Power Supply 500W FlexATX PSU

[jeshikat]

For science!

 

[HeroXLazer]

For science!

For the death of your wallet!

 

[EdZ]

lol, I've risked far more expensive hardware.

Like purposely trying to cause a PSU to overheat and shutdown while connected to a $250 motherboard and $600 CPU.

We in the SFF community know how to really get an adrenaline rush!

 

[Ceros_X]

For science!

For the lulz

 

[jeshikat]

Well I made a dumb mistake. I was under the impression that this was a semi-fanless unit but it's not, and that 40mm fan is SUPER annoying!

So I'll probably be sending it back.

 

[HeroXLazer]

Well I made a dumb mistake. I was under the impression that this was a semi-fanless unit but it's not, and that 40mm fan is SUPER annoying!

So I'll probably be sending it back.

You could use a different fan, maybe.

 

[jeshikat]

It appears to use a PWM fan though, which really limits the options.

 

[HeroXLazer]

It appears to use a PWM fan though, which really limits the options.

https://www.directron.com/ec4015sh12bp.html

 

[jeshikat]

The RPM range is pretty similar, so I don't think it'd be any quieter. Noctua doesn't have a PWM 40mm currently, they do have one in development but it's 20mm thick, so it won't fit in here.

I'm just going to give up on it and figure out something else for Jolokia until the HDPLEX 300W AC-DC is out.

 

[HeroXLazer]

The RPM range is pretty similar, so I don't think it'd be any quieter. Noctua doesn't have a PWM 40mm currently, they do have one in development but it's 20mm thick, so it won't fit in here.

I'm just going to give up on it and figure out something else for Jolokia until the HDPLEX 300W AC-DC is out.

I'll take that FSP PSU if you don't want it.

 

[jeshikat]

It's Amazon, so I can get my money back. Unless you want to buy it from me for $130 + PayPal fee + shipping. I assume you'll pass on that though

 

[HeroXLazer]

It's Amazon, so I can get my money back. Unless you want to buy it from me for $130 + PayPal fee + shipping. I assume you'll pass on that though

No, I'm good... but... if you don't get a refund, just send it my way. I'm just kidding.

 

[jeshikat]

Well, I'm glad I didn't just send it back right away. I had left it running for about 30 minutes today while I was testing something. Then afterwards, I noticed that the really, really annoying whine I was hearing when I first tried it Wednesday is no longer there.

I think maybe the bearings needed some break-in time. Whatever the cause, it now performs surprisingly well at idle, and even under CPU load with my 120W TDP Xeon.

If I could find a 40x15mm PWM fan with FDB (or even an improved sleeve bearing) I think it'd actually be close to inaudible in all but the most quiet environments.

 

[Kmpkt]

What CFM do you need the fan to push to keep the rated cooling? Was thinking this might be an upgrade?

http://www.digikey.ca/product-detail/en/delta-electronics/AFB0412HHB/603-1005-ND/1014336

 

[iFreilicht]

From the Documentation:

Important: This power supply needs airflow of 11.5CFM for running at maximum load condition. If system provides airflow less than 11.5 CFM, output power must be de-rated depending on internal components temperature rise.

The fan you linked seems to achieve that at just 8300RPM, which is quite cool.

 

[ricochet]

The fan you linked seems to achieve that at just 8300RPM, which is quite cool.

But at 32 dB(A)! Deltas can be loud, as they tend to have a unique pitch/sound signature that disturbs some peoples ears and makes them sound louder than they really are. But they sure are workhorses and seem to last forever!

 

[jeshikat]

That model Delta is ball-bearing and 2-wire.

Annoyingly there are FDB 40mm fans available but all the ones I've seen are 20mm thick

 

[jeshikat]

Bah, it will power off if it doesn't detect the fan. So all the 2-wire fans are out without rigging up some kind of fake tach signal.

 

[iFreilicht]

Bah, it will power off if it doesn't detect the fan.

At least that was to be suspected. Maybe the tach signal could be faked with just +5V or GND connected permanently? Either way, I don't know whether the PSU can use voltage-controlled fans anyway, so 3pin might be the least you can do.

 

[jeshikat]

Oh yeah, it's a PWM fan. So I guess fan replacement on this is just not going to happen.