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2017-02-20, 14:21
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#1 |
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Feb 2017
Somewhere on Earth
610 Posts |
How to make Prime95 run faster without charger?
Right now I'm working on a fairly small Mersenne number, but I found that my laptop makes progress on this number incredibly slowly without a charger compared to with one. Right now, if I set the program to output every 100 iterations with my charger in, it reports an ETA of right around 5 days. However, if I remove my charger, the program's ETA instantly shoots up to just over 14 days.
Does anyone know how to fix this? I am on a schedule where I really cannot keep my laptop plugged in all the time and I would hate to have slow progress because of it. |
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2017-02-20, 16:45
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#2 |
Aug 2012
Mass., USA
2·3·53 Posts |
There is a checkbox for that. Look in the menus under Options -> Preferences....
Beware that running Prime95 on battery power will drain the battery significantly faster than when it's not running. I personally check the checkbox, but I'll stop Prime95 when the system is not going to be connected to AC power for awhile and it's more important to me to save battery power. Also, note that unless you select a "high performance" power plan in the operating system, your system will likely run at a reduced clock speed especially when on battery power. |
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2017-02-20, 17:26
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#3 | |
Jun 2003
2×32×269 Posts |
Quote:
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2017-02-20, 17:55
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#4 |
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Feb 2017
Somewhere on Earth
2×3 Posts |
I went to the Preferences menu and the box "Run program even when using laptop battery power" is checked. Also, I am running my laptop at high-performance and have been for the past few months, way before downloading Prime95. Are there any other ways I can improve performance? I don't understand why the program slows down when I remove the adapter.
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2017-02-20, 20:55
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#5 | |
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Banned
"Luigi"
Aug 2002
Team Italia
23×599 Posts |
Quote:
If you want to run Prime95 at the maximum possible speed and efficience, my hint is to buy a desktop with a supercharged PSU. |
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2017-02-20, 22:03
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#6 | |
"Kieren"
Jul 2011
In My Own Galaxy!
1015010 Posts |
Quote:
As others have said, laptops aren't really set up for full-time number crunching. Their cooling systems are cramped, and thus very likely to get obstructed by dust and lint. Since high processor usage equals high fan speed, lots of airborne detritus will get sucked in. If you pursue using the laptop for P95, especially when running full power on A/C, be sure to vacuum and blow out any accessible vents really often. Also, it would be good to get a little free air space under the laptop. Ideal would be a cooling pad with fans, but a kitchen wire cooling rack could give almost as much benefit. Laptops tend to get hot on the bottom. At least one of the cooling vents will be there, too. Give the machine every advantage you can, which can include passively cooling the underside just by letting more air get to it. Last fiddled with by kladner on 2017-02-20 at 22:04 |
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2017-02-20, 23:22
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#7 |
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"Kieren"
Jul 2011
In My Own Galaxy!
27A616 Posts |
Very much On Topic and very amusing, too:
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