thanks for the replies, guys
the pump is Pump, PMP-400,
# Maximum Flow Rate: 8.5 L/min (2.25 gal/min)
# Maximum Head Pressure: 4.6m (15ft)
# Motor: Brushless DC, electronically commutated, spherical motor
# Power Consumption (at max): 18W
my hardware, C2D Extreme 2.93GHZ, Geforce...