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80mm fans instead of 120mm fans in case

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September 5, 2008 2:59:12 PM

hi when the case says it can support 3 optional 120mm fans...does that mean i cant fit in 80mm fans?

does it have to be 120mm? if i can put in 80mm will it be too much off a problem? do i need extra 'parts' to make em fit in the 120mm space?

thanks in advance

More about : 80mm fans 120mm fans case

September 5, 2008 3:15:32 PM

That all depends on the case, and where/how the fans are mounted. Just be advised that the 80mm fans will be noisier than the 120mm fans that push the same amount of air (CFM). I'd personaly just use the 120mm fans (they cost maybe $2 more).

http://www.frozencpu.com/products/7558/fan-454/Yate_Loo...
$7 (Yate Loon, excellent fans)
another good one would be the Scythe S-Flex fans, or if you want lots of cooling:
http://www.frozencpu.com/products/6941/fan-404/Cooler_M...
$19 (coolermaster 120mm, rated for 109.6 CFM)
September 5, 2008 3:27:47 PM

If your case has multiple size support, sure. But 80mm fans are way too loud
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a c 157 ) Power supply
September 5, 2008 3:32:24 PM

Fitting fans is not rocket science. You can always use zip ties to mount a smaller fan. If the case says 120mm fans, it means that there are pre-drilled mounting holes for 120mm fans.

That said, you do NOT want to use 80mm fans if there is a place for 120mm fans. A 80mm fan has 45% of the area of a 120mm fan, and will not cool nearly as well. They will spin much faster and be much noisier. At $7 for yate loons mentioned by IH8U, they are a no-brainer.


a c 131 ) Power supply
September 5, 2008 3:38:04 PM

Some cases have pre-drilled holes for multiple fan sizes. For maximum airflow and minimum noise, use the largest ones you can.
If you are limited by budget (maybe there's none), but happen to have some 80mm fans lying around, then you can use the zip ties geofelt mentioned to mount them where a 120mm fan would fit.
September 5, 2008 3:44:12 PM

Thinking about it, the CM 590 I have has pre-drill holes for 80/120/140mm fans for the top vents, rear, and side vent.

I would imagine the 690 has the same.
September 5, 2008 3:55:39 PM

always get the bigger fan if possible for higher airflow and lower noise.
!