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Old 26th January, 2003, 03:34 PM
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Volcano 7 RPM Issue

Heyas,

I have a Volcano 7 (not 7+) running on an 8k9a2+ ... I believe these particular hs/f's run @ 5000rpm .. am I wrong? ... before I upgraded from a crappy generic 350w psu to this Antec TruePower 480w, I was getting between 4950rpm and 5020rpm sustained.. with the switchover to this new PSU .. I never see an RPM rate above 4620 ... can anyone explain why this 5000rpm fan is running WELL below spec?

cheers,

Ric
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Old 26th January, 2003, 03:36 PM
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Try running it direct from the PSU with a 3-4 pin adapter is my suggestion.
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Old 26th January, 2003, 03:48 PM
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It runs off a thermal diode. It will only run at the full rated speed if the diode is reading a very high temp. The alternative is to cut the diode off, and splice the wires (i wouldn't). Your best bet is to splice the wire, and extend it so that the diode can read temps from the CPU.

It runs 3000-5000 RPM depending on the temp reading.
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Old 26th January, 2003, 04:00 PM
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I have used Volcano 7's a lot, they run at various speeds depending on the temp of the cpu...............maybe when you upgraded to a better power supply, if it has double fans, it is keeping your case cooler, and the cpu temp is lower, so the fan has slowed down..............mine ir running at 4350 right now with about 44 degrees of temp on a XP2700+
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