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msattler
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Message 1076588 - Posted: 12 Feb 2011, 22:54:43 UTC - in response to Message 1076586.

Don't rely on all advice given heretofore in this thread, some is pure BS.

First off, buying big is never bad advice. In fact, I recall some PSU makes posting efficiency charts that showed their product doing their most power friendly work at some 70-80 percent of full load. Voltage stability was optimized in that range as well. So DON'T buy a PSU that will be loaded to the hilt.

My guess is that most PSUs are best with about a 70 to 80 percent load. It will optimize their voltage regulation and prolong their life.

Geezus, DON'T buy 'just enough'.....I got enough bytes under my belt to say so.


[Edited your post to address the points I wanted to]

I think you just stated what I stated, which is "buy what you need", but if you're saying it's OK to buy a 1500W PSU when you only use 425W, then I can't agree.

Of course it's not wise to buy at full tilt, but don't overdo it either. That's the point.

Otherwise I agree with everything you just said - including PC P&C being the best.

LOL....I didn't state that that much overkill was the point.

I certainly would not tell somebody to buy 1.5 Kwatts when their system was targeted at 600. I might suggest 800w or so.

Whatever, YMMV........just take my advice in stride, and don't underbuy.
To err is human, to err on the wrong side is being misadvised.

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Message 1076669 - Posted: 13 Feb 2011, 3:20:32 UTC - in response to Message 1076365.
Last modified: 13 Feb 2011, 3:21:32 UTC

I don't know if it is still relevant these days, but around five years ago, PSU-buying guides said to pay close attention to the 5v amperage, because a lot of cheaper units will have an astronomical 5v output to bring the overall capacity up, and not do much for 12v which is the one you need the most of.

That's not saying 5v isn't important, but it is something to look at and take into consideration......

Up until about 10yrs ago most PC's really only loaded the 3.3v and 5v rails so the 12v rail didn't need to be hefty at all.

Cheers.

Yeah how times and technology has changed, 12v is really important today and 5v will one day disappear from psus.

I doubt that the 5v rail will disappear any time soon as HDD's, USB ports and other hardware require that rail, if any rail disappears soon it'll be the 3.3v rail as motherboards will just breakdown the 5v rail to suit lower voltage requirements, but I won't hold my breath waiting for that to happen either. ;)

Cheers.

Here's something that if the Rumors are true, Will spank Yer rails but good, The GTX590, The story can be forund Here @ Nordic Hardware. Can You say 244-488w consumption all on one card? If this thing is made people may need not only a psu upgrade, but a case upgrade as well.

The GTX590, Note the two 8pin power plugs on the upper right and the 3 DVI ports on the left.



This is what EVGA was showing at CES 2011
http://www.geeks3d.com/20110108/ces-2011-evga-gtx-590-gemini-dual-gpu-card/

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Message 1076682 - Posted: 13 Feb 2011, 4:30:24 UTC - in response to Message 1076669.

I don't know if it is still relevant these days, but around five years ago, PSU-buying guides said to pay close attention to the 5v amperage, because a lot of cheaper units will have an astronomical 5v output to bring the overall capacity up, and not do much for 12v which is the one you need the most of.

That's not saying 5v isn't important, but it is something to look at and take into consideration......

Up until about 10yrs ago most PC's really only loaded the 3.3v and 5v rails so the 12v rail didn't need to be hefty at all.

Cheers.

Yeah how times and technology has changed, 12v is really important today and 5v will one day disappear from psus.

I doubt that the 5v rail will disappear any time soon as HDD's, USB ports and other hardware require that rail, if any rail disappears soon it'll be the 3.3v rail as motherboards will just breakdown the 5v rail to suit lower voltage requirements, but I won't hold my breath waiting for that to happen either. ;)

Cheers.

Here's something that if the Rumors are true, Will spank Yer rails but good, The GTX590, The story can be forund Here @ Nordic Hardware. Can You say 244-488w consumption all on one card? If this thing is made people may need not only a psu upgrade, but a case upgrade as well.

