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Lenovo IdeaCentre Y900-34ISZ . Does the motherboard support PWM fans?

2016-12-05, 9:12 AM

So, I have already ordered an Ideacentre with the Gtx 1070, 16 Gb of ram, 6700k, 256 ssd and 1tb hdd.
It will be home next week so I'm already searching to buy two more fans for the spare case spaces.
I would like to confirm two things.
Firstly that the fans are 120mm.
Secondly, if the motherboard supports PWM fans or not.
I can see from the manual (take a look at the screenshot) that the motherboard indeed has 4-pin headers but still, that deosn't make PWM support 100% certain.
Any help whould be appreciated.
Thank you.

 

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919 Posts

07-05-2016

GB

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Re: Lenovo IdeaCentre Y900-34ISZ . Does the motherboard support PWM fans?

2016-12-07, 16:32 PM

wrote:

So, I have already ordered an Ideacentre with the Gtx 1070, 16 Gb of ram, 6700k, 256 ssd and 1tb hdd.
It will be home next week so I'm already searching to buy two more fans for the spare case spaces.
I would like to confirm two things.
Firstly that the fans are 120mm.
Secondly, if the motherboard supports PWM fans or not.
I can see from the manual (take a look at the screenshot) that the motherboard indeed has 4-pin headers but still, that deosn't make PWM support 100% certain.
Any help whould be appreciated.
Thank you.

 


Hi G47,

 

I can answer the second part of your question which is yes it does Support PWM fans.

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4 Posts

12-05-2016

GR

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Re: Lenovo IdeaCentre Y900-34ISZ . Does the motherboard support PWM fans?

2016-12-13, 8:30 AM

Anyone?

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11-18-2012

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Re: Lenovo IdeaCentre Y900-34ISZ . Does the motherboard support PWM fans?

2016-12-13, 15:18 PM

Welcome to the Lenovo Community g47 !

 

Although there are part numbers available for those fans, any product description lacks the size specifications.  I did some additional searching and came across an older review which I have linked below.  In that review they describe the 120mm fans that the Y900 has.  Hopefully this information will be of help.

 

http://www.computershopper.com/desktops/reviews/lenovo-ideacentre-y900/(page)/2#review-body

 

Personally, I would just wait till the computer arrives and then you will be able to inspect it to see what size fans will work in the extra fan locations.



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4 Posts

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Re: Lenovo IdeaCentre Y900-34ISZ . Does the motherboard support PWM fans?

2016-12-13, 15:44 PM

Thank you Majestic.
I've seen this review but until I can be 100% sure I won't make the purchase.
I guess I'll just wait.

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01-24-2017

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Re: Lenovo IdeaCentre Y900-34ISZ . Does the motherboard support PWM fans?

2017-03-12, 2:32 AM

The fans are 120x120 by 25mm (thickness). There is one front mounted (upper position) fan on the Y900-34ISZ. I added a second fan in the lower front mounting area. You have to fiddle with them a bit, but they just snap in. No screws needed.

 

I moved the upper fan power wire connection to the higher 4 pin fan connector on the motherboard because the wire on the original fan was long enough to reach. Had to take the back off my desktop case as well as the front, and route the fan wire around back thru the hole provided and then hook up to motherboard. Was a tight place to work without removing any parts, but I did get the wire/connector moved/installed.

 

This let me route the much shorter power wire on my 2nd (lower) fan to the lower motherboard power connection without needing an extension cable for the new fan I installed.

 

All fans are now PWM controlled. As follows after I added 2nd front fan.

 

2-120mm Front Intake fans.

1-120mm Red LED CPU Cooler fan

1-120mm Rear Red LED Exhaust fan.

 

PWM comes from Lenovo set to Smart Auto. My CPU fan had an annoying whine at that setting so I went into BIOS and set the PWM Fan Profiles to manual and then fooled around with the settings til I got it set up right for my needs.

 

No more CPU Fan whine, and everything including CPU now runs cooler.

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