new tower fans

narcopletic pc

New Member
im going to update my stock case fans with a couple Vantec torndoes. the only issue i am afraid of is actually causing a vacuum within the case as to where the air can actually be sucked back through my power unit causing it to over heat.... is this possible?
 

My Computer

System One

  • Manufacturer/Model
    HP
    CPU
    Phenom-9150e (A) 1.8 GHz (65W) 2000 MHz Hyper Transport 1.0
    Motherboard
    ECS MCP61PM-HM
    Memory
    7Gig PC2-6400 MB/sec 240 pin, DDR2 SDRAM
    Graphics Card(s)
    GeForce 6150SE nForce 430 (onboard)
    Sound Card
    High Definition 8-channel audio ALC 888S chipset
    Monitor(s) Displays
    w2207h 22" lcd wide-screen monitor HDMI
    Screen Resolution
    1680x1050
    Hard Drives
    640 GB SATA 3G (3.0 Gb/sec) 7200 rpm
    Mouse
    Laser
    Keyboard
    HP multimedia
    Internet Speed
    RR turbo 10meg down 1 up

skunksmash

im coming for cake
Vista Guru
Gold Member
im going to update my stock case fans with a couple Vantec torndoes. the only issue i am afraid of is actually causing a vacuum within the case as to where the air can actually be sucked back through my power unit causing it to over heat.... is this possible?

it is happening, per the new PC case layouts were seeing with the PSU on the floor of the case sucking straight from the outside & venting it back out the rear..

but the old case design has worked perfectly for years with the PSU at the top, thats why a 140mm fan was added to newer PSUs to help remove hot air from the case

but its not really an issue, your PSU will never die from the extra heat of your components...

it is on the other hand possible to create a ''dead spot'' where the PSU fan cannot extract due to chassis fan configs, but each case is different so its something you would have to test.

move your chassis fans to different locations each time holding your hand by the PSU exhaust, see if the flow changes at all. (i doubt it will)

i always try to put a ''positive'' pressure inside the case (more intake than exhaust), so air cant be sucked in through cracks & drive bays, thus lowering dust coverage

but a PSU can get very hot so i wouldnt worry too much....

:)SK
 

My Computer

System One

  • Manufacturer/Model
    ME.....
    CPU
    Q9450 @ 3.6ghz
    Motherboard
    P5K PREMIUM
    Memory
    8GB 1066mhz buffalo firestix
    Graphics Card(s)
    HD 5970
    Monitor(s) Displays
    20'' syncmaster
    Screen Resolution
    1680x1050
    Hard Drives
    160GB 7200RPM SEAGATE BARRACUDA IDE
    160GB 7200RPM SEAGATE BARRACUDA SATA 2
    PSU
    XCILIO 850w
    Case
    unknown ATX
    Cooling
    Arctic cooler pro 775
    Mouse
    logitech cordless optical
    Keyboard
    logitech EX110
    Internet Speed
    2mb

narcopletic pc

New Member
excellent explenation - ty - but the tower i have at the moment is a stock HP tower with no input fan - i know - i know - but using this tower as i go as a beater although not bad as i learn to make my casket ( wife says if im going to spend as much as i want i better die in it rofl) but ty for the input - inflow air should outdue output air - but wont this interupt the exuast fan speeds at some point?
 

My Computer

System One

  • Manufacturer/Model
    HP
    CPU
    Phenom-9150e (A) 1.8 GHz (65W) 2000 MHz Hyper Transport 1.0
    Motherboard
    ECS MCP61PM-HM
    Memory
    7Gig PC2-6400 MB/sec 240 pin, DDR2 SDRAM
    Graphics Card(s)
    GeForce 6150SE nForce 430 (onboard)
    Sound Card
    High Definition 8-channel audio ALC 888S chipset
    Monitor(s) Displays
    w2207h 22" lcd wide-screen monitor HDMI
    Screen Resolution
    1680x1050
    Hard Drives
    640 GB SATA 3G (3.0 Gb/sec) 7200 rpm
    Mouse
    Laser
    Keyboard
    HP multimedia
    Internet Speed
    RR turbo 10meg down 1 up

skunksmash

im coming for cake
Vista Guru
Gold Member
inflow air should outdue output air - but wont this interupt the exuast fan speeds at some point?

i cannot say for certain, but there is always a possibility that different fan configs will produce better results.

i have a similar problem with my 80mm side panel fan, it sits almost directly in between the RAM the HSF & interrupts airflow being pulled over the RAM :(, but the affect it has is negligible....

as long as there is air flowing that's all you need to worry about...

wife says if im going to spend as much as i want i better die in it rofl
i know the feeling mate, my other half would happily take a hammer to my setup. :(

:)SK
 

My Computer

System One

  • Manufacturer/Model
    ME.....
    CPU
    Q9450 @ 3.6ghz
    Motherboard
    P5K PREMIUM
    Memory
    8GB 1066mhz buffalo firestix
    Graphics Card(s)
    HD 5970
    Monitor(s) Displays
    20'' syncmaster
    Screen Resolution
    1680x1050
    Hard Drives
    160GB 7200RPM SEAGATE BARRACUDA IDE
    160GB 7200RPM SEAGATE BARRACUDA SATA 2
    PSU
    XCILIO 850w
    Case
    unknown ATX
    Cooling
    Arctic cooler pro 775
    Mouse
    logitech cordless optical
    Keyboard
    logitech EX110
    Internet Speed
    2mb

SgtBaxter

Member
Vista Pro
I wouldn't worry about the PSU so much, although the PSU's in prebuilts like HP's and Dells can be extra craptacular.

A computer case isn't exactly airtight. Air will sneak in/force out of all kinds of holes and cracks you probably don't even know are there. Ideally what you want is equal flow into the case and out of the case in as linear a motion as you can get, either front to back or bottom to top (chimney effect). That would give you the best results cooling wise.
 

My Computer

System One

  • CPU
    Q9450 @3.4Ghz
    Motherboard
    Asus P5Q Deluxe
    Memory
    8GB Corsair Dominator @ 1066
    Graphics Card(s)
    Asus AH4850
    Monitor(s) Displays
    Samsung 2235BW
    Hard Drives
    2x Seagate 750GB
    1x Seagate 160GB (IDE)
    PSU
    Cooler Master Real Power Pro 850
    Case
    Cooler Master Cosmos
    Cooling
    Cooler Master V8
    Keyboard
    Logitech WAVE Cordless
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