octubrqParticipant09/11/2014 at 02:14Post count: 46
my pi gets very hot inside my bartop and freezes when running this 1 hour, I bought some on ebay heatshink fan. My setup is this
arm_freq = 900
core_freq = 300
sdram_freq = 500
Will that be enough or is it better to put a 8 cm fan?
Is that setup is good for the memory card?
thanksAnonymousInactive09/11/2014 at 16:54Post count: 12
I’ve had a heatsink on mine since long before I started running RetroPie but in a rather closed case with just the heatsink it could easily go above 70 degrees celsius. Now I’m using a wide open case with heatsinks and fan and it runs about 25 degrees cooler now.
My overclocking is:
Important for overclocking is a good powersource (700mA is not enough, I’ve tried).
Also I believe cranking up the core clock may be what have the biggest effect. Overclocking the gpu probably have very little or no effect. I went from 250 to 275 just to make it half the core clock. It most likely makes no difference.
I have three Raspberrys and all three are stable at cpu=1000, core=500, sdram=500 and overvolting=6 if used with a good powersource. That’s without active cooling. Only the one I use for RetroPie has been taken it bit higher.
Here’s a script that you can use to monitor the temperature:
Btw, here’s my overclocking settings from my Raspberry that runs Raspbmc:
I wouldn’t be surprised if your Raspberry can run with those settings too if you have a good enough powersource (1A or more).AnonymousInactive09/11/2014 at 17:02Post count: 12
Oh, and one more thing. The fan I use is a 5v fan but the GPIO pins can provide both 3.3v and 5v so I ended up using 3.3v for the fan to make it run much quieter. Still cools it good enough.
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