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Windows 7: PSU true rated vs generic

11 Nov 2013   #1

windows 7 ultimate 32-bit
PSU true rated vs generic

i want to know whats the difference of having a true rated than generic

what could be the side effect of using generic psu

whats the advantage of using true rated psu

My System SpecsSystem Spec
11 Nov 2013   #2


By a "true Rated" I assume you mean a quality branded power supply with a bronze/silver/gold rating?

Typically a "rated" PSU uses better components and are more reliable.

Generic PSU's often use cheaper components, can be a little less than truthful of about their actually capability (pretend they are more powerful than they really are) and sometimes do not included some safety features like over voltage protection. They also generally lack build quality or Quality assurance.

Higher quality PSU's are generally more accurate about their capabilities (even underrate there capability), include over voltage protection. Over voltage protection is very important in case a PSU blows up. It does not allow excess currents to flow through to damage other components like motherboards, CPUS, GPU'S and Hard drives. With out over voltage protection the excess current runs right through your system.

It all depends on what you plan to use the PC for. If it's for a high load, gaming, overclocking machine etc - generic power supplies can be potentially ruin your entire system. They are a gamble.

If it's just for a low end desktop used for browsing, word processing etc then you can get a way with a generic PSU as long as you go nowhere near it's limits.

Some generic power supplies will "do the job" - others are a time bomb waiting to happen.
My System SpecsSystem Spec
12 Nov 2013   #3

7 Pro x64, 10 Pro x64

also higher grade psu's will save you on your electric bill if its at least a 80 plus gold since being more effiecnt saves you power waste.
My System SpecsSystem Spec

12 Nov 2013   #4

windows 7 ultimate 32-bit

i dont care much about energy effieciency.

im not a hardcore gamer really. enough to play league of legends online games
gta iv
dirt 3

and i dont overclocking

w/ 5-8hrs a day is generic will still be ok for that
My System SpecsSystem Spec
12 Nov 2013   #5

Windows 7 Pro 64 bit

A cheap PSU is a poor way to economize. There are all kinds of ways that power ratings can be calculated and the manufacturers of cheap PSUs will use the method that is to their advantage, not yours. A cheap PSU may have similar ratings as a quality unit but the actual capabilities may be very different. One big problem with cheap PSUs is that they often don't die alone but may take your motherboard and other components with them when they fail. The small amount you save on a cheap PSU may cost you a great deal more if it fails. And they do fail.
My System SpecsSystem Spec
13 Nov 2013   #6

windows 7 ultimate 32-bit

you all know im on a tight budget but how about buying a used true rated PSU which cost much than brand new generic
My System SpecsSystem Spec
13 Nov 2013   #7

windows 7 ultimate 32-bit

used true rated like golden key, zeus, energy star, works. brands of psu all 500 watts.

what do u think will this work better than generic?
My System SpecsSystem Spec
13 Nov 2013   #8


All sound generic tbh.

Go for new if you can.

If you know your specs, like CPU and GPU in particular - that will help. Knowing which graphics card is the most important thing.

Unfortunately 500W means little really. Especially when it comes to GPU's since they are the single most taxing/heavy draw component. A psu may deliver 500W in total across the 12v, 5V, and 3V spectrum. But it doesn't mean it can poer EVERYTHING.

As I mentioned above - as long as as you aren't going anywhere near the "maximum' potential, you can get away with a generic PSU.

But ageneric "500W" realistically may only be capable of 400W at full load total across all 12v, 5W, 3V rails. (A rail is basically the separation of voltage usage)

For Graphics cards it comes down to to how much Amperage the 12v rail (section) can deliver. For example if a video card needs 24Amps on the 12V rail (section) to run and the PSU can only only deliver 16Amps on the 12V rail -then that's trouble in the making. Avoid at all cost.

The card may not run, it will cause PC crashes, or at worse blow the entire PC apart if the PSU is pushed to far.

I can understand you're after the cheapest possible unit. We are simply trying to explain how potentially damaging using the wrong and graphics card can be.
My System SpecsSystem Spec
13 Nov 2013   #9

windows 7 ultimate 32-bit

im not planning to get a vcard cause i have an ivy bridge hd graphics and im fine with it. running games at low settings im cool with it.

so using a generic psu without a vcard wouldnt have much problem at all? maybe avg of 2-8 hrs a day gaming. i just play online games not heavy graphics games
My System SpecsSystem Spec
13 Nov 2013   #10

Windows 7 Pro 64 bit

I just want to emphasize something I already said: "A cheap PSU is a poor way to economize."
The power rating is just a number. On a cheap PSU you really have no way of knowing what it means.
My System SpecsSystem Spec

 PSU true rated vs generic

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