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If I put an SSD in my laptop, should I get any battery life out of it?

post #1 of 11
Thread Starter 
SSD's use less power, and give off less heat I believe. I have a Sager NP8150, with a GTX 485m, and i7 2630QM.

The kicker is the 750GB 7200RPM HDD. I've been looking into an SSD for the speed benefits for sure, but I've heard conflicting reviews on battery life. Some say the gain would be negligible, some say 10 minutes, some say half an hour, and some say up to an hour!

I haz no idea who to believe frown.gif I'm tempted to believe an hour is overshooting, but would I gain 10-30 minutes you think? Would I notice it? What's the verdict here? (Looking at the 840 Pro's as they consume less power than the 830's, and appear to be faster).
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post #2 of 11
From what I've read in various benchmark tests, it seems that SSDs have better battery performance, but the difference is minimal. Like 10-20 minutes minimal. In some cases some SSDs got worse battery life.
But the real benefit is obviously the read/write performance compared to standard disk drives.
post #3 of 11
Thread Starter 
I guess if everything goes faster, you don't have to use it as much, thus saving you time, so you're on it less, thereby requiring less power! ^___^ It's one way of looking at it, hehe.
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post #4 of 11
This isn't a from a perfect test setup (visited different websites, etc), but I gained ~35 minutes of battery lifetime after replacing a Samsung 5400 rpm 1TB HDD & optical drive with a Samsung 830 & Plextor M3. This is normal web browsing over the entire period of time, and my battery stops charging at 80% (Samsung BatteryLife Plus aka 65120 mWh of the battery's maximum of 81400 mWh), so keep that in mind.
     
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post #5 of 11
Thread Starter 
Quote:
Originally Posted by Jocelyn84 View Post

This isn't a from a perfect test setup (visited different websites, etc), but I gained ~35 minutes of battery lifetime after replacing a Samsung 5400 rpm 1TB HDD & optical drive with a Samsung 830 & Plextor M3. This is normal web browsing over the entire period of time, and my battery stops charging at 80% (Samsung BatteryLife Plus aka 65120 mWh of the battery's maximum of 81400 mWh), so keep that in mind.

This makes me feel happy because my HDD is 7200RPM. Takes more power than yours, so my power usage drop goes down drastically ^__^
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post #6 of 11
Yes it will improve battery life, I was getting about 5 hours with a 5400RPM drive and now I get this:

post #7 of 11
Most of your power use is the screen, CPU, and GPU. Everything else doesn't make enough of a dent in your power to really warrant upgrading for better battery life.
post #8 of 11
Sure, and as mentioned in my last post 35 minutes X 1.25 = ~44 minutes, which is to compensate for the 80% vs 100% battery thing. Most of the power savings comes from finishing operations quicker, which Lost Prophet mentioned above.
Quote:
Originally Posted by ./Cy4n1d3\. View Post

Most of your power use is the screen, CPU, and GPU. Everything else doesn't make enough of a dent in your power to really warrant upgrading for better battery life.

I mainly upgraded so I didn't have to hear noisy mechanical drives. I don't think I'll ever use them internally again, whether it be a laptop or desktop. I like everything to be sonically invisible, at least while in 2d mode.
Edited by Jocelyn84 - 9/27/12 at 5:46pm
     
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post #9 of 11
Quote:
Originally Posted by Moleboy View Post

SSD's use less power, and give off less heat I believe. I have a Sager NP8150, with a GTX 485m, and i7 2630QM.

The kicker is the 750GB 7200RPM HDD. I've been looking into an SSD for the speed benefits for sure, but I've heard conflicting reviews on battery life. Some say the gain would be negligible, some say 10 minutes, some say half an hour, and some say up to an hour!

I haz no idea who to believe frown.gif I'm tempted to believe an hour is overshooting, but would I gain 10-30 minutes you think? Would I notice it? What's the verdict here? (Looking at the 840 Pro's as they consume less power than the 830's, and appear to be faster).

Given the rest of the parts on your laptop, I reckon the power savings from switching from a 1-2W HDD to a 0.2-0.7W SSD would be fairly negligible. If your laptop already had low power consumption (say 7-8W while browsing), then yeah, you might see significant improvement in battery life.

Not the most accurate of calculations/estimates but this should give you at least an idea:

80Wh battery:

ultraportable laptop/netbook

estimated power consumption with HDD: 8W
estimated battery life: 10 hours

estimated power consumption with SSD: 7W
estimated battery life: 11.4 hours


gaming laptop

estimated power consumption with HDD: 20W
estimated battery life: 4 hours

estimated power consumption with SSD: 19W
estimated battery life: 4.2 hours
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post #10 of 11
it helps a bit, but just a bit.
hte main benefits are no mechanical parts and more silent
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