165 watt psu

[killa62]

I have an old 165 watt psu (from an oem sony) that i want to take the fan out of.
I plan to power a headless m0n0wall system with 2 nics, NO VIDEO CARD, 128 mb of sdram, and a 1 ghz pentium 3 @ around 10% load.
That is all being powered.

so can a 165 watt psu without a fan power:
a mobo with everything onboard disabled (no lan, sound printer, usb, firewire)
2 pci nics
NO video card AT ALL, (not onboard, not pci, not agp)
a pent 3 1 ghz @ 10 pecent load
128 mb of ram
NO hard drive, just a cf drive that is used @ bootup

and can it power it 24/7/365 without overheating?

 

[amd ati FO SHO]

I have an old 165 watt psu (from an oem sony) that i want to take the fan out of.
I plan to power a headless m0n0wall system with 2 nics, NO VIDEO CARD, 128 mb of sdram, and a 1 ghz pentium 3 @ around 10% load.
That is all being powered.

so can a 165 watt psu without a fan power:
a mobo with everything onboard disabled (no lan, sound printer, usb, firewire)
2 pci nics
NO video card AT ALL, (not onboard, not pci, not agp)
a pent 3 1 ghz @ 10 pecent load
128 mb of ram
NO hard drive, just a cf drive that is used @ bootup

and can it power it 24/7/365 without overheating?

i don't think so, that psu wasn't designed to run fanless. it may even have a sensor, since theres no fan spinning it may just shutdown upon startup.

 

[killa62]

yes, but i took out the fan and it powers the system fine (then i turned it off because i dont want it to die)
the thing is, based on my hardware my

my processor will draw 30 watts at full load, mobo 10, both network cards together 10 at most, ram like 5 watts, and nothing else, not even a fan

that works out to be 55 watts at full load.
on MY guesstimate, it seems like a 165 watt psu can easliy power it passively.
i mean if it were 50 % efficient, it would only put out 25 watts of heat, which doesnt seem like much

 

[lithium726]

I wouldnt do that if i were you, its just not a good idea.

 

[buzzly]

It is not the wattage you draw, it is the fact that your PSU is not designed to run fanless that would be the problem.
There are a few fanless PSU available on the market, but they all sport hugh heatsinks to get the heat out.

 

[Bbq]

Not going to work properly. Just drill a 4 1/2 hole in the psu cover, slap on a super silent 120mm fan, and you won't notice it.

 

[GlobalFear]

Not going to work properly. Just drill a 4 1/2 hole in the psu cover, slap on a super silent 120mm fan, and you won't notice it.

Agreed. Throw on an 800 rpm scythe and you'll have to check if the thing is on. (I ahve to do this with my htpc because all of the power/activity lights are unplugged)

 

[Bbq]

Yeah, I did this with my P4 and the FSP 300w. The pc runs BT 24/7, and I sleep with it about 2 feet from my head, and it doesn't make any noise.

(This is with a scythe ninja and a nexus 120mm fan in the back, and a silverstone fm121 in the psu)

 

[IanG]

The psu will be adequate, but it's cooling that will be the issue. I helped a buddy out with his old Celeron 800, 128MB ram, cd burner which had been powered for 4 years by a 100W supply. 165 seems like overkill in comparison

 

[killa62]

anywhere to get this fan cheap?

this psu takes 80 mm fans,
the 120 mm fan will be bigger in all dimensions than my psu...
lol
any good recommendations for a cheap quiet 80mm fan?

 

[GlobalFear]

80mm fans tend not to be that quiet. Coolermaster has one that supposedly does 13 dba with 15 cfm. Not sure if I believe it though. My advice would be to disasseble the psu and mount it directly to the case. Take the psu enclosure and cutoff the backplate from the rest of the casing. Screw the backplate in and extend the 120v power leads. Mount a 120mm fan to the case it self.

Edit: What about 100mm or 92mm fans? Theres the Scythe SY1025SL12L with 14.0dBA and 28.20CFM

 

[killa62]

i dont have a case, its a naked pc
lol

 

[GlobalFear]

Make a naked psu to go with it

 

[killa62]

lol
so how do i mount the fan?

 

[GlobalFear]

zipties

Seriously, is the psu large enoguh for a 100 or 92mm fan?