What's max RPMs for stock Q6600 HS fan?

[orion456]

The stock HS fan for the Q6600 is 0.4 amps. What rpms do you get when its on full load? I'm thinking of replacing an older stock HS I have that does 1700rpm at max.

[JamesXP]

RPMs is nothing, it might have more CFMs you could just power both up and feel which one pushes more air.

[orion456]

RPMs is nothing, it might have more CFMs you could just power both up and feel which one pushes more air.

Both fans look identical and the heat sink is the same, however the Q6600 fan has a higher amps rating. That being the case, rpms will determine the air flow. It's hard to tell what kind of air flow the stock heat sink has because it has 360 degree air flow around as well as open sides, open bottom and an open structure fan.

It's strange I can't find Intel's specs on the fan.

I have determined that an external fresh air duct attached to the stock HS will reduce temperatures several degrees.

[nd4spdbh2]

Both fans look identical and the heat sink is the same, however the Q6600 fan has a higher amps rating. That being the case, rpms will determine the air flow. It's hard to tell what kind of air flow the stock heat sink has because it has 360 degree air flow around as well as open sides, open bottom and an open structure fan.

It's strange I can't find Intel's specs on the fan.

I have determined that an external fresh air duct attached to the stock HS will reduce temperatures several degrees.

it would make sence that it draws more amps to spin faster than say a E6600 stock hs... as the Q6600 has a higher TDP.

btw the fan on my stock e6600 cooler (thats sittin on my E4300 htpc) has an amp rating of .2A cant tell you the actual speed of the fan as i have a craptastic ECS mobo.

[Brolloks]

RPMs is nothing, it might have more CFMs you could just power both up and feel which one pushes more air.

Off course rpm's make a difference, it is dependant on the current that is passed through the fan's coils. Two 80 mm identical fans one with a higher current passing through it will have a higher rpm and a resultant higher cfm...the laws of aerodynamics my friend...

[orion456]

According to Intel, if you disable the 4th wire the HS fan will actually spin faster. The thermistor control on the core 2 extreme processor is disabled by default.

Intel says, "The boxed processor fan heatsink circuitry will not allow the fan to spin faster than necessary in order to meet worse case power usage at any given ambient temperature. The thermistor control is always active to limit maximum fan speed. (The Intel Core 2 Extreme processor actually has the fan thermistor disabled to allow maximum user flexibility in overspeed environments. If the motherboard does not support 4-wire fan speed control the fan will spin at full speed.)"

http://www.intel.com/cd/channel/reseller/asmo-na/eng/299986.htm

Looks like the maximum speed is around 3600 rpm for the new Q6600 stock heat sinks compared to 0.24A @ 1700 rpm for the old p4s. Can anyone verify that on their quad system?

[nd4spdbh2]

According to Intel, if you disable the 4th wire the HS fan will actually spin faster. The thermistor control on the core 2 extreme processor is disabled by default.

Intel says, "The boxed processor fan heatsink circuitry will not allow the fan to spin faster than necessary in order to meet worse case power usage at any given ambient temperature. The thermistor control is always active to limit maximum fan speed. (The Intel Core 2 Extreme processor actually has the fan thermistor disabled to allow maximum user flexibility in overspeed environments. If the motherboard does not support 4-wire fan speed control the fan will spin at full speed.)"

http://www.intel.com/cd/channel/reseller/asmo-na/eng/299986.htm

Looks like the maximum speed is around 3600 rpm for the new Q6600 stock heat sinks compared to 0.24A @ 1700 rpm for the old p4s. Can anyone verify that on their quad system?


is there a thermalsistor on the fan or something?

i just tried unooking the 4th pin and it does absolutly nothing to my E6600 stock cooler... the fan spins at 1700 rpm either way.