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HDD vs. SSD: power consumption

nj4ck
By nj4ck
in Storage Devices
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Hey guys, I just ordered a Lenovo Thinkpad Edge 145, which I need for university. I also ordered a SanDisk 128 GB SSD (SDSSDP-128G-G25), which I plan to replace the original 500 GB HDD with. I was just wondering, will this benefit battery life of the notebook? Does anyone have any information on how much power an SSD consumes compared to a standard 2.5" HDD?

      

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Hey guys, I just ordered a Lenovo Thinkpad Edge 145, which I need for university. I also ordered a SanDisk 128 GB SSD (SDSSDP-128G-G25), which I plan to replace the original 500 GB HDD with. I was just wondering, will this benefit battery life of the notebook? Does anyone have any information on how much power an SSD consumes compared to a standard 2.5" HDD?

http://ocz.com/consumer/ssd-guide/ssd-vs-hdd

 

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you can say less then half for sure...seeing how hdd has a motors...and ssds do not. :D otherwise /\

 

 

 

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SSDs generally consume less power than an HDD.

Source

ssd_comp_power.jpg

That's desktop HDDs though, those consume a lot more power than the 2.5" notebook drives.

      

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That's desktop HDDs though, those consume a lot more power than the 2.5" notebook drives.

Not entirely, they use the same kind of hardware, the platters on notebook drives are just smaller.

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Hey guys, I just ordered a Lenovo Thinkpad Edge 145, which I need for university. I also ordered a SanDisk 128 GB SSD (SDSSDP-128G-G25), which I plan to replace the original 500 GB HDD with. I was just wondering, will this benefit battery life of the notebook? Does anyone have any information on how much power an SSD consumes compared to a standard 2.5" HDD?

 

It will always use less power with an SSD. The difference is about as much power as charging a phone off your laptop takes.

"Rawr XD"

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Not entirely, they use the same kind of hardware, the platters on notebook drives are just smaller.

12V+5V combined power consumption on 3.5" drives is not the same as 5V power consumption on 2.5" drives.

 

Desktop HDD = ~750mA on 5V + ~500mA on 12V

Laptop HDD = 500-750mA on only 5V

"Rawr XD"

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12V+5V combined power consumption on 3.5" drives is not the same as 5V power consumption on 2.5" drives.

 

Desktop HDD = ~750mA on 5V + ~500mA on 12V

Laptop HDD = 500-750mA on only 5V

that means about 3,5W for the Laptop HDD, while SSD consume <2W... That's almost double.

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Not entirely, they use the same kind of hardware, the platters on notebook drives are just smaller.

yes, but everything is bigger. I remember reading that a 3.5" HDD uses between 6-8W (load) and a 2.5" HDD is around 3-5W or something like that.

      

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that means about 3,5W for the Laptop HDD, while SSD consume <2W... That's almost double.

The extra 1.5W will depend on the laptop though. In a gaming laptop 1.5W is nothing and you'll barely notice a battery life increase if any. In a low-power slim Ultrabook though it's a different story

"Rawr XD"

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yes, but everything is bigger. I remember reading that a 3.5" HDD uses between 6-8W (load) and a 2.5" HDD is around 3-5W or something like that.

 

Desktop HDD = ~750mA on 5V + ~500mA on 12V

Laptop HDD = 500-750mA on only 5V

 

Around 8.75W for desktop drive, 2.5-3.75W for laptop

"Rawr XD"

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From my experience it doesn't make a noticable difference in batterylife. Just replaced my SSD with my old 2.5" HDD (cause i needed the SSD elsewhere :) ) and it's terrible, but my battery lasts as long as usual.

Ryzen 5 5600, 32GB DDR4, GTX 3070Ti, Acer Predator x34

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The extra 1.5W will depend on the laptop though. In a gaming laptop 1.5W is nothing and you'll barely notice a battery life increase if any. In a low-power slim Ultrabook though it's a different story

Well, the ThinkPad E145 is a low-end subnotebook that will be used only for student-stuff like PDFs, web browsing and office. I chose it mainly because of the super-high battery life, which I will need. If the SSD means I can get 30 more mintes of battery life out of it, that's a big deal for me.

      

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an SSD isn't going to give you noticably more battery life in your laptop. HDDs and SSDs use so little power that it's not even worth debating.

I get 60 frames at 1080p on a dual core APU. Ask me how.

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  • 3 years later...
Posted

My old Acer Aspire 7745G used to last about 2 hours on battery with a HDD, when I switched it with an SSD, I got an extra 40 to 60 minutes. That said its a 8y old laptop.

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On 24.8.2014 at 6:37 PM, nj4ck said:

Hey guys, I just ordered a Lenovo Thinkpad Edge 145, which I need for university. I also ordered a SanDisk 128 GB SSD (SDSSDP-128G-G25), which I plan to replace the original 500 GB HDD with. I was just wondering, will this benefit battery life of the notebook? Does anyone have any information on how much power an SSD consumes compared to a standard 2.5" HDD?

I don't really remember if it was 10min or 30min on my Sony Vaio VPC-EF2S1E but it was noticable...

 

But that wasn't the reason why I replaced the 500GB Toshiba HDD with a 64GB Samsung 470...

The Reason was the noise of the HDD!


Its a fairly quiet HDD I must say but in a Laptop that's around 50cm away from you, without any noticable decoupling, you hear it and the Case might vibrate and increase the noise of the HDD...

In a Desktop however you wouldn't hear much of the HDD. Notebook is a whole different story...

"Hell is full of good meanings, but Heaven is full of good works"

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3 hours ago, Darkbound said:

My old Acer Aspire 7745G used to last about 2 hours on battery with a HDD, when I switched it with an SSD, I got an extra 40 to 60 minutes. That said its a 8y old laptop.

Oh boy I don't think you're supposed to revive a thread that's over 3 years old now ... isn't this considered gravedigging? :o 

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MacBook Pro 13" (2018) | ThinkPad x230 | iPad Air 2     

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