The only reason for that is if you filter the air coming into your case. The posotive pressure would ensure that all incoming air into the system comes through the filters. I was never one for filtering, so I never paid much attention to that requirement. I just try and keep it relatively balanced. If it is a little posotive or negative is of no concern to me.
BrianW
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Water Cooled Inwin Q500 (Dual Rads: Rad1 = DTEK Pro Core | Rad2 = Blick Ice Estreme, Hydor L30, Dangerden Maze2, Bay Res Typhoon Reservoir, 1/2 " DD Tygon Thick Wall Hose).
Flow: Res, Pump, CPU watervlock, Y into both rads, both rads into res independently.
Athlon XP 1800+ (@ 1731 - 150mhz fsb.), on a Asus A7N266-c, and a Radeon 9000 *waiting for RMA'd Saphire 9800 ultra from Newegg)
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