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Case Airflow question

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Thomas73

Thomas73

New Member
Joined
Jul 19, 2010
Location
Singapore
My case is a CM 690 Pure & my PSU is bottom mounted with the PSU intake fan facing down.I have 2 front intake,1 side intake,1 bottom intake,2 top exhaust & 1 rear exhaust fan(all are CM 120mm 2000rpm 90cfm fans)Is the configuration correct,or I can stll improve airflow performance?By the way I have a CM V8 which is mounted to draw air in/out from front to rear.:bang head
 
Last edited:
Thomas73, I split your question out of ChanceCoats thread as your subject really needed it's own thread for this to be discussed. Please do not be afraid to post your own thread for questions when they aren't directly related instead of posting it in someone else's thread.

muddocktor

As for your question, I would leave the airflow across your cooler as it (front to back) but you might play around with the case fans and see if you get any better temps. I would guess you might see a hair better temps with 1 more fan as an exhaust, but that's something you need to just play with and see.
 
Better exhaust, I'm pretty sure the numbers on those CM fans are bogus...what're the fan sizes?
 
Drop some fan pics. Certain types of fans don't provide any pressure and you cant depend on ratings of CFM without pressure ratings. I believe this was mentioned above.
 
Its definitely not bogus,its Sickle Flow120mm 2000rpm/90cfm led fans,it has 9 sickle shaped blades as compared to 7 blades on a standard 120mm fan
standard 120mm fan
http://photos-e.ak.fbcdn.net/hphoto...73239315_100000840494694_151324_2119220_a.jpg

CM SF 2000 rpm I used
http://photos-h.ak.fbcdn.net/hphoto...69905982_100000840494694_151323_2634289_s.jpg

My case,I have 2 front intake,1 side intake,1 bottom intake,2 top exhaust & 1 rear exhaust fan

http://photos-f.ak.fbcdn.net/hphoto...43239218_100000840494694_151341_6262364_s.jpg
 
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I think U already did right. I also use the CM690 but I'm not using all of the fan slot, I'm just using 1 front intake 1 side intake and 1 rear exhaust. for the intake both is use Vantec 12cm led fan, 2000rpm too and since I'm using only 1 exhaust so I'm using bigger cfm, that is Scythe Kaze (Actually have Delta but its make me can't hear my own mind :p ).

As for U, if U use big CFM in rear U might not need the top exhaust since the air will be sucked by the rear. If U won't change I think all is fine.
 
Thomas73 said:
Its definitely not bogus,its Sickle Flow120mm 2000rpm/90cfm led fans,it has 9 sickle shaped blades as compared to 7 blades on a standard 120mm fan
standard 120mm fan
http://photos-e.ak.fbcdn.net/hphoto...73239315_100000840494694_151324_2119220_a.jpg

CM SF 2000 rpm I used
http://photos-h.ak.fbcdn.net/hphoto...69905982_100000840494694_151323_2634289_s.jpg

My case,I have 2 front intake,1 side intake,1 bottom intake,2 top exhaust & 1 rear exhaust fan

http://photos-f.ak.fbcdn.net/hphoto...43239218_100000840494694_151341_6262364_s.jpg
Click to expand...

A fan can be 100CFM and do a worse job than a 50-70CFM in many cases. From what I can see the blade design of that fan you linked is good. The gaps and blade curve become more important as you create a positive or negative (neutral) pressure inside the case.

The blade design is most important when adding more blades to the design.

The flat blades at a high pitch are great for normal exhaust but the curved (wing) blades do a excellent job of intake and creating pressure thus allowing the cheap flat bladed fans to work more effectively.
 
Should be good as that cooler moves a lot of air. I would not go wild in the OC department though as it is an above average cooler but not a substitute for liquid.
 
Archer0915 said:
Should be good as that cooler moves a lot of air. I would not go wild in the OC department though as it is an above average cooler but not a substitute for liquid.
Click to expand...
Heehee,Is 3800Mhz(19x200)2600NB/HT Link 1600Mhz cl7 timings wild in the OC department?:attn:
 
I tried 4.3ghz @1600mhz mem speeds using Tweak it,played GTA EFLC for ard 3 hrs,my cpu temps shot up to 60c,after that lowered to my current speeds & never tried it again:salute:
 
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