120mm Evercool - why high RPMs??

Elliot · Post by **Elliot** » Fri Nov 14, 2003 9:44 pm

Received my 120mm Evercool Aluminum fan today. Model EC12025M12CA. Plugged it in via Fanmate and 3-pin to 4-pin adapter with separate RPM connector (picture). Asus A7N8X-DX is the motherboard.

According to Evercool site and the retail box, it's supposed to be 2000 RPM at 12V. Motherboard Monitor 5 reports the following:

fanmate @ 12V: 4500-4700 RPM
fanmate @ 5V: 2000 RPM

Similar numbers in SpeedFan 4.09.

What is going on here? Was I sold a knock-off??

I should mention that the fan is very quiet at 5V, exactly as noted in this thread.

Bluefront · Post by **Bluefront** » Sat Nov 15, 2003 4:36 am

I'm using one....and at 2000rpm it is not quiet, blowing a huge amount of air. Plus I don't think any of the 120mm fans can turn as fast as your unit reports. I suspect you have hardware problem with your particular unit, somehow causing an inaccurate rpm read.

Post by **Ralf Hutter** » Sat Nov 15, 2003 4:56 am

I don't know about Speedfan but with MBM you can (and sometimes have to) set your "fan dividers" manually. You do this from the same spot that you set the rest of the fan configuration. You'll see it right on the upper half of the fan configuration screen. Read the MBM help file for more info, but basically you just move the slider to a different divider, hit apply and see what the rpm is reading. Adjust it to the correct range for your fan model (assuming the fan you got is the correct one) and you're good to go.

Elliot · Post by **Elliot** » Sat Nov 15, 2003 5:55 am

Ralf,

I'm monitoring 3 fans using MBM:

stock 60mm AMD heatsink fan @ 12V: 6000 RPM
Antec SmartPower 350W PSU: 3000-3400 RPM, temp regulated
120mm Evercool @ 5V: 2000 RPM

All three are at default MBM settings:

fan type = /1
fan divider = 4

The numbers for AMD and Antec fans appear correct. Why should I change the settings for Evercool then?

Elliot · Post by **Elliot** » Sat Nov 15, 2003 6:26 am

Looks like I can answer my own question:

Elliot wrote:The numbers for AMD and Antec fans appear correct. Why should I change the settings for Evercool then?

According to MBM help, fan type setting is there because:

Some Fans will show a too high RPM or a to low RPM as the pulses they send per second don't match what the sensor chip expects.

There are 11 settings, /1 to /10 which divide the readings by that amount and *2 which muliplies the reading by 2. Default setting for 99% of all boards will be /1

I set Evercool fan type to /2 and (obviously) MBM now shows 1000 RPM @ 5V.

Question to all Evercool owners: what fan type did you set in MBM to get the correct readings?

JVM · Post by **JVM** » Sat Nov 15, 2003 7:34 am

Elliot wrote:Received my 120mm Evercool Aluminum fan today. Model EC12025M12CA. Plugged it in via Fanmate and 3-pin to 4-pin adapter with separate RPM connector (picture). Asus A7N8X-DX is the motherboard.

According to Evercool site and the retail box, it's supposed to be 2000 RPM at 12V. Motherboard Monitor 5 reports the following:

fanmate @ 12V: 4500-4700 RPM
fanmate @ 5V: 2000 RPM

Similar numbers in SpeedFan 4.09.

What is going on here? Was I sold a knock-off??

I should mention that the fan is very quiet at 5V, exactly as noted in this thread.

How did you connect the Evercool with that 3-4 pin connector?

Tobias · Post by **Tobias** » Sat Nov 15, 2003 7:42 am

The tachometer counts how many times an impulsegivving unit (could it be a magnet or something) passes by a certain point on the house, and obviously the Evercool has twice the amount of those units, causing it to report twice the number of rpm:s. I have it to. When you think about it, it is realy a good feature, since some mobos have trouble reading tachometerimpulses below a certain threshold.

Elliot · Post by **Elliot** » Sat Nov 15, 2003 2:02 pm

Tobias wrote:The tachometer counts how many times an impulsegivving unit (could it be a magnet or something) passes by a certain point on the house, and obviously the Evercool has twice the amount of those units...

Do you know for sure that it has 2 "impulse giving units" or you reach this conclusion because it reports 2x number?

Elliot · Post by **Elliot** » Sat Nov 15, 2003 2:08 pm

JVM wrote:How did you connect the Evercool with that 3-4 pin connector?

Evercool 3-pin female connector --> Fanmate 3-pin male connector
Fanmate 3-pin female connector --> 3-pin male connector on the adapter
4-pin Molex on the adapter --> 4-pin Molex from PSU
3-pin RPM wire on the adapter --> MB fan header

Take a look at the picture that I linked upthread - it's worth 1000 words

Tobias · Post by **Tobias** » Sat Nov 15, 2003 3:19 pm

thats a conclusion:) Since everyone gets the same numbers, it shold be so:) Although, out of some strange reason, ASUS PCProbe gets it right...

