Laptop is not safe for itself i'm sure please recommend

amd4lif3

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Oct 20, 2014
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Ok so I have a laptop and its 17.3" i7 4710Q 4 cores 8 threads 8gb ram duel channel and the graphics card is 940M from Nvidia. its a P.C specialist laptop and recently the motherboard died they fixed it and ive been monitoring what has been happening since its been fixed a few blue screens of death and my brother has said it has peaked to 97 degrees. when i got worried so ive been doing my tests and i have found out that the charger is the culprit since i ran a 5 min benchmark and it was not going above 55 degrees which is fine for an i7 at 100% load but then i did the same benchmark with the charger in and it peaked at 84 degrees.

I know whaaa.. anyway i checked the sticker on the laptop and it is not some crazy thing i checked my friend who has a extra powerful laptop has a charger with a 3.5A fuse in his charger and his has a higher voltage than mine, this is strange since my charger is fitted with a 5A fuse very odd in my eyes the question for all you electricians is should i be replacing the 5A fuse with a 3A fuse.

Thanks
 

kyzarvs

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Aug 19, 2008
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On battery your CPU will max out at a lower level, keeping the temperatures down. When you plug the charger in it will operate at a much higher rate, resulting in your higher temps.

Check your cooling, make sure your laptop is on a hard surface when being worked hard, clean the vents, make sure all fans are working etc?
 

dark_lord69

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What you need to know...
1. You CPU's max celcuis is a whopping 100 degrees
2. When your CPU gets too hot either your laptop will shutdown on it's own OR the cpu fan will kick it into high speed
3. When you run on battery the cpu conserves power, heat and will typically run slower, on a power adapter it will run at full power.

From Intel about your CPU:
TJUNCTION 100°C
"Junction Temperature is the maximum temperature allowed at the processor die."
 

amd4lif3

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Oct 20, 2014
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i know about power conserved cpus i unparked my desktops cpu but the limit it not huge only by a few degrees a cpu simply does not go from 55 degrees to 84 degrees normally
 

kyzarvs

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Monitor the frequency of the laptop CPU whilst running your test on battery vs on charge. It's not the same as a desktop CPU and the difference will be quite large.


At 100 degress the CPU's own protection would kick in, it wouldn't just keep spiralling up until it pops ;)
 

kyzarvs

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If you know the answer and don't want to listen to the community if their answers are different to your opinion - why ask? :D

I have an Asus RoG i7 laptop and I own an IT support company with 10 employees that looks after several hundred machines a year. I'm categorically telling you that without going out of your way to inhibit the behaviour, mobile i7's do behave very differently under charge vs on battery - just like every other mobile CPU that's been made for the past dozen years or so. For instance my RoG has a glitch that the charger doesn't work when the laptop is plugged into the brick after the power lead - I notice that as my i7 widget shows my max CPU speed is throttled. I unplug the brick, plug it back in so it's charging and everything goes back up to full.

You may have a desktop i7 in a laptop (/shudder), but even then the CPU will cut itself out at whatever it's thermal limit is. Not within 3 degrees of that limit, not when you are starting to worry, but when it actually hits that limit.

I wish you the very best with your investigation and I hope you get to the bottom of your problems with the machine :D
 

amd4lif3

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hi sorry if i sounded rude this laptop is soo annoying makes the desktop performance of the machine seem worthless after looking under the hood you would be shocked to see what i saw a puny rubbish heatsink so ugly i wouldnt even call it worthwhile , but anyway i have ran out of thermal paste so because i needed to know if the laptops 27% thermal throttle was due to the paste or the crappy heatsink i just got some toothpaste and applied it to the cpu and gpu this gave me a around a 10 degree drop (ps i paid them to apply artic silver 5) so with a 25 degree increase i realised it was the heatsink its less than what you woud find on a 8800gts for crying out loud thats years old so after this i heavily underclocked it to 1.5ghz and finally got around 67 degrees which is like what and after this i kept taking it up i got to 2.6 ghz where i found the temp did not go over 67 so im happy with that. never ever buying a pc specialist laptop again seriously why put a flashy bit of silicon to emerse the nerd when all you can hear is the blearing of a fan , laptops hatred evolved. i feel sorry for the people who have bought laptops with full cpus as awell as full gpus RIP. so turns out i was right and wrong and a little in the middle simply put PC master race. notebook nobles you have lost your title, and i understand laptop fans are cheap which is why they make such terrible noise, i know and my expectations for a gaming laptop is low which is why i game on my pc silent pc anyone well i can make one lol i literally cannot hear my pc and it still performs like a boss thanks Asus that direct Cu ii really helped :) and thankyou all who helped diagnose the issue with the laptop though the issue is only on the laptops design so for another day haha.
 

hang-the-9

Titan
Moderator
All laptops have a small heatsink, you can't expect to fit a 3" tall heatsink like you'd see in a desktop inside a laptop. The issue was likely that whoever swapped the motherboard did not seat the heatsink properly. It's not a design issue, it was likely an issue during replacing the motherboard. The laptop heatsinks use a heatpipe for heat transfer away from the CPU, not large fins and fans. You are applying one thing you know (how desktop heatsinks look) to another, which does not always work.
 
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