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Passive FX-4300?

post #1 of 10
Thread Starter 
Looking to get a FX-4300 and underclock it as low as my motherboard will let me (either 1.4 or 1.6) and run it passive in back up rig. The most CPU intensive thing it'll see is Netflix, but I'm hoping to keep the entire PC passive (PSU is, case is, GPU is, hoping to make the CPU as well).

I have a Coolermaster Gemini aftermarket heatsink (kept my 8320 under 55C up to 4Ghz) but now my 8320 is under water so I'm hoping to be able to use that.

Anyone with a FX-4300 and an aftermarket heatsink similar to mine want to run a test for me biggrin.gif Drop the frequency and go watch Netflix or a 1080p video passively and see if it stays under 60C tongue.gif

Figure that's a long shot so any input would be awesome. thumb.gif
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post #2 of 10
I know this is the AMD section, but I just wanted to point out that you could get an i3 sandy or ivy with basic mobo. Shut off hyperthreading to save on heat output. Passive cooling an i3 with hyperthreading off seems more of a better option.
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post #3 of 10
Thread Starter 
I know, I just have a friend willing to sell me a 4300 for $50 and it'd be a huge leap up from the underclocked X2 215 in it now.

If I was going to buy something new I'd get a Celeron 1037u minitx dealio and run it on a case attached to the back of my monitor thumb.gif
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post #4 of 10
Oh wow thats a good deal. Then go for it! Maybe you could run the fan at like 500-800RPM? I doubt you will hear it...unless you put your ear in the case haha.
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post #5 of 10
Quote:
Originally Posted by Quesoblanco View Post

Oh wow thats a good deal. Then go for it! Maybe you could run the fan at like 500-800RPM? I doubt you will hear it...unless you put your ear in the case haha.

Yup that's what id do too.
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post #6 of 10
Thread Starter 
That's what my 215 is doing now, but it's an older chip so I was hoping I'd be able to ditch the fan if I went for something newer and ran it slower. I just want the bragging rights/cool factor of having a true 100% fanless PC TBH.
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post #7 of 10
try it passively and monitor temps.
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post #8 of 10

should work id just turn turbo core off and leave it stock

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post #9 of 10
Yea you shouldn't even have to underclock it that far for it to work. @3.0ghz it will probably run stable with as little as ~1.0V, full load that should be around 40-45W. That might be enough of a cut to do the trick.

The key to passive cooling is to create an environment that leverages convection to produce desirable currents. Try to use thermals to fight thermals by creating a stack effect in the case.

Look at an iMac DV for inspiration.. They used the heat from the CRT to cool the CPU/mobo etc. (don't use a CRT).
Edited by mdocod - 3/8/14 at 12:17am
     
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post #10 of 10
Quote:
Originally Posted by mdocod View Post

Yea you shouldn't even have to underclock it that far for it to work. @3.0ghz it will probably run stable with as little as ~1.0V, full load that should be around 40-45W. That might be enough of a cut to do the trick.

The key to passive cooling is to create an environment that leverages convection to produce desirable currents. Try to use thermals to fight thermals by creating a stack effect in the case.

Look at an iMac DV for inspiration.. They used the heat from the CRT to cool the CPU/mobo etc. (don't use a CRT).

Actually you'd probrably need 1.1v's or so to guarantee stability but many are indeed stable with 1.0v's used at 3.0GHz.

If I run my 4300 at or around the same suggested settings it does fine and even runs cool enough with a stock heatsink. If I use my Tt V1 cooler with it, of course it runs cooler and I can set it so the cooler itself is more or less completely silent.

I believe the 4300 will stay under 60C as long as your case has enough air moving through it to remove the heat it's gonna generate. That along with the cooler you have should let it run nice and cool while doing what you would want it to.
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