freeman
Posts: 50
Joined: Wed Sep 18, 2013 7:57 am
Location: European Union
Contact: Website

Core Temperature of Raspi

Wed Sep 18, 2013 12:49 pm

I have overclocked my Raspi to medium level, 900MHz. Temperature is around 55C. And is stable. Do you think, can i overclock more saftly?

You can see MRTG CORE temperature of my Raspi right now.
http://freeman.myftp.org/mrtg/

You can monitor yours via this MRTG script:

Code: Select all

cat /etc/mrtg/temp.sh
#!/bin/sh
t=`awk < /sys/class/thermal/thermal_zone0/temp '{print ($1/1000) }'`
INT=${t/\.*}
echo $INT
t=`awk < /sys/class/thermal/thermal_zone0/trip_point_0_temp '{print ($1/1000) }'        `
INT=${t/\.*}
echo $INT
hostname;
echo "temp";
and MRT code:

Code: Select all

Target[server-temp]: `/etc/mrtg/temp.sh`
MaxBytes[server-temp]: 100
Title[server-temp]: CORE TEMP
YLegend[server-temp]: C
ShortLegend[server-temp]: C
Legend1[server-temp]: C
Legend2[server-temp]:
LegendI[server-temp]:
LegendO[server-temp]:
Options[server-temp]: gauge,nopercent,integer,growright
PageTop[server-temp]: <h1>CORE TEMP</h1>
                <div id="sysdetails">
                        <table>
                                <tr>
                                        <td>System:</td>
                                        <td>freeman.myftp.org in Sitting on the Dock of the Bay</td>
                                </tr>
                                <tr>
                                        <td>Description:</td>
                                        <td>CORE TEMP</td>
                                </tr>
                        </table>
                </div>
-----
Tomas Freeman

dom
Raspberry Pi Engineer & Forum Moderator
Raspberry Pi Engineer & Forum Moderator
Posts: 5269
Joined: Wed Aug 17, 2011 7:41 pm
Location: Cambridge

Re: Core Temperature of Raspi

Wed Sep 18, 2013 1:02 pm

55C is relatively cool for the 2835. We consider 85C to be the safe limit.

You may hit some other limit (power supply or speed of your specific silicon), but no reason to limit your overclock based on the temperature.

Return to “Troubleshooting”