A computer components & hardware forum. HardwareBanter

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Go Back   Home » HardwareBanter forum » Processors » Overclocking AMD Processors
Site Map Home Register Authors List Search Today's Posts Mark Forums Read Web Partners

Cheap/generic PSUs - any good? (was: Low power socket A)



 
 
Thread Tools Display Modes
  #1  
Old September 26th 04, 02:23 AM
Mac
external usenet poster
 
Posts: n/a
Default Cheap/generic PSUs - any good? (was: Low power socket A)

On Thu, 23 Sep 2004 17:11:22 -0500, David Maynard
wrote:


Terran Melconian wrote:


....

...
I expect that the power ratings for the individual voltage outputs were
spec'ed in the same dishonest way that hifi manufacturers used to rate power
amps (still do, in fact). Each *individual* output would supply the
specified current or wattage; but load them all up at the same time and POW!


Well, an audio amp shouldn't 'pow'. What should happen with a single
channel power spec is you run into distortion before you reach what you
'think', from the channel spec, is max power output. (spec'ing single
channel power is done to cover the power supply's inability to provide that
much power to both channels simultaneously. Voltage output droops and
causes distortion)


Amp manufacturers used to spec their output power one channel at a time, for
a *very* short time (even down to milliseconds). They could 'honestly'
state an inflated value, but real-world ratings were considerably less.


Well, I don't think whether it's both channels driven or the bogus 'peak
music power' really fall into the same category. A single channel spec does
have some sense to it. 'Peak Music Power' doesn't.

But, for a completely 'honest' number one should be looking to continuous
RMS output, both channels driven.


I seem to remember there was a "peak music power" test or some such
thing where they did actually run a power amp circuit for some
fraction of a second before it vaporized and claimed the measured
output as the spec of the amp.

After that nonsense, they got into honest specs for awhile. RMS output
measured with both channels driven into 8 ohms, across 20hz-20khz
bandwidth.

Then all that went away and all you see now is these silly X.1 channel
entertainment boxes.

Personally, I like to spin the amp around and read the UL wattage
label on the back of the unit.

100watts per channel 5.1 with a 230watt UL sticker


 




Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Help me pick out a good mobo to use with XP 2800+ Ben in TN Overclocking AMD Processors 3 February 7th 04 12:25 PM
Good PSUs? Zilog Jones General 2 September 28th 03 12:19 AM
Fortran PSU's in the UK? Bill L Homebuilt PC's 16 August 5th 03 10:23 PM
Good 2500+ ? Thomas Andersson Overclocking AMD Processors 3 July 21st 03 04:10 PM
Is Swiftech MCX462 PLUS any good? S.Heenan Overclocking AMD Processors 4 June 29th 03 10:23 PM


All times are GMT +1. The time now is 11:05 AM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2004-2024 HardwareBanter.
The comments are property of their posters.