[DISCUSSION] Fans/Heatsinks/CPU Cooling Mods

A place to talk about all the Operating Systems, Software & Hardware
Forum rules

- Posts are to be made in the relevant forum. Users are asked to read the forum descriptions before posting.

- Members should post in a way which is consistent with "normal writing". That is users should not post excessive numbers of emoticons, large, small or coloured text, etc. Similarly users should not SHOUT or use excessive punctuation (e.g. ! and ?) in topic titles or posts.

- Members should use an appropriate, descriptive subject when posting a new topic. Examples of bad subjects include; "Help me!", "I'm stuck!", "I've got an error!", etc. Examples of good subjects include; "Getting an TABLE FULL error upon login", "Cannot restore a backup".

- Members are asked to post in English only so that posts can be well received and properly monitored.

- Spam is not tolerated here under any circumstance. This includes offering hosting services (charged and free), installation services, solicitation etc. Recruiting members for your own projects (moderators, designers, professional MOD work, etc.) is not permitted and is also considered spam. Users posting spam will be warned and their post removed.

- Members should post in a way that is respectful of other users. Flaming or abusing users in any way will not be tolerated and will lead to a warning. Vulgar language and inappropriate material is not allowed and will be removed. We try to maintain a family friendly atmosphere whenever it is possible within the main subject matter of this community. Please keep this in mind when participating.

- Each user is allowed to create one account. If you would like to change your username, please contact us and, most likely, we can do it for you while you can keep all of your profile data, posts, and other content.

- If a user violates our guidelines and shows a disregard for them, our staff and our community, they run the risk of losing their account. We reserve the right to deactivate any account and to edit or remove any content without warning. These guidelines are subject to change at any time without notice.

Thank you for visiting LattePanda.com!
User avatar
LatteROFLCOPTER
Posts: 45
Joined: Mon May 16, 2016 6:00 am

Sat May 21, 2016 12:46 pm

Simple answer, Yes. If the CPU gets very hot and thus throttle the speed you will see dropped frames in your video playback.

These processors are designed to work at high temperatures, but if you live in a country that often gets 30c+ weather than sitting the LP on a fan and/or adding extra heatsinks will help very much,

I tested video playback (using KODI) in a room with an ambient temperature of 26c.
The LP's cores often reached the mid 80s but there wasn't any slowdown, performance was consistent.

A couple more degrees hotter and it would throttle and cause choppiness in the video playback.

I don't think the temperatures would be much different if you just put the LP upside down, but you can try it if you like.

User avatar
dees421
Posts: 1
Joined: Sun May 22, 2016 12:50 am

Sun May 22, 2016 12:59 am

Is it possible to hook up a tiny fan to cool the LP.? Or would it pull to much power and affect performance?? And would a different power supply voltage (raspi charge from other post) or 5v 2.5a or higher work to supply ample power?

User avatar
LatteROFLCOPTER
Posts: 45
Joined: Mon May 16, 2016 6:00 am

Sun May 22, 2016 4:09 am

You can get a 3pin fan to USB adaptor (which is what I'm using).

Be careful with the voltage, you don't want to give it too much it you may cause damage. 5V is the minimum, however 5.25V is also safe.

As far as amps, you can use any provided that it's 2a minimum. I'd recommend 2.2a or more though.

User avatar
tranman808
Posts: 10
Joined: Fri May 20, 2016 9:25 pm

Sun May 22, 2016 12:48 pm

Where are you guys buying these mini heat sink?

User avatar
acasta
Posts: 23
Joined: Sun May 15, 2016 9:43 pm

Sun May 22, 2016 1:27 pm

tranman808 wrote:Where are you guys buying these mini heat sink?
You could take a look at AliExpress - this is where I get all my "low performance equipment" from.

Link to AliExpress, just search for "raspberry pi heat sink" and you'll be in heat sink heaven ;)


-ac

Edit:
I also found a 40x32mm heat sink there. Should fit perfectly on the LP's heat spreader / shielding plates.

User avatar
tranman808
Posts: 10
Joined: Fri May 20, 2016 9:25 pm

Mon May 23, 2016 11:44 am

Could I get a link to that 40x32 heat sink? My temp are so high. Just from regular internet browsing it goes to 79-82 and stays around high 70s.

User avatar
fgaine
Posts: 12
Joined: Sat May 21, 2016 11:30 am

Mon May 23, 2016 11:56 am

There are loads on eBay too. Just make sure they're not coming from China, they'll take for ever to get to you!

User avatar
fgaine
Posts: 12
Joined: Sat May 21, 2016 11:30 am

Mon May 23, 2016 11:58 am

acasta wrote:
tranman808 wrote:Where are you guys buying these mini heat sink?
You could take a look at AliExpress - this is where I get all my "low performance equipment" from.

Link to AliExpress, just search for "raspberry pi heat sink" and you'll be in heat sink heaven ;)


-ac

Edit:
I also found a 40x32mm heat sink there. Should fit perfectly on the LP's heat spreader / shielding plates.
Do you mean that it would be OK to stick a heatsink directly on the metal plate rather than remove it first?

User avatar
schuschu
Posts: 2
Joined: Fri May 27, 2016 6:09 pm

Fri May 27, 2016 6:17 pm

After noticing very sluggish behavior compared to even my dell venue 8 pro I checked the task manager. My LP is always locked to 460 MHz (with the occasional jump to 480). So I decided to check the temperature of my board and .... its bad.

Anyone else having these problems or is this basically a DOA board?

Best,
schuschu
Attachments
bad.png
so very hot
bad.png (10.35 KiB) Viewed 10648 times

User avatar
tony359
Posts: 132
Joined: Tue May 24, 2016 5:52 pm

Fri May 27, 2016 10:49 pm

mine is 80°C when running at 1.6Mhz around 50% load.

Post Reply