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 Post subject: Fan swap on FSP Aurum 700W 80 Plus Gold
PostPosted: Wed Mar 30, 2011 10:14 am 
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Joined: Fri Mar 18, 2011 8:54 am
Posts: 13
I'm after a little bit of advise please.

I recently got gifted a FSP Aurum 700W 80 Plus Gold PSU which I am happy with in every respect apart from noise. I thought FSP would go with a non aggressive fan profile for this considering the most it will ever need to dissipate as heat is just 70W.

I have an Antec P183 so the PSU is mounted in the separate chamber, along with 3 hard drives and a slow moving (700 rpm) fan.

Anyway I've done some temperature measurement and the difference between Internal and External is just 1 degree Centigrade at idle (130W) rising to 4 degrees at load (350W). The lower chamber warms up a touch while at load to around 3 degrees extra over idle temperature. I don't know much about temperature differences other than those we see on SPCR PSU reviews but I would say these temperature differences are pretty good.

The original fan as far as I can tell is a 120mm x 25mm variant Protechnic MGA 12012HF-A25 which has a maximum rotational speed of a frankly ridiculous 2400rpm and output of 84.8cfm.

So what should I go with? Something around 2,000 or maybe more towards 1,600 rpm?

What's the best alternative to the 1600rpm S-Flex these days? I've already modded an OCZ/FSP SXS 600W with a S-Flex 1600.

Many thanks for your help.

Teal'c


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 Post subject: Re: Fan swap on FSP Aurum 700W 80 Plus Gold
PostPosted: Thu Mar 31, 2011 9:57 am 
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Joined: Wed Jun 13, 2007 10:12 am
Posts: 2744
Location: ITALY
Enermax Magma.

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Luca


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 Post subject: Re: Fan swap on FSP Aurum 700W 80 Plus Gold
PostPosted: Thu Mar 31, 2011 10:16 am 
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Joined: Fri Aug 05, 2005 3:29 am
Posts: 1119
Location: UK
You almost certainly need a fan with a low start voltage, but probably not 2400 rpm max. Suggest the Scythe Kama Flow 2 1900 rpm SP1225FDB12H model as reviewed here http://www.xbitlabs.com/articles/coolers/display/120mm-fan-roundup-2_10.html#sect0.


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 Post subject: Re: Fan swap on FSP Aurum 700W 80 Plus Gold
PostPosted: Thu Mar 31, 2011 11:27 pm 
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Joined: Fri Mar 18, 2011 8:54 am
Posts: 13
Thanks guys.

I'm going with the Enermax Magma simply because I can't seem to source the Kama Flow 2 in the UK and the S-flex are nowhere to be seen. The Magma is quite a bit lower in rpm so I'm going to monitor temperature differences again and if it's uncomfortably high I will look towards a 1700-1800rpm fan.


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 Post subject: Re: Fan swap on FSP Aurum 700W 80 Plus Gold
PostPosted: Fri Apr 01, 2011 12:27 am 
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Joined: Fri Aug 05, 2005 3:29 am
Posts: 1119
Location: UK
Yes, some models of Scythe fan can be hard to find in the UK. I have bought Scythe fans from Euro/UK traders such as this one http://www.comeuro.net/webshop/product.php?productid=134346&cat=8659&page=6, partly because the prices even with delivery have been quite reasonable.


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 Post subject: Re: Fan swap on FSP Aurum 700W 80 Plus Gold
PostPosted: Fri Apr 01, 2011 12:37 am 
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Joined: Wed Jun 13, 2007 10:12 am
Posts: 2744
Location: ITALY
Tealc99 wrote:
TThe Magma is quite a bit lower in rpm so I'm going to monitor temperature differences again and if it's uncomfortably high I will look towards a 1700-1800rpm fan.

The Magma is rated to give more CFM than almost any 1600-1900rpm low noise fan (including those two Scythe), and it's rated at 85°C (the other fans are not, the most resilient Scythe should be the Gentle Typhoon rated at 60°C but with halved MTBF, 55.000hrs instead of 100.000hrs): as a matter of fact, the Magma is the fan used in renowned Enermax PSUs, so I'm fairly confident you should not have any issue with it, for that particular job.

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Luca


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 Post subject: Re: Fan swap on FSP Aurum 700W 80 Plus Gold
PostPosted: Fri Apr 08, 2011 1:58 am 
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Joined: Fri Mar 18, 2011 8:54 am
Posts: 13
Went ahead and did the mod with the Magma.

Before.
Image

After.
Image

It looks much nicer now. Speeds are <1000rpm which is great. I ran the speed sense wire into the case but the only fan header available that monitors speed is tucked underneath the bottom PCI-E slot, why oh why do motherboard designers stick the fan headers in stupid places.


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