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Thread: Question about db?

  1. #1
    Join Date
    Nov 2001


    Lets say that I have 4 fans in my case. They are all the same and they each put off 30 db. Am I right in assuming that the db's don't add up.

    Like 4 fans x 30db each = 120db? It's more like 4 fans x 30db each = 30db? Right?

    And anything less than that should get drown out by the louder fans, right?

  2. #2
    Join Date
    Nov 2001
    Texas, USA


    You are correct in your assumptions. Your ear will really only pay attention to the most noticeable sound it hears, which is why it is difficult to pick up any sort of background noises when there is some sort of louder noise in the area.
    Old age and treachery will overcome youth and skill
    My Toys

  3. #3
    Join Date
    Nov 2001


    Harmonisily balance fans run quieter. Currently I'm running 3 80mm 4500rpm w/ 64cfm each. Several techy buddies agree me that she's real quiet. I also got real good temps on a gen case.
    Todate: 1000+ OC'g postings,
    +=I lost count sometime ago.
    Rig built in the Last year- 5
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    AthlonXP 1800|MSI K7T266PRO2|786mb P2100 Mushkin|20gig IBM GXP60 (Deathstar- it's twin died) Hd |20gig maxtor ata133|Abit GF4 TI 4200|SdBlstr live!|16x t0shy|16x10x40 Liton| Cooling: 3 80mm [email protected], 2 grill Hd fans, 2 92mm & 80mm @64cfm mod'd gladiator.
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    Save everybody sometime, post your system spec's. It saves time when ya need help!

  4. #4
    Join Date
    Nov 2001


    Yeah I also have 4 fans in my case with all the same amount of db.
    My System:
    AMD [email protected]
    ECS K7S5a Motherboard
    512 MB PC2700 DDR Ram
    Geforce 2 Pro 64 MB

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