Re: Benifits of Branded PSU?
rajuwaste said:
Your answer is like you should use so and so switch otherwise your tube light will mall function and even blow one day it will not give that much of lighting.
As far as I know most of the systems sold in our area without premium branded psu like corsair and I didn't hear any major news about hardware failure because of this.As I already told normal users don't want high efficient psu like corsair only gamers those who buy dedicated graphics card will require that.
The comparison to a switch isn't right. A switch only completes the circuit, a PSU has to convert AC to DC, because thats what all the components in your PC run on.
~~AC~~> PSU > --DC--> VRM > CPU / RAM / ICs / Drives
AC is sinusoidal, and ideally DC has a perfectly stable voltage level, which is what the best PSUs try to get close to.
Any leftover ripple (minor voltage fluctuation) is handled by your Voltage Regulator modules. The work is split out, so if your PSU is not doing a good job, your VRM will have to step up. More ripple = more work by the VRM = more heat dissipated = shorter life.
Long term cases, the effects show up as bulging capacitors which is why the switch to more reliable solid state caps. Extremely bad ripple in case of a poorly designed or overloaded PSU and your VRMs will fry. You only need to walk into any motherboard service centre to check on the number of boards being repaired for damaged VRMs.
True, a lot of users have lighter systems so usually get lucky since at lower loads generic PSUs tend to have not so bad voltage ripple.
Efficiency is a by-product of a good design.
@Ameet :
Some of the advantages I can think of with a Good PSU (I didn't use the term Branded, since even Generic PSUs are branded, and even some Branded PSUs are bad :lol: ) :-
- Better Voltage Regulation/Load regulation, i.e. voltage stays between +/- 5% as per the ATX spec
- Lower ripple, i.e. within +/- 1% as per ATX spec
- Safety Protection like Over-voltage, Over-current, Short-circuit, Over-temperature protection
- Cross-loading is controlled, i.e. unloaded voltage rails don't shoot up beyond the +/- 5% spec if another rail is heavily loaded (Many good PSUs struggle under this test as well)
- Better hold-up times and works over a wider input voltage range
- Better Efficiency; power factor correction (Passive/Active PFC)
This may be shocking, but most generic PSUs dont even meet the minimum ATX specs with voltage regulation and ripple.