Inefficient fans?

NikPalPro
NikPalPro Member Posts: 36 Devotee WiFi Icon
edited December 2023 in 2020 Archives
I want to know how many watts the Dual Fan set-up in my laptop consumes.
I have the Acer Nitro 5 AN515-54-52H2
It seems like the fans are the ultimate culprits of my poor battery life saga of the Acer Nitro 5. I checked today, the fans at max used upto 22W on an idle CPU (consumes 9W on idle). What specifically is the Power consumption rating of those fans? How much can they peak upto? 

Also, I would appreciate it if there is a way that the fans can be turned off as well

Answers

  • batmalin
    batmalin Member Posts: 4,231 Guru
    Where did you get those numbers? 22w for a fan is insane number. Usually a fan power is between 0.5 - 1.5 watts. 
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  • batmalin
    batmalin Member Posts: 4,231 Guru
    If you mean the entire laptop draws 22w that`s more likely because you have ~ 9w cpu ~8w gpu + MB, RAM, Wifi Card, HDD/SSD and so on. So the fan is the least power consummer.
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  • NikPalPro
    NikPalPro Member Posts: 36 Devotee WiFi Icon
    batmalin said:
    If you mean the entire laptop draws 22w that`s more likely because you have ~ 9w cpu ~8w gpu + MB, RAM, Wifi Card, HDD/SSD and so on. So the fan is the least power consummer.
                        Please click yes if I have answered you question.a 
    I said "On Idle".
    My GPU is ever-disabled through Device Manager, I did so because if any app demands the GTX 1050, my battery life will instantly dip down to barely 1h. Furthermore, motherboard, WiFi, RAM, HDD+SSD, Display are included when I said 9W on idle. I went from 9W to 22W just by switching to Max Speed on NitroSense.
    My device also idles on 15W with the fans at 1700rpm.
    batmalin said:
    Where did you get those numbers? 22w for a fan is insane number. Usually a fan power is between 0.5 - 1.5 watts. 
    EXACTLY! That is my issue, I am wasting a lot of my battery life to these! These also don't cool the device effectively because they hover at 1800rpm, pushing the system to 16W and barely keeping the system below 50 C(120 F). Also, both fans kick at once, doubling the wastage unnecessarily.

    I guess Acer must get this sorted with an update, allowing only one fan to operate when on battery at least and letting minimum rpm be around 500, to actually save power, instead of wasting power at 1700rpm unnecessarily.
  • batmalin
    batmalin Member Posts: 4,231 Guru
    This doesn`t make sense at all, I am pretty sure that the fan can`t draw more than 1.5w power tops.  
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  • NikPalPro
    NikPalPro Member Posts: 36 Devotee WiFi Icon
    batmalin said:
    This doesn`t make sense at all, I am pretty sure that the fan can`t draw more than 1.5w power tops.  
    Same feels. Same. But I checked it live. Also, it isn't one but 2 fans.
    Btw, gaming laptop fans most probably rev higher and consume more power too. 6000 rpm max is far more than a regular laptop's single 3000-ish rpm max fan
  • batmalin
    batmalin Member Posts: 4,231 Guru
    edited April 2020
    Even if they consume more it couldn`t be more then double so  3+3=6W more + 9W =15W not 22W. You could try  to mesure with multimeter because sw power reads are not reliable.
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  • NikPalPro
    NikPalPro Member Posts: 36 Devotee WiFi Icon
    batmalin said:
    If you mean the entire laptop draws 22w that`s more likely because you have ~ 9w cpu ~8w gpu + MB, RAM, Wifi Card, HDD/SSD and so on. So the fan is the least power consummer.
                        Please click yes if I have answered you question.a 
    I said "On Idle".
    My GPU is ever-disabled through Device Manager, I did so because if any app demands the GTX 1050, my battery life will instantly dip down to barely 1h. Furthermore, motherboard, WiFi, RAM, HDD+SSD, Display are included when I said 9W on idle. I went from 9W to 22W just by switching to Max Speed on NitroSense.
    My device also idles on 15W with the fans at 1700rpm.
    batmalin said:
    Where did you get those numbers? 22w for a fan is insane number. Usually a fan power is between 0.5 - 1.5 watts. 
    EXACTLY! That is my issue, I am wasting a lot of my battery life to these! These also don't cool the device effectively because they hover at 1800rpm, pushing the system to 16W and barely keeping the system below 50 C(120 F). Also, both fans kick at once, doubling the wastage unnecessarily.

    I guess Acer must get this sorted with an update, allowing only one fan to operate when on battery at least and letting minimum rpm be around 500, to actually save battery, 1700rpm minimum barely saves any evergy
  • NikPalPro
    NikPalPro Member Posts: 36 Devotee WiFi Icon
    batmalin said:
    If you mean the entire laptop draws 22w that`s more likely because you have ~ 9w cpu ~8w gpu + MB, RAM, Wifi Card, HDD/SSD and so on. So the fan is the least power consummer.
                        Please click yes if I have answered you question.a 
    I said "On Idle".
    My GPU is ever-disabled through Device Manager, I did so because if any app demands the GTX 1050, my battery life will instantly dip down to barely 1h. Furthermore, motherboard, WiFi, RAM, HDD+SSD, Display are included when I said 9W on idle. I went from 9W to 22W just by switching to Max Speed on NitroSense.
    My device also idles on 15W with the fans at 1700rpm.
    batmalin said:
    Where did you get those numbers? 22w for a fan is insane number. Usually a fan power is between 0.5 - 1.5 watts. 
    EXACTLY! That is my issue, I am wasting a lot of my battery life to these! These also don't cool the device effectively because they hover at 1800rpm, pushing the system to 16W and barely keeping the system below 50 C(120 F). Also, both fans kick at once, doubling the wastage unnecessarily.

    I guess Acer must get this sorted with an update, allowing only one fan to operate when on battery at least and letting minimum rpm be around 500, to actually save battery, 1700rpm minimum barely saves any evergy
  • batmalin
    batmalin Member Posts: 4,231 Guru
    Well gaming laptops usually are not known for power efficiency, so I woudn`t expect much after update even thou Acer moderators are reading the forums and usually let the engineering teams know about the issues. Sorry mate that I am not able to solve your issue,  nevertheless it was nice chatting with you! Maybe a case with Acer support woud speed getting the info to the developers team.
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    Please click "Yes" if I have answered your question.
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