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Topic Title: POWER REQUIREMENTS FOR ASUS M2N32 WS Professional system
Topic Summary: how to calculate the Wattage required
Created On: 04/13/2007 03:15 AM
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 04/13/2007 03:15 AM
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MRC3
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the system is on the ASUS M2N32 WS Professional mother board.
http://www.zipzoomfly.com/jsp/...sp?ProductCode=247086

using the AMD X2 6000 AM2 socket,
http://www.zipzoomfly.com/jsp/...jsp?ProductCode=80743

It will be used for CADAM in the home construction business of my neighbor's son-in-law,
and to walk customers though the virtual tours of the homes on the system.

two Seagate HDD's,
Seagate 7200.10

two OPTICAL DRIVES,

one floppy,

one not too high end video card,
like this one;
http://www.zipzoomfly.com/jsp/...sp?ProductCode=322827


Finally the memory will be 4 GIG's of Crucial Ballistic DDR2 PC2-5300
http://www.crucial.com/store/m...poid=3DF4159BA5CA7304

We were thinking about this Enermax P/S,
Enermax EIN720AWT Infiniti 720W Power Supply
http://www.zipzoomfly.com/jsp/...sp?ProductCode=270350
..

If he is going to use two monitors,
will that be an additional demand for power from the system power supply?

MDWILLINGTON, and others ,, what do you think?
 04/13/2007 04:15 PM
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MSfree
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Sorry, 720W for such a system is simply ridiculous. The system as you are planning it, will not draw more than around 250W under absolute full throttle from the power outlet and around 100W when idle. This means, your power supply must deliver around 180W to the components at full throttle and approx. 70W at idle, assuming an avarage PSU efficiency of 70%.

When a 720W PSU is are loaded with as little as 70W, the efficiency will drop dramatically to around 50%, even if they are labeled "80+". This results in additional heat being generated, which adds to your electricity bill and to the noise level due to increased cooling demands.

A 250W PSU would be completely sufficient. But hardly any shop stocks PSUs below 350W anymore (people seem to think big like you nowadays), this is, what I would opt for.
 04/13/2007 05:29 PM
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MRC3
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Originally posted by: MSfreeSorry, 720W for such a system is simply ridiculous. The system as you are planning it, will not draw more than around 250W under absolute full throttle from the power outlet and around 100W when idle. This means, your power supply must deliver around 180W to the components at full throttle and approx. 70W at idle, assuming an avarage PSU efficiency of 70%.When a 720W PSU is are loaded with as little as 70W, the efficiency will drop dramatically to around 50%, even if they are labeled "80+". This results in additional heat being generated, which adds to your electricity bill and to the noise level due to increased cooling demands.A 250W PSU would be completely sufficient. But hardly any shop stocks PSUs below 350W anymore (people seem to think big like you nowadays), this is, what I would opt for.


I'm waiting to hear from the EXPERTS.
BECAUSE this power calculator is free and i don't know whether it is accurate.

and it says more than you do.

http://www.extreme.outervision...psucalculatorlite.jsp

..
 04/13/2007 05:35 PM
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MRC3
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Recommended PSU Wattage:501 WATTS * Power Supply Wattage Results

THAT'S WHAT IT SAYS.
 04/13/2007 11:49 PM
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MU_Engineer
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I ran that power supply sizing tool on your system and got about 377 watts full-load. However, you don't need a NVIDIA 7950GT KO for CAD. An inexpensive dual-DVI video card like an NVIDIA 7300 or ATi x1300 will be much less expensive and work just as well. And it will consume maybe 35 watts instead of over 100 W.

People use such large power supplies like the 750 W unit because they have an overclocked CPU and two graphics cards in SLi/CrossFire. GPUs eat a lot of watts, but a regular desktop with a lower-power GPU really doesn't, even if it has a stout CPU like the 6000+.

-------------------------
 04/14/2007 01:47 AM
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MRC3
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the programs that he runs for the CADAM are also going to run the virtual tours for the plans for the houses.

it's all he can do right now on the current system to get it to work.

Those are proprietary programs that are very large,
as large as loading up windows either vista or XP PRO.

i appreciate your feed back.
thanks.

let me see if i can refine the list of hardware and see what difference it may make.
 04/15/2007 10:38 AM
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MSfree
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BECAUSE this power calculator is free and i don't know whether it is accurate.
and it says more than you do.

http://www.extreme.outervision...culatorlite.jsp

..