JVM · Post by **JVM** » Sat Nov 15, 2003 4:09 pm

Elliot wrote:
JVM wrote:How did you connect the Evercool with that 3-4 pin connector?
Evercool 3-pin female connector --> Fanmate 3-pin male connector
Fanmate 3-pin female connector --> 3-pin male connector on the adapter
4-pin Molex on the adapter --> 4-pin Molex from PSU
3-pin RPM wire on the adapter --> MB fan header

Take a look at the picture that I linked upthread - it's worth 1000 words

The reason I asked was because the 120mm Evercool Aluminum I've seen on the web had a 4-pin connection. Where did you get the 120mm Aluminum with a 3-pin connection?

Elliot · Post by **Elliot** » Sat Nov 15, 2003 4:43 pm

Where did you get the 120mm Aluminum with a 3-pin connection?

Here. It's a Canadian shop.

Note that you can use 4-pin to 3-pin adapter to connect 4-pin fan to a Fanmate or rheobus.

JVM · Post by **JVM** » Sun Nov 16, 2003 6:57 am

Elliot wrote:
Where did you get the 120mm Aluminum with a 3-pin connection?
Here. It's a Canadian shop.

Note that you can use 4-pin to 3-pin adapter to connect 4-pin fan to a Fanmate or rheobus.

The only 120mm Evercool Aluminum I have found in the USA is model AL12025B.

JVM · Post by **JVM** » Mon Nov 17, 2003 2:22 pm

Elliot wrote:
JVM wrote:How did you connect the Evercool with that 3-4 pin connector?
Evercool 3-pin female connector --> Fanmate 3-pin male connector
Fanmate 3-pin female connector --> 3-pin male connector on the adapter
4-pin Molex on the adapter --> 4-pin Molex from PSU
3-pin RPM wire on the adapter --> MB fan header

Take a look at the picture that I linked upthread - it's worth 1000 words

Why is it necessary to connect the Evercool to both a Fanmate and Power Supply? Can't you just connect it to a Fanmate and then to the motherboard?

Elliot · Post by **Elliot** » Mon Nov 17, 2003 4:16 pm

Evercool is rated at 0.38A (or 4.56W). Because I didn't know how my MB's fan headers were rated, I connected fanmate to PSU.. just to be safe.

JVM · Post by **JVM** » Mon Nov 17, 2003 4:33 pm

Elliot wrote:Evercool is rated at 0.38A (or 4.56W). Because I didn't know how my MB's fan headers were rated, I connected fanmate to PSU.. just to be safe.

That must be the High Speed fan. The Medium speed is rated at 0.34A or 4.08W.

Here you can see the plastic version which I believe is the same as aluminum but just different material: http://www.evercool.com.tw/index_eng.htm

Now look here for the aluminum with specs: EverCool FAN-AL12025B low noise case fan, Silver, Aluminum. Look at this outstanding case fan: an insurance for your system. Recommended for all systems. Maximum reliability and long life-time. Strongly protect your case.

Features & Specifications: Dimensions: 120L x 120W x 25H mm. Voltage: DC 12V. Fan Speed: 2000 RPM. Current: 0.34A. Air Flow: 79.14 CFM. Air Pressure: 2.83. Noise: <30 dBA. Input: 4.08 W. Bearing Type: One ball bearing.

That was seen at: http://www.directron.com/fanal12025b.html

Now you can also see here the Medium fan: http://www.evercool.com.tw/index_eng.htm

Elliot · Post by **Elliot** » Mon Nov 17, 2003 6:50 pm

0.38A is the number from adpmods.com site, the retailer where I bought the fan.

As you pointed out, the number given at Evercool site is 0.34A.

I now dug out Evercool retail box and the numbers there are even lower:

L fan: 0.25A
M fan: 0.28A
H fan: 0.33A

Question: which number shall we believe?

My answer: I don't know and I don't care. I use PSU fan adapter.

JVM · Post by **JVM** » Mon Nov 17, 2003 7:01 pm

Elliot wrote:0.38A is the number from adpmods.com site, the retailer where I bought the fan.

As you pointed out, the number given at Evercool site is 0.34A.

I now dug out Evercool retail box and the numbers there are even lower:

L fan: 0.25A
M fan: 0.28A
H fan: 0.33A

Question: which number shall we believe?

My answer: I don't know and I don't care. I use PSU fan adapter.

At this point, I completely agree.

When I get mine, I won't even look at the box.

JVM · Post by **JVM** » Wed Nov 19, 2003 5:54 pm

Tobias wrote:thats a conclusion:) Since everyone gets the same numbers, it shold be so:) Although, out of some strange reason, ASUS PCProbe gets it right...

Tobias, do you have the Evercool connected straight to the motherboard via a Fanmate or do you have it connected to PSU, Fanmate and motherboard?

120mm Evercool - why high RPMs??

120mm Evercool - why high RPMs??

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