The GTX590, Note the two 8pin power plugs on the upper right and the 3 DVI ports on the left.



This is what EVGA was showing at CES 2011
http://www.geeks3d.com/20110108/ces-2011-evga-gtx-590-gemini-dual-gpu-card/

Truly awesome card!
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Message 1076693 - Posted: 13 Feb 2011, 5:13:28 UTC

I started to poke around some more on Power Supplies - Thinking I'll need a small sub-station
to power one of those 590s......

There is a very interesting article over on Tom's :

http://www.tomshardware.com/reviews/psu-manufacturer-oem,2729.html

Looks like Corsair and PC Power and cooling use some of the same OEMs, anyway I also
looked up the UL reference for Cosair:
http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/showpage.html?name=QQGQ2.E307858&ccnshorttitle=Power+Supplies,+Information+Technology+Equipment+Including+Electrical+Business+Equipment+-+Component&objid=1078378885&cfgid=1073741824&version=versionless&parent_id=1073787374&sequence=1

Bottom line is don't cheap out a power supply.
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Message 1076695 - Posted: 13 Feb 2011, 5:23:36 UTC - in response to Message 1076693.

Couldn't agree more DC.
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Message 1076701 - Posted: 13 Feb 2011, 5:34:59 UTC - in response to Message 1076693.

I started to poke around some more on Power Supplies - Thinking I'll need a small sub-station
to power one of those 590s......

There is a very interesting article over on Tom's :

http://www.tomshardware.com/reviews/psu-manufacturer-oem,2729.html

Looks like Corsair and PC Power and cooling use some of the same OEMs, anyway I also
looked up the UL reference for Cosair:
http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/showpage.html?name=QQGQ2.E307858&ccnshorttitle=Power+Supplies,+Information+Technology+Equipment+Including+Electrical+Business+Equipment+-+Component&objid=1078378885&cfgid=1073741824&version=versionless&parent_id=1073787374&sequence=1

Bottom line is don't cheap out a power supply.


Read any of my past posts about power supplies.
I have always recommended PC Power and Cooling Silencers.
Anything with a single 12v rail is better than without.

I learned that lesson the hard way a looooooooong time ago when I could not get a rig to boot that otherwise should have been fine.

Turns out I was using all the connectors on one rail.......half of the PSU was not being utilized. Took me a long time to sort that one out.

About 6 weeks......

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Message 1076715 - Posted: 13 Feb 2011, 6:50:02 UTC

I have always liked PCP&C ever since they first showed up (at least that I recall) a few years ago. They were expensive, but worth every penny from what I read and researched about them.

I recently discovered that I do enjoy the newer Corsairs, as well (even if they are a re-branded something else). I don't know what exactly my Rosewill is a re-brand of since that changes every now and then, but it has been rock solid for the four years I've had it running 24/7 at above 85% of it's capacity. Only the Stallion series though. Those "green" ones just fail too much (based on the reviews).

Funny part is that I bought my 600w Stallion at a time when there were a lot of recent reviews stating it would either be DOA or fail within 30 days, and well.. four years later and it's still going. No complaints from me.
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Message 1076852 - Posted: 13 Feb 2011, 16:50:10 UTC

Enermax has never once disappointed Me, not once. Of course their molex connectors could use some improvement and I told them so too, As do their fan grills for not being recessed enough on the Revolution85+ models.

Revolution85+ = not compatible with Cooler Master HAF cases... There's another reason I went with Silverstone for My unsponsored(yay!) HAF-932 project PC...
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Message 1076875 - Posted: 13 Feb 2011, 17:15:33 UTC

Back in my younger days I had problems with Power PC, Coolmax & OCZ. You only get one chance with me. Lost a mb to Coolmax and the other two burned out in less that a month. Went to Ultra about eight years ago and have never looked back. Right now I have it in all three of my systems and will be putting one in the system that I am building for my stepson. As I upgrade my PSUs for any reason, I always use the replaced one as a spare.

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Message 1076925 - Posted: 13 Feb 2011, 18:38:06 UTC - in response to Message 1076715.

