Author:
Blood Forum
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Date:
4/20/2010 4:55:18 AM
Subject:
RE: Sim needs a new power supply
he makes some good points with respect to how little most of these pc hardware sites/kiddies actually know when they present themselves as technical. which is annoying cause people like to suck it up. especially forum posters on hardware websites that give advice to people where their statuses are based on their postcounts and their overclock percentages (overclocking is dumb).
ok, its great to point out that websites are praising expensive power supplies for looks/price/poor measurements. and its ever better to say that a 750w power supply doesnt even come close to spec.
that said, you walk a fine line between engineering and real world users. its cool to actually rate a power supply based on whether its good at providing what it says it can. but the thing is, its an exercise in academics, its doesnt really need to be that good. this shit doesnt matter unless youre a EE using this thing on your benchtop for precision testing components ...for some reason. 50-120mV ripple? come on. you feed "12v" and "5v" to your drives and optical drives, "3.3v" and extra "12v" supplies to your motherboard and your video card. these things arent using those supplies indiscriminately. each part on your computer is using its own onboard voltage regulators to take that shit down to something they can use. boards today typically arent running 5v and certainly not 12v. micros are running like 1.8-3.6v, or some shit. they take the dirty power in, and drop it WAY DOWN. provides them with piles of current and a clean source. the only reason to have "12v", "3.3v" and "5v" is to keep it somewhat in spec for the voltage regs on the componants so you dont burn THOSE. lots of them are probably like +/-14v regulators, they can handle a HUGE swing. its precision on the parts themselves.
a cpu is like ~1.2v these days? and its getting fed 12v?! that just speaks to just how precise the regulation is. they have all this available power coming in so they can provide a perfect output. you can swing that input up and down all over the place and the cpu will still get exactly 1.2v. the precision voltage is coming from the motherboard to feed the cpu. if you want to worry about power supplied for stability, look at the motherboard design up to the input into the microprocessor. Oh wait, thats way out of any kiddy hardware douche's ability.
the answer here is that the power supply you pick needs to be able to provide enough POWER for your system. and then voltage outputs that are somewhat sane under the kind of load that your system will place on it. thats it. worrying about your power supply down to the millivolt under some crazy and possibly varing load likes its super crazy important is stupid. its like worrying about the power cable going to it. at that point its just not that important. and managing stability isnt that simple. since the engineering of the motherboard and voltage regulation on ANY part in the computer is out of most peoples grasp, that only thing you can worry about is how the end part preforms. is XX motherboard stable with YY CPU and ZZ video card? great.
Dell, gateway, etc. plain old power supplies. there is a reason for that. enthusiest power supplies are a screw job for the kids that build their own computers and think theyre smart haxors. you can suck money from them because they are IGNORENT. this is why its becoming more expensive to build than to buy.
oh, and for fucks sake, overclocking is stupid.
