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Upgrading System fans

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Last response: in Components
January 20, 2010 5:59:36 PM

I have a CM690 case and have 4 LED on/off Coolermaster fans

and 2 black fans that came with the case,

i am looking to upgrade to AC Ryan Blackfire4's

because of the higher CFM, so i thought that i would just replace my LED on/off Coolermaster fans. but would the increased CFM interfere with the two stock coolermaster fans that have a lower CFM?

Thanks in advance, rob

More about : upgrading system fans

a b ) Power supply
January 20, 2010 8:38:24 PM

There are two chains of thought. Higher airflow into the case or higher airflow out of the case... both have plus and minus points (positive & negative pressure) but to be honest as long as the case maintains a decent and unobstructed airflow through the case it waont make a huge difference.
January 20, 2010 9:44:32 PM

Brilliant cheers, well i was thinking...

i might get these xigmatek ones

because of the higher air flow compared to my coolermaster, although it is a littler lower compared to the AC ryan fans and plus they are more quiet! bonus!

I think i might just replace them all...

Thanks for the response though,

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a c 246 ) Power supply
January 20, 2010 9:58:17 PM

I took a look at the AC Ryan fan specifications. At 2000 rpm they are going to be making quite a bit of noise. The sweet spot for case fans is 1200 rpm. I would not go above 1600 rpm.

Here is a link to a very good web site with a lot of useful information about quiet pc fans:
January 20, 2010 11:10:16 PM

thats why i thought of these xigmatek fans but now i am confused because all the fans say how many watts they use, however i cant find how many watts the xigmatek fan takes???

i want to put them in my scythe fan controller and if i opt to replace them all, 2 in the mobo

Thanks again for the handy website

a c 144 ) Power supply
January 21, 2010 9:53:11 AM

Don't worry about the fan wattage. They don't use much power. I doubt if all four fans together use more than 1 amp at 12 volts.