Più bassa rimane meglio è.
Ho trovato molto interessante - anche per il prezzo - questi due dissipatori:
Heat sink : 95×95×40 mm (l × w × h)
12VDC Fan :95×95×25 mm
MaterialAL
BearingSleeve bearing
Rated speed
Cooler : 2400 RPM +/-10%
Only Fan :2300 RPM +/-10%
Rated power1.92 W
Rated Voltage12 V
Noise level26.0 dBA
Air flow46.46 CFM
Current0.16 A
Thermal resistance0.356 oC/W
Thermal pasteStars-350
Static Pressure2.11 mmH2O
MTBF30000H
Operating Temperature-10~70 oC
Storage Temperature-40~70 oC
Heat sink : 95×95×18 mm (l × w × h)
12VDC Fan :95×95×25 mm
MaterialAluminum
BearingSleeve bearing
Rated speed
Cooler : 2800 RPM +/-10%
Only Fan :2700 RPM +/-10%
Rated power3.6 W
Rated Voltage12.0 V
Noise level34.0 dBA
Air flow48.2 CFM
Current0.30 A
Connector3 pin, main board
ApplicationIntel Celeron D(340J)
Intel Core 2 Duo(775 Dual-core)
Intel LGA775(Prescott)
TDP65 W
Thermal resistance0.4 oC/W
Thermal pasteStars-350
Static Pressure3.22 mmH2O
MTBF30,000H
Operating Temperature-10~70 oC
Storage Temperature-40~70 oC
Ad ogni modo se abbasso la velocità della ventola si alza anche la resistenza termica?