Run a Duron 800 fanless?

[MCS]

Would it be mad to even consider running a Duron 800 with just a large(ish) heatsink? Here is a link to the case it is in, which is an entirely uncooled Micro ATX case. You can't really see in the picture but there is a space at the rear behind the CPU for a 60mm fan. If necessary I could perhaps install a quiet fan there blowing IN. This is the heatsink I am using. The problem is I built this as a living room PC and the fan is very whiny and noisy, and is totally unacceptable. I am guessing the CPU could peak 60C without a fan? But would it be stable? Could I risk frying it just by even trying?

NB - the rated power consumption for the 800 is 31.8W typical and 35.4W max, with a max tolerance temp of 90C.

 

[Nocturnal]

i honestly wouldnt try running a duron without a fan. use a stock hsf from amd if you cant find one. they're usually very cheap any fan will do. just dont run it without the fan

 

[MadRat]

You'll need around 2500cm.sq. of aluminum surface area to cool it. That would be a pretty large heatsink.

 

[VicLavigne]

If you want a really quiet system without any fans, go for a VIA C3 cpu. You can use heatsink only.

Of course, this cpu isn't very powerful.

All AMD processors need fans on their cpu's..... fans, or watercooling.

 

[theplanb]

I use Duron850 and I don't think it would work.. I tried to run it fanless with a huge anodizes aluminium heatsink.. it went up to about 60 in about I don't know... 15-20 seconds? then I hit the power button

 

[MCS]

So far then, a resounding "no".

 

[wepopfresh]

No.

I had a 700 that the fan jammed up on and it ran without a fan for a little over 2 hours. I checked the temp and it was at 179 f. I fixed the fan, and the system still runs fine today.
I don't think i would do it on purpose though.

 

[MCS]

<< I had a 700 that the fan jammed up on and it ran without a fan for a little over 2 hours. I checked the temp and it was at 179 f. I fixed the fan, and the system still runs fine today. >>



Which heatsink were you using? The one I have is rated up to an Athlon 1.4Ghz.

 

[wepopfresh]

just a no name piece of crap, these were low-budget office computers.

 

[MCS]

<< just a no name piece of crap, these were low-budget office computers. >>



So then perhaps with a better heatsink the chance of success would be higher?

 

[Athlon4all]

Well, one time my fan failed on my current rig (a Duron 800) and the temps eventually climbed to 90C. So the answer is, nope.

 

[wepopfresh]

What would be the benefit of trying?

 

[Athlon4all]

<< What would be the benefit of trying? >>

To have a quieter system

 

[MCS]

<< The problem is I built this as a living room PC and the fan is very whiny and noisy, and is totally unacceptable. >>



To quote myself in my original post

I basically want to make this system as quiet as I possibly can. I cannot replace the fan with a normal size 60mm fan which is quieter because there is not enough clearance in the case.

 

[nortexoid]

i'd suggest dropping an extremely quiet low profile 60mm (or 80mm+shroud) fan onto it...u either won't be able to hear it at all, or u won't be able to hear it over the psu fan...i've done a few like this...extremely quiet even with a fan and certainly a lot less work than tryign to build a fanless system...i wouldn't get a fan spinning over 4k rpm

 

[Daxxax]

try to find a quiter fan.

 

[FishTankX]

Pal 8045+One of the Pabst 18NGL (Is that the right model #?) is almost silent. I bet you *might* be able to run it fanless with a Pal 8045 and the powersupply fan directly overhead.

 

[darth maul]

If this is for a living room pc then speed isn't a huge issue is it? You can try fan less, and lower the multiplier to 6 what ever is the lowest for the motherboard. And then drop the voltage10% or more. Of course that is assuming that there is a chance that your motherboard has voltage and multiplier settings.

 

[Bovinicus]

Nope, I wouldn't do it. You can always get a really quiet fan. That will be far better than no fan. Also, 60C will be perfectly stable. I ran a system with temps of nearly 70C under full load.

 

[Adul]

<< Nope, I wouldn't do it. You can always get a really quiet fan. That will be far better than no fan. Also, 60C will be perfectly stable. I ran a system with temps of nearly 70C under full load. >>



but the life of the cpu gets shorten the hotter it stays at.

I would try and see if you can underclock it and lower the voltage, or maybe even try the 1 ghz version of the duron since it runs cooler and underclock that.

 

[Windogg]

Like many people have said running a Duron with out a fan in a poorly ventalated case is a bad idea. Perhaps a nice Coolermaster heatsink. They are very inexpensive and certain models have very quiet fans around 30dB which is the same noise factor as the stock Intel heatsink up 1Ghz. I have heard of people using the 1Ghz Intel heatsink on lowend TBirds soit should be more than sufficient for a 850Mhz Duron. That heatsink is also very quiet. With so many people not using the stock heatsink, you might be able to pick one up cheap.

Windogg

 

[MCS]

So not even with an exhaust fan blowing in on the heatsink? I guess it would work at first but the heat would keep building up.

Looks like a new cooler is the way to go. I selected the Akasa cooler because it was very cheap and thus I assumed it would be quiet.

The board, by the way, is a SiS730 mATX PC Chips and does not have multiplier/voltage adjust, only 100/133 FSB. I could pencil the bridges but I am not familiar at this stage which options I have on the Duron 800. I presume you cannot go below 1.6V with the bridges?

 

[sparks]

You should be able to do it. I am currently running a TBird 1GHz fanless with an Alpha 8045, the PSU fan sits less than 1 inch away from the heatsink. I run Seti@home 24/7 and have had no problems. I am unsure of the cpu temp, tho, because for some strange reason the MSI KM133 board dosen't have a diode (I've tried MBM and others).

 

[MCS]

<< You should be able to do it. I am currently running a TBird 1GHz fanless with an Alpha 8045, the PSU fan sits less than 1 inch away from the heatsink. I run Seti@home 24/7 and have had no problems. I am unsure of the cpu temp, tho, because for some strange reason the MSI KM133 board dosen't have a diode (I've tried MBM and others). >>



The Alpha 8045 obviously has more cooling prowess than the Akasa 765 I am using however my chip is 200Mhz slower and at 1.6V. Are you running at the stock 1.75V? I assume you are using an Enermax or dual fan PSU...

Is the Alpha very hot to the touch?

 

[splice]

You probably could.

I tried running my Duron 1000 fanless with a PAL8045 Idle temps in the BIOS screen where right around 47C case temp was 25C.... the heatsink was pretty hot though. I decided to put on a low RPM 80mm fan on and now temps are 42C under full load and that is the only fan in the case, besides the two in the PS. It's just about silent.