SPCR

I see this on many psu's and i am curious for example for this

420W psu how come that +3.3V, +5V, +12V = 400 W and -5V, -12V, 5VSB = 28W if psu is only 420 W and not 428W, why?


And in http://www.ocztechnology.com/products/psuSpec.pdf spec there is some "Peak load (60secs) 620W", does it mean its power on 0-25*C (just before it heat up)?[/img]

At the top of this forum there's a Sticky titled Sticky: # MUST-READ FAQ for System Advice Forum #

Read it, and the Power Supply Fundamentals article linked within.

The answer to your question is in there, along with lots more information.

Rusty075 wrote:At the top of this forum there's a Sticky titled Sticky: # MUST-READ FAQ for System Advice Forum #

Read it, and the Power Supply Fundamentals article linked within.

The answer to your question is in there, along with lots more information.

Dont see how Sticky: # MUST-READ FAQ for System Advice Forum # can answer my question, but i started to read Power Supply Fundamentals before i post, just have no finished yet i am not american and i find this review using to complicated language in comparison with other review sites. I dont mean i dont understand it, but my unerstandability is kinda low at 02am in the morning, so i desided to read it some other time.
I'll let you know if i find answer there.

You can probably find answers to your questions here.

Tephras wrote:You can probably find answers to your questions here.

Nope i did not, i am not electrician i dont care how power run in my pc.

Well if you want to know the answer to your question you'll have to learn a bit - the physics isn't that complicated, it's the sort of thing you'd learn top end of GCSE or lower end of A-level (if you're in the UK).

You can't ask an electronics question and expect the answer not to involve electronics!

Guess what i am not in uk and not in school anymore to.
I dont mind to learn some basic stuff about electronic, but knowing not how current runs insode of wires is just useless to me.

Eh, what exactly is the question here?

Why numbers don't necessarily add up? I can't tell you that. Outright lies is the best I can tell you.

As for the peak load of 620W, basically that's more or less to inform you that it CAN handle that level load for a short period of time. This is somewhat useful if you have a lot of hard drives, especially old huge ones. Depending on the drive, they can draw 10 times more power upon spin up than they can on.

I have a computer that draws 60W at idle, and 112W at full power. However, it has 6 hard drives in there, 2 of them old SCSI beasts (you'll break your foot if you drop the drive on it). I've measured it, and on startup I've seen it draw as much as 300W!!! Were I a REAL sysadmin, this might be useful information to know. So, OCZ is kindly informing you that it can handle a little more power than what it's rated for, but not for any great length of time.