I have always liked PCP&C ever since they first showed up (at least that I recall) a few years ago. They were expensive, but worth every penny from what I read and researched about them.


LOL They've been in business since 1984. ;-) They were the premiere provider of PSUs in the old Computer Shopper Magazine, and have always been the best-of-the-best. :-D

(No, I am not paid for by endorsements and I do not own stock in the company.)

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Message 1077026 - Posted: 14 Feb 2011, 1:16:12 UTC - in response to Message 1076925.

I have always liked PCP&C ever since they first showed up (at least that I recall) a few years ago. They were expensive, but worth every penny from what I read and researched about them.


LOL They've been in business since 1984. ;-) They were the premiere provider of PSUs in the old Computer Shopper Magazine, and have always been the best-of-the-best. :-D

(No, I am not paid for by endorsements and I do not own stock in the company.)


They drew my attention back when Alienware was still a small niche shop producing high end machines for gaming. Started looking into building a comparable machine and found out they used PC&C for their supplies. So the first chance I got I replaced my burnt out Antec for one and haven't looked back. When it comes times again (doesn't happen but every 4-5 years) that I need a new PSU the market will have changed again. But as of right now PC&C, Corsair, or Seasonic are the only ones I would strongly look at. Antec's would be a consideration in workstations if i wanted something a bit cheaper.

As far as PC&C being the premier brand, they were, but only because Seasonic produced them with their P12D platform. ;) Seasonic was the original king of the hill. Since then they have moved over to a different platform with the SKII OCZ owned line. Time will tell how well they match up to the original silencers.
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Message 1077053 - Posted: 14 Feb 2011, 3:11:21 UTC - in response to Message 1076925.

LOL They've been in business since 1984. ;-) They were the premiere provider of PSUs in the old Computer Shopper Magazine, and have always been the best-of-the-best. :-D

(No, I am not paid for by endorsements and I do not own stock in the company.)

Yeah, I first heard about them around the time when AMD went 64-bit. I think the reason I heard about them was because when all the other major brands were just getting to a massive 600 watts, they were hitting 1kW.. and people were laughing at how outrageous it was that anyone would ever need that much power.
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Message 1077056 - Posted: 14 Feb 2011, 3:19:20 UTC - in response to Message 1077053.

LOL They've been in business since 1984. ;-) They were the premiere provider of PSUs in the old Computer Shopper Magazine, and have always been the best-of-the-best. :-D

(No, I am not paid for by endorsements and I do not own stock in the company.)

Yeah, I first heard about them around the time when AMD went 64-bit. I think the reason I heard about them was because when all the other major brands were just getting to a massive 600 watts, they were hitting 1kW.. and people were laughing at how outrageous it was that anyone would ever need that much power.

They were ahead of the curve, But then they must have seen where the hardware was heading, somehow.
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Message 1077420 - Posted: 15 Feb 2011, 4:41:48 UTC

Thanks for all the info I got my PSU and got my machine up and running. I had to buy what I could afford which was the coolmaster
The Ultra just was under amperage on the single +12vail of 38a
while the Coolmaster single +12v rail at 60 amps.
The Ultra I got about 2008 so it lasted about or less than 3 years it did good until I got my gtx 460 card and within a month the 12v rail burnt up. I think the cool master will hold up better and it can take another gtx 460 card. I am back and crunching since the 10th 4 days later.

I have had this ULTRA 650 watt atx power supply output
+5v @32a and +3.3v @ 24a =190w
+12v @38a = 456w I think this was were it burned out not enough watts
-12v @0.6a = 7.2w
+5vsb @ 2.5a = 12.5w
My new one is
Cooler Master GX Series 750W ATX Power Supply RS750-ACAAE3-US
Sold by: TigerDirect, Inc.
single rail
+3.3v @ 25a and +5v @25a = 150w
+12v @ 60a = 720w notice the beefier wattage this plugs into my gtx460 card
-12v @ 0.5a = 6w
+5vsb @ 2.5a = 12.5w

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Message boards : Number crunching : power supply

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