then using a semiconductor circuit to "chop" the DC voltage around 1000 times a second to turn it back into crude AC. (What's referred to as a "square wave", vs the "sine wave" of ordinary AC.) This "chopped" voltage then runs through a transformer to produce the desired output voltages. The outputs are again rectified to DC and filtered, to produce the desired voltages for the computer.

With this scheme, basic voltage regulation is performed by adjusting the "duty cycle" of the chopped voltage. When the power supply is lightly loaded the circuitry doesn't produce a nice symmetrical "square wave" but instead a series of narrow spikes, and that "spikey" waveform is more likely to produce annoying audible noise in the transformers and other components and is also more likely to produce "electrical noise" that you would, eg, hear in a nearby radio.

Additionally, when a power supply is lightly loaded more of the magnetic field inside a transformer escapes to the case of the transformer and to surrounding components (since less is captured by the "secondary" coil of the transformer), and this "escaping" magnetic field is more apt to cause noise. ]

http://en.gecid.com/power/seasonic_ssr-750rm/

http://hexus.net/tech/reviews/psu/60449-corsair-rm750/

 

[ko888]

datguy20 , that Corsair it's made by Channel Well Technology. Seasonic is considered better (quality components) manufacturer (?)

thanks ko888 but in web site were i will buy there no EVGA psu 🙁

cause a friend told me the Seasonic mosfets emitted more noise and Corsair ones were more protected/coated.

thx.

Go with the RM750i.