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  #1 (permalink)  
Old 12th July, 2006, 05:05 PM
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Power Supply

So I just thought of another issue. I have not decided on a power supply yet. I was thinking about the SeaSonic 5 or 600 watt would be a good range but that was before I Started adding all of the extra power draws. I will be running:
7 120mm fans
1 80mm fan
4 or 6 cold cathode 12” lights.
1 12v pump rated @ 24 watts

On top of the Dual Core proc and possibly SLI videocards.

Will this be enough power to overclock reliably? Should I get the thermaltake 750 watt power supply? Would a second power supply for the fans and pump be better?
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Old 12th July, 2006, 07:01 PM
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Wow 7 120mm fans!!???
How come so many?
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Old 12th July, 2006, 07:22 PM
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Well I have one in the front of the case to cool the hard drives. Then I have two 3-Fan Radiators. There will also be an 80mm fan in the blowhole position that will come on as needed.
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Old 12th July, 2006, 07:48 PM
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Cool... literally!
How about some pics.
It sounds like you got a monster server going there.
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Old 12th July, 2006, 08:18 PM
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Well I am in the parts accumulation stage right now. I have the water-cooling related parts, and the case and motherboard so far. Fans, fan controller, lights, UV dyes and paints are on their way. Nothing is assembled yet. I will wait a bit on the proc, ram, Vid cards and the HDs with the idea that prices will fall by the time I am ready for them. It seems like it is time for the Power supply now though so I want to make sure I am covered for all my extra gadgets and still have super stable power to overclock.
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Old 12th July, 2006, 08:18 PM
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Quote:
Originally Posted by BobRoss
So I just thought of another issue. I have not decided on a power supply yet. I was thinking about the SeaSonic 5 or 600 watt would be a good range but that was before I Started adding all of the extra power draws. I will be running:
7 120mm fans
1 80mm fan
4 or 6 cold cathode 12” lights.
1 12v pump rated @ 24 watts

On top of the Dual Core proc and possibly SLI videocards.

Will this be enough power to overclock reliably? Should I get the thermaltake 750 watt power supply? Would a second power supply for the fans and pump be better?
You should get a quad or penta-railed PSU to properly meet your needs. Because of how these units are wired, try to get one with 20a or more per 12v line, as you will find that this may be needed when running a high-clocked dualcore system with one card, nevermind 2.

The Mushkin 650w PSU looks to be a good'un. I'll hopefully have one in my hands shortly, gratis!
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Old 12th July, 2006, 08:50 PM
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20a seems like a tall order. Most are 16-18 that I have seen.
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Old 12th July, 2006, 09:01 PM
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why i said something.
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Old 12th July, 2006, 09:35 PM
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Yeah, I guess you are right Cadaveca. That is clearly the right power supply. Thanks for the tip!
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Old 12th July, 2006, 09:47 PM
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Kentsfield and quadcores from AMD(i imagine), are gonna require some beefy psu's. In aiming to get the most for your dollar, overbuying a psu can do you no wrong. Underbuying, however, can lead to system instability, and just might fry your hardware.

Each brand name out there has good an bad models, so this makes it even harder to choose. The Mushkin gets my vote for it's ability to merge the sets of 12v rails when one becomes under-powered, and when running dualcore and dual gpu, this is an issue, never mind with quad systems.

It's more than a psu being simply "quad rail" tho. how the power distrubuted to the system is split between the rails also is of great importance. For some of those PSU's out there, although there are 4 rails, there is not one for each vidcard, one for cpu, and one for periphrials, as one might imagine, but most often one for devices, and a cpu; sometimes cpu and one vid get stuck together. In cases which this might happen, most PSU manuals will direct you connect the second card to two of the molex connectors via an adapter, even tho they have supplied 2 pci-e connectors natively.

Food for thought.
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Old 12th July, 2006, 09:48 PM
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do you know how much amps your fans need? some needs several amps and some 100mA or less.

probably your pump needs more than 24W at startup
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Old 12th July, 2006, 10:24 PM
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The fans claim to be 4.56W 0.38A
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Old 13th July, 2006, 08:43 AM
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Quote:
Originally Posted by BobRoss
20a seems like a tall order.
Yup, there's a reason for there being no more than 20A available per line. Depending where in the world you are, it's called UL 60950, or BS EN 60950:2001 or IEC 60950. It limits the maximum available power to 240VA for safety reasons. Generally, although a PSU might claim to have multiple 12V lines, there is only one converter to take mains power and convert it down to 12V. Thus, the "independant" lines are not truely independant, but have their own seperate filtering components.

8 Fans at 0.38A will draw 3.04A from the 12V line, but that is a worst case stall current rather than their normal draw. The pump requires 2A, so you're up at the 5A point during startup. No idea to the power requirements for your inverters though.
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Old 13th July, 2006, 09:41 AM
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Looking at the system you want to run, i'd say 550W is the minimum you'd need. As for the rest of the details, i'm not too sure.
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Old 13th July, 2006, 02:03 PM
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4.56W each . put a second psu for fans, lights, pump and maybe some drives into your case
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Old 15th July, 2006, 01:09 AM
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hey bobross lets see a picture of that
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Old 17th July, 2006, 05:35 PM
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Quote:
Originally Posted by bonesaw
hey bobross lets see a picture of that
Not much to see yet. Just a pile of parts.
More of the pieces are due to arrive later this week and I will probably do a test fit so I will take some pics then.
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Old 17th July, 2006, 09:25 PM
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Well that Mushkin PSU showed up today ahead of schedule. Really nice packaging! I hope it does the job. It sure looks nice anyway. :-)

EDIT: Thought I would post some pics .
Attached Thumbnails
Power Supply-m1.jpg   Power Supply-m2.jpg   Power Supply-m3.jpg  
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Last edited by BobRoss; 18th July, 2006 at 04:00 PM.
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