Question

65w power supply what can that support in a mini itx pc?

Asked by: iamuser

I'm building a mini-ITX box and the power supply that comes with it is only 65w power adapter and   So my question what processor/memory/ # of harddrives/ dvd drives can i use with a 65w power adapter?

unit is not gonna have a video card in it. It will use the built in intel 4500HD chip

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Asked On
2009-10-29 at 14:24:32ID24856358
Topics

Personal Computers

,

Power Supplies / UPS

,

Computer Motherboards

Participating Experts
4
Points
500
Comments
16

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Answers

 

by: akahanPosted on 2009-10-29 at 14:42:14ID: 25698564

Use the power supply calculator!  Here:  http://extreme.outervision.com/psucalculatorlite.jsp

 

by: garycasePosted on 2009-10-29 at 15:23:39ID: 25698850

Virtually all of the mini-ITX boards are designed for very low power consumption. For example, an Intel mini-ITX motherboard with an Atom CPU draws ~ 35w complete with an Atom CPU, SATA hard drive, and onboard video (The thermal design power of the Atom's is only 2.4 watts !!). The Via-based boards have similar consumption.

Any of these boards will work fine: http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&N=2010200446+1075720949&QksAutoSuggestion=&ShowDeactivatedMark=False&Configurator=&Subcategory=446&description=&Ntk=&CFG=&SpeTabStoreType=&srchInDesc=

The most power-hungry is probably the Asus Celeron 220 board -- the TDP of that CPU is 19w, so I'd expect the total power consumption to be ~ 55-60 watts. But any Atom-based board will have plenty of headroom with that power supply.

 

by: iamuserPosted on 2009-10-30 at 08:27:02ID: 25703902

the problem is I was thinking more on the lines of running maybe a dual 2 core chip with 4 gigs of ddr 2 ram and 2 sata drives. I'm assuming it's not going to work then

 

by: FlooringProPosted on 2009-10-30 at 08:42:41ID: 25704063

You are correct sir.  With the above numbers in mind, you would need either an 80 or 110W PSU.

 

by: garycasePosted on 2009-10-30 at 08:44:12ID: 25704083

No, that won't work.    The thermal design power of all Intel chips is shown on their site ... so it's fairly easy to compute the power requirements you need -- but the Core 2 Duo's all use substantially more power than you'll be able to provide with that power supply.

 

by: iamuserPosted on 2009-10-30 at 08:45:39ID: 25704097

thanks guys

 

by: iamuserPosted on 2009-10-30 at 08:47:06ID: 25704114

I'm trying to build a small NAS box for me to use. Micro ATX is too big for me, how much performance will I get from a dual core atom on the mini ITX box?

 

by: FlooringProPosted on 2009-10-30 at 08:50:08ID: 25704139

I'd imagine that if your simply using it as a NAS then the dual core atom would be more than sufficient, if not a bit of an overkill.

 

by: garycasePosted on 2009-10-30 at 09:01:06ID: 25704267

An Atom 330 should have plenty of power for simple NAS use -- it's not even clear you need the dual cores, but the TDP is still only 8 watts, so it'll still be well within your power supply's capabilities.

 

by: PCBONEZPosted on 2009-11-12 at 21:26:48ID: 25811594

A NAS only needs like 256-512MB RAM and you've spec'ed 4GB.
- Way over-kill and a big waste of PSU watts.
A NAS is basically a Router with some hard drives.
Doesn't do that much 'thinking' as it were so it doesn't need much RAM.
- For that matter it doesn't need that much CPU either.
An old Coppermine P3 would handle it nicely.
.
If you want a kick-butt NAS focus on Drive and LAN bandwidth.
That's what matters in a NAS and more 'computing power' won't make those faster.
.

 

by: garycasePosted on 2009-11-12 at 21:43:57ID: 25811640

Agree an old P3 has plenty of compute power for this -- but no P3 can touch the power requirements of an Atom (not to mention the motherboards weren't as efficient).

I certainly agree, however, that 4GB is WAY overkill.

 

by: PCBONEZPosted on 2009-11-12 at 22:59:23ID: 25811954

The point to bringing up P3 is that you don't need a C2D for a NAS.

 

by: garycasePosted on 2009-11-12 at 23:15:17ID: 25812010

Agree -- even a dual core Atom is overkill [as I gently noted above -- "... it's not even clear you need the dual cores ..."]

 

by: PCBONEZPosted on 2009-11-12 at 23:52:27ID: 25812098

Not what the asker is looking for but:
Mine is a uATX board with 6300ESB South-Bridge that runs a Laptop Pentium-M. [LV versions are 5 watts]
The 6300ESB supports a PCI-X slot populated by a 3Ware 9550 8-port.
And of course Giga-LAN and 1GB RAM. [Because I didn't have any 256MB DDR chips.]
Both ITOX and DFI made the mobo configuration but they are hard to find.
.

 

by: iamuserPosted on 2009-11-21 at 22:35:13ID: 25880954

The NAS is going to be the storage for my ESX server vms. Would an dual atom or single atom be okay?

 

by: garycasePosted on 2009-11-21 at 22:40:56ID: 25880963

Yes, either would be fine.    The point of our discussion above is to simply note that for what you want this box to do, you do not need much CPU power -- so I'd focus on low CPU power consumption and high network bandwidth (and fast drives).

20120131-EE-VQP-002

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