gotspeed

is it just me or having the stock cooler master 120 fans on the top not really push that much air out that you can feel it.

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bobfig

i cant feel that much on mine ether. even with better fans...

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Aaron_Henderson

They hardly push any air out at all. I was thinking about cutting a channel into the top, and then cutting out the imitation "vents" that run along both sides (the plastic part) of the top so air can escape through there. I don't think the mesh alone provides enough ventilation, and also causes the top fans to be noisier.

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Screw what you know, you were lied to

CaBo0sE

Those fans really don't push that much air in any situation.

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miloshs

I think CM690 stock fans (crapo's) push something like 38CFM (38CFM - metal mesh - plastic mesh = 2CFM )... wich sucks big time.
I replaced my top ones with Scythe Kaze-Maru 1900RPM, and even at 5V those push more than stock CM's.



I've also cut out the plastic and metal mesh, just leaving the top fancy looking stuff on there. It greatly improved my airflow, and lessened the noise im getting

Generaly CM690 needs to be heavily cut out in order to get the airflow the case is famous for...

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gotspeed

yea but 2 of them blowing hot air up should have a little bit of a feel like air is moving shouldn't they. the mesh on the case is cut out just the plastic piece mesh is on top and i have a .0000001 mph air flow were the back case fan i can few air a few feet away that its moving air out. before any one asks if there in right they are.
the motor were the wires go in is on the top side and the side facing the motherboard is the clean part. just like the back fan.

ps. i cut mine out nice and cleanly :P

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scottath

Did some more routing over the weekend - ran into an issue of excess PCI-E cabling - so i just coiled it by the PSU for now.....

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Sparky6string

I still need to cut that honeycomb stuff out, on both of them. The stock CM fans don't push a ton of air but they are fairly quiet at least when new. I think their logic is a higher number of quiet fans instead of fewer noisier ones. I kept two of the CM fans, use a Noctua 120mm for the side panel and have two 140mm fans for the bottom and top over the CPU. Works well, still I'll probably change things around before too ling and include a fan controller.

gotspeed

any one got any suggestions for a good pwm 120 mm fan for the true 120 for me. blue led and quiet and moving a good amount of air. cost isn't to much of problem as long as there not like 200$ a fan lol

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grahamcrackuh

If you don't concern yourself with blue LED, I don't think much beats a scythe ultra - kaze (though some would say the san ace 1011s). Quite loud @ full rpm but its easy to control with speedfan and even at 50% these things are beastly.

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