I have not found a single calculator on the net, that is not extremely exaggerating. It computes for my computer a recomended PSU Size of 188W. I have conductd a large series of mesurements on my system with oscyloscopes, multimeters and wattmeters. As a result, my system draws 85W from the power outlet at absolute peakload which corresponds to only 65W that the power supply has to deliver to the components, the rest goes up in heat in the power supply itself.

My experience with these calculators ist, to take half of the recommended value for your power supply. I have a feeling, that these computers are sponsored by PSU manufactures.
 04/15/2007 03:46 PM
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MRC3
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Roger that.
 04/17/2007 04:31 AM
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MRC3
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We settled on a modular power supply made by HYPER;

the HYPER TYPE " R " 580 Watt.
 04/19/2007 01:01 AM
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MRC3
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now it might be the Enermax ELT620AWT-NON ROHS Liberty 620W
http://www.zipzoomfly.com/jsp/...uctCode=270348&ps=ho7
..
# Full compliance with the highest standard to desktop power requirements. Split 12V rails provide most stable current to CPU, GPU , MB and drives.
# Full support of Dual Core systems (incl. Pentium D EE and Athlon 64 X2) & Dual CPU systems.
# Convertible design to power up ATX/BTX systems and support dual CPU entry-level server/workstation.
# PF value up to 0.99 to provide stable and clean power under 100-240VAC by auto switching.
# High efficiency of about 80% under wide load range (30-100%) minimizes your electricity bill.
# Special design 12cm fan combines silence and cooling by intelligent speed control.
# Protected by OCP, OVP, UVP, OLP, SCP, OTP for maximum safety. Full rated power under 0-40 o C/32-104 o F ambient temp.
# Smarter cable choice and better cable routing for a neat and tidy case.
# Unique 4-pin Molex + SATA connectors in pairs give you free choice on using either PATA or SATA devices.
# Support of Dual PCI-E graphics cards, SLI or CrossFire.
# Toughest EMI shielding protects your system and near-by appliances.
..
 05/01/2007 02:11 AM
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MRC3
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Originally posted by: MRC3

now it might be the Enermax ELT620AWT-NON ROHS Liberty 620W

http://www.zipzoomfly.com/jsp/...e=270348&ps=ho7

..

# Full compliance with the highest standard to desktop power requirements. Split 12V rails provide most stable current to CPU, GPU , MB and drives.

# Full support of Dual Core systems (incl. Pentium D EE and Athlon 64 X2) & Dual CPU systems.

# Convertible design to power up ATX/BTX systems and support dual CPU entry-level server/workstation.

# PF value up to 0.99 to provide stable and clean power under 100-240VAC by auto switching.

# High efficiency of about 80% under wide load range (30-100%) minimizes your electricity bill.

# Special design 12cm fan combines silence and cooling by intelligent speed control.

# Protected by OCP, MVP, UVP, OLP, SCP, OTP for maximum safety. Full rated power under 0-40 o C/32-104 o F ambient temp.

# Smarter cable choice and better cable routing for a neat and tidy case.

# Unique 4-pin Molex + SATA connectors in pairs give you free choice on using either PATA or SATA devices.

# Support of Dual PCI-E graphics cards, SLI or CrossFire.

# Toughest EMI shielding protects your system and near-by appliances.

..


the Enermax is the one that was bought.
 05/01/2007 04:01 PM
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mckennma
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Specifications Back to Top
AC Input 100-240VAC 50-60Hz 9.5 -4A Active PFC
DC Output +3.3V +5V +12V1 +12V2 -12V +5Vsb Total Power
28A 32A 22A 22A 0.6A 3A 620W
170W 432W( 36A ) 7.2W 15W
597.8W 22.2W

+3.3V and +5V limited to 170W
Combined 12V limited to 36A

Should be fine.

-------------------------
Tyan Thunder K8WE
Dual AMD 280 Opterons
8GB NUMA enabled DDR333 2.5-3-3-7 RAM
PCI-X SCSI RAID
http://69.14.190.80
 05/02/2007 11:03 PM
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LAKELANIERBC
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Joined: 04/27/2007

Just built that very set up. I used a 850 watt thermaltake modular. System is blazing fast but runs hot with stock cooler. I am putting on a Zalman cooler for the 6000+ am2 cpu. You need the later atx power supplies for the pci express power plug on most graphics cards. Make sure and get the latest bios from ASUS!
 05/03/2007 12:43 PM
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Bill100
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Joined: 04/26/2006

Extra screens dont drain the psu power since they have thier own power coming from the wall.

Also the psu I believe will only draw what power it need from the wall so if you had a 1000 watt psu and your system only use 600watts the psu will only draw 600 watts from the wall. BUT the energy efficiency is lower at low loads.
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