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video
Black Belt 1st Degree
Joined: 01 Sep 2003
Posts: 1492
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 Posted: Sun Feb 27, 2005 5:17 am Post subject: |
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If you really want to know the difference in them, Cross them over, lookup each component in them, everyone talks about this that & the other, you can see what they are inside. Take the numbers and cross them over to one another. You will be supprised what you find. Get yourself an ECG, NTE book and goto work.
Regs,
trans,
res,
caps,
ziners,
diodes,
look them up and you will soon find out. Just what they have in them. Just because its a name brand PSU, Doesent mean sqwat.
http://nte01.nteinc.com/nte/NTExRefSemiProd.nsf/$$Search?OpenForm
Take an astron power supply ver's the Pyamid power supply, both same components, but the Astron has all sockets in it. Thats the only difference in them. Cost for an average Astron supply nothing under 100.00
Price for the Pyramid supply, starting at 45.00
Price and a name, Dont mean anything. |
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Twisty
Black Belt 1st Degree
Joined: 02 Mar 2001
Posts: 1904
Location: UK
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| Posted: Sun Feb 27, 2005 6:44 am Post subject: |
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If you stick to the well known names then you can be quite sure of what you are getting.
Pulling apart the PSU and working out exactly what goes on inside would be great if you were considering buying in quantity, but not viable if for a home user.
SMPS design is complicated and the only way one is going to determine the best PSU is by looking at hard facts from tests.
Assasin' did the 'larger' PSU draw 0.2 amps more under load as well as at idle. I guess larger inductors and capacitors could lead to losses through magnetising and leakage current.
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video
Black Belt 1st Degree
Joined: 01 Sep 2003
Posts: 1492
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| Posted: Mon Feb 28, 2005 12:24 am Post subject: |
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| webster wrote: | If you stick to the well known names then you can be quite sure of what you are getting.
Pulling apart the PSU and working out exactly what goes on inside would be great if you were considering buying in quantity, but not viable if for a home user.
SMPS design is complicated and the only way one is going to determine the best PSU is by looking at hard facts from tests.
Assasin' did the 'larger' PSU draw 0.2 amps more under load as well as at idle. I guess larger inductors and capacitors could lead to losses through magnetising and leakage current. |
Not always, thats where you can get into trouble, they will buy from the lowest supplier. So if thats the way you look at it, not good. There is no safe way of going about buying, you should always know just what you have, not just the name. But everyone buys differently. |
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kltsin
Black Belt 2nd Degree
Joined: 29 Jun 2004
Posts: 2792
Location: St. Augustine, Fl
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| Posted: Mon Feb 28, 2005 12:30 am Post subject: |
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Anyone here know how to convert power from +5v to +3.3v?
There was a post I was meaning to help with weeks ago on how to do this.
It seems older pci speced mobos ran 5v and newer ones run 3.3, is there any way to modify the card to use the +5v and convert it to +3.3 on the card itself, this would reduce any modifications to the mobo.
This obviously needs a electricians knowledge...
schematics and items needed would be an asset.. Thanks |
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kltsin
Black Belt 2nd Degree
Joined: 29 Jun 2004
Posts: 2792
Location: St. Augustine, Fl
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| Posted: Mon Feb 28, 2005 12:42 am Post subject: |
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| video wrote: | | webster wrote: | If you stick to the well known names then you can be quite sure of what you are getting.
Pulling apart the PSU and working out exactly what goes on inside would be great if you were considering buying in quantity, but not viable if for a home user.
SMPS design is complicated and the only way one is going to determine the best PSU is by looking at hard facts from tests.
Assasin' did the 'larger' PSU draw 0.2 amps more under load as well as at idle. I guess larger inductors and capacitors could lead to losses through magnetising and leakage current. |
Not always, thats where you can get into trouble, they will buy from the lowest supplier. So if thats the way you look at it, not good. There is no safe way of going about buying, you should always know just what you have, not just the name. But everyone buys differently. |
When he said name brands I believe he meant the creator/designer more than a reseller(?) that slaps a name on a psu itself but didnt actually make it, such as Antecs psu's compared to a CompUSA power supply..
Antec made theirs, CompUsa simply through their name on it.
Not that Antec is the best but they are up there in quality, its a good name to follow and much easier to follow a good name than have every person in this forum taking apart their PSU and looking up Capacitor references and getting electrocuted by trying to do so. |
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Twisty
Black Belt 1st Degree
Joined: 02 Mar 2001
Posts: 1904
Location: UK
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| Posted: Mon Feb 28, 2005 7:59 am Post subject: |
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Exactly. Antec was foremost in my mind when I said that. I also deliberatly put 'quite sure' as it's possible for any manufacture to get it wrong.
I put a value on my time and buy good kit with some research rahter than something slightly better after many hours of research.
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kltsin
Black Belt 2nd Degree
Joined: 29 Jun 2004
Posts: 2792
Location: St. Augustine, Fl
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| Posted: Tue Mar 01, 2005 2:06 am Post subject: |
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| webster wrote: | Exactly. Antec was foremost in my mind when I said that. I also deliberatly put 'quite sure' as it's possible for any manufacture to get it wrong.
I put a value on my time and buy good kit with some research rahter than something slightly better after many hours of research. |
I am just trying to get the last word in and have nothing to say 
We are both in agreement, thats scary.. Actually we were promoting the same thing the whole time, a quality PSU. |
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Ryn
Black Belt 4th Degree
Joined: 11 Jan 2004
Posts: 4390
Location: Manila, Philippines
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chchyong89
Initiate
Joined: 11 Jun 2005
Posts: 40
Location: malaysia
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| Posted: Thu Dec 29, 2005 7:41 am Post subject: PSU?? |
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actually how many power (watt) need for a athlon 64 4200 dual core used?in full load and idle......and actually nvidia 7800GTX more power hungry or ATI more??? how many power consumption of a 6600GT???
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asassin'
Brown Belt
Joined: 17 Apr 2002
Posts: 329
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| Posted: Sun Mar 05, 2006 11:46 am Post subject: |
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| Sorry for the late response. Tested with caps discharged to power applied to psu then thru boot, no stress test. Test machine picked as not to stess the lesser psu's capacity. |
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