seasonic PowerAngel reads super high PF

PSUs: The source of DC power for all components in the PC & often a big noise source.

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sailor
Posts: 5
Joined: Mon Apr 16, 2007 7:13 am

seasonic PowerAngel reads super high PF

Post by sailor » Tue Jun 26, 2007 6:32 am

got myself a seasonic powerangel and test some rigs,
it reads 95%~99% in PF for the computers with the following power supplies:

1. seasonic S12 380W, (approx. 55W, 56VA~ at idle)
2. seasonic S12 330W, (approx. 44W, 45VA~ at idle)
3. Morex mini-itx 60W, (approx. 13W, 14VA~ at idle)

should i be happy or...?

burebista
Posts: 402
Joined: Fri Sep 02, 2005 12:05 am
Location: Romania

Post by burebista » Tue Jun 26, 2007 6:49 am

Yep, it's OK. Power factor should be close to 1.

sailor
Posts: 5
Joined: Mon Apr 16, 2007 7:13 am

Post by sailor » Tue Jun 26, 2007 8:03 am

i have two groups of PF data measured, one group is super high and the other (2 oldies) is around 57%.

i just searched the google and i found this article "PFC decoded" http://www.dansdata.com/gz028.htm , it seems reasonable for a guy like me who doesnt know about electrics and stuff.

burebista
Posts: 402
Joined: Fri Sep 02, 2005 12:05 am
Location: Romania

Post by burebista » Tue Jun 26, 2007 8:07 am

Those super high are PSU's with active PFC and those with ~57% are with passive PFC or without PFC.

Mr Evil
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Post by Mr Evil » Tue Jun 26, 2007 8:16 am

burebista wrote:...those with ~57% are with passive PFC or without PFC.
At a pitiful 0.57 I would expect that to be no PFC at all. Passive PFC would probably improve that to about 0.7-0.8.

efcoins2
Posts: 40
Joined: Wed Nov 15, 2006 3:19 am

Post by efcoins2 » Wed Jun 27, 2007 1:20 am

95% PF from an APC PSU, you should be unhappy.
APC PSUs usually claim 99% PF

SnooP
Posts: 106
Joined: Mon Nov 28, 2005 1:01 am

Post by SnooP » Wed Jun 27, 2007 1:39 am

99% is at load, under idle conditions say < 100w its often 'only' 95%. Keep in mind at < 100w its a only a watt or two extra. Same as claimed efficiency, its always at load (say 50-75% or something). some are worse dropping as low as 80%, eg.
http://www.silentpcreview.com/article742-page5.html

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