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Phaedrus PSU Q&A - August - Page 2

post #11 of 56
Thread Starter 
Quote:
Originally Posted by shnur View Post
*raises hand*

How can I test my power supply before voiding the warranty?
I just bought it, and since I need to open to sleeve it nicely

I've tested with a multi-meter and all voltages seem OK. Also plugged a fan in it.
Is there anything else I can get?
Aside from what you've done there isn't much you can do without a load bank, oscilloscope, and/or power meter. Those devices have a minimum cost of $800, $250, and $175 respectively, for equipment suitable for determining if a PSU is really in good shape.
post #12 of 56
Okay I'll say something different and a question to you after my "babble" below.

On 8-1-11 I purchased from Newegg a Seasonic X-650 PSU, received it yesterday and as soon as I took the unit out of the velvet bag it was RMA bound.

Why?

Well #1 I saw some scratches though not very deep on one area on the edge of the casing opposite to where the fan is mounted, but #2 what made it really RMA bound is that on that same panel there's a center screw which was most of the way out and as I gingerly tried to screw it back in it wouldn't tighten. I take that this screw somehow maybe also goes into the PSU PCB.

So today this gets picked up by UPS at my residence for free (asked Newegg kindly for this when I called them) and the replacement should also be sent out today and may most likely receive it tomorrow. Lets see if I can get a normal one for a change. If a Newegg rep is reading this I want to thank you for excellent customer service.

I must say that this PSU seems like quality all around which had a paper tag around it easily removed stating how this PSU pretty much runs in fanless mode and was quite nice holding a PSU without any cables snaking out. I just got unlucky that a lightly scratched and is seen easy enough with my eyes under a light and and a screw that was most likely over-torqued in the manufacturing process came into my hands. Why then I can't get the other rare thing like winning a big lottery?

So Phaedrus have you ever received a brand new PSU with these type issues from the many?
Edited by nickt1862 - 8/3/11 at 8:09am
post #13 of 56
Thread Starter 
Quote:
Originally Posted by nickt1862 View Post
Okay I'll say something different and a question to you after my "babble" below.

On 8-1-11 I purchased from Newegg a Seasonic X-650 PSU, received it yesterday and as soon as I took the unit out of the velvet bag it was RMA bound.

Why?

Well #1 I saw some scratches though not very deep on one area on the edge of the casing opposite to where the fan is mounted, but #2 what made it really RMA bound is that on that same panel there's a center screw which was most of the way out and as I gingerly tried to screw it back in it wouldn't tighten. I take that this screw somehow maybe also goes into the PSU PCB.

So today this gets picked up by UPS at my residence for free (asked Newegg kindly for this when I called them) and the replacement should also be sent out today and may most likely receive it tomorrow. Lets see if I can get a normal one for a change. If a Newegg rep is reading this I want to thank you for excellent customer service.

I must say that this PSU seems like quality all around which had a paper tag around it easily removed stating how this PSU pretty much runs in fanless mode and was quite nice holding a PSU without any cables snaking out. I just got unlucky that a lightly scratched and is seen easy enough with my eyes under a light and and a screw that was most likely over-torqued in the manufacturing process came into my hands. Why then I can't get the other rare thing like winning a big lottery?

So Phaedrus have you ever received a brand new PSU with these type issues from the many?
Stuff happens. Remember, this stuff is shipped all the way from the P.R. of C.
post #14 of 56
Wow! A Q&A!

Ok, here are my questions:

-I have been loving this HX 750, it has lots of power, the rails don't droop under load, and it's just overall awesome. However, with all great things, there are some weaknesses. So I was just wondering if there are any things that I should watch out for on this PSU.

-Are there any mods I can do to this PSU to make it even more awesome? I don't have any problems with it now, but hey, this is Overclock.net


Thanks Man!

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post #15 of 56
I heard from my engineer friend that there is a kind of power supply (not for consumers) that is 100% or near 100% efficient. If it exists, what is it and how is it possible?
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post #16 of 56
My question is:

How the heII do you know so much about PSUs?
     
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post #17 of 56
Quote:
Originally Posted by youra6 View Post
I heard from my engineer friend that there is a kind of power supply (not for consumers) that is 100% or near 100% efficient. If it exists, what is it and how is it possible?
That's like saying there is a perpetual motion machine here on this plane of existance. It's simply not true, there are machines that come close but none will remain in motion for eternity without any extra positive force as there will always be negative forces acting upon it.

At some point heat will be given off by a psu and at that point it is no longer 100% efficient.

Now if you are saying near, then maybe. Conceptually the hardware market works in steps, nothing is just released when ever. Just like the next video cards are already developed but they are waiting for the right time to make the most money with the release. If you want specifics on how PSU could be created like that then the person who knows that answer wouldn't tell you as that could potentially land them a nice job and nice fortune.
Edited by WTHbot - 8/4/11 at 9:42am
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post #18 of 56
Quote:
Originally Posted by WTHbot View Post

Now if you are saying near, then maybe. Conceptually the hardware market works in steps, nothing is just released when ever. Just like the next video cards are already developed but they are waiting for the right time to make the most money with the release. If you want specifics on how PSU could be created like that then the person who knows that answer wouldn't tell you as that could potentially land them a nice job and nice fortune.
This is a power supply that supposedly runs in labs and research buildings, not in a computer mind you.

When I said 100%, I actually meant something very close to 100% where the difference is so negligible, it might as well be.
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post #19 of 56
Thread Starter 
Quote:
Originally Posted by youra6 View Post
I heard from my engineer friend that there is a kind of power supply (not for consumers) that is 100% or near 100% efficient. If it exists, what is it and how is it possible?
Using very advanced topologies, very high-end components, and some clever engineering, it's possible to get a single output AC-DC SMPSU to efficiencies of 97%. In a DC-DC SMPSU, it's possible to achieve 99%.


Enthusiast ATX12V PSUs have a very complex job. They need to be able to take a wide range of AC input voltages and frequencies, convert it to three main DC voltages (+12V, +5V, +3.3V) and a standby voltage (+5VSB) and a legacy voltage (-12V) while adhering to strict specifications on noise and voltage regulation, being able to support a near-infinite combination of hardware configurations, and have PFC so that they don't deharmonize the AC mains, AND have a quiet cooling system, AND have features that enthusiasts want like modularity, AND look good, AND be affordable to the average computer enthusiast consumer.

I think we can thus excuse them for being a few % less efficient than their more specialized brethren.
post #20 of 56
are there any PSUs that will tell you power used, this would be a good function to have, either by software or on unit display
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