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LC3 overclock and custom cooling
Posted by: GameOverman on 2024-05-05 12:28:16 so got bored overclocked my LC3 with the resistor mod. It was getting hot, so I made a custom cooling solution keeps it cool when running benchmarks and whatever else any thoughts? here is a funny little, short I made
Posted by: Iesca on 2024-05-05 12:33:02 My LCIII is also overclocked. Thus far, I have yet to add any cooling methods at all, and it seems to have been running fine, though admittedly I don't use it super often or for very long at a time. That said, I do want to add at least a heat sync. Certainly an extra fan as well can't hurt! Different individual CPUs will run hotter or cooler, from what I understand, so if yours was running particularly hot after overclocking, it may be you've done the exact right thing with the additional cooling.
Posted by: GameOverman on 2024-05-05 13:10:20 My LCIII is also overclocked. Thus far, I have yet to add any cooling methods at all, and it seems to have been running fine, though admittedly I don't use it super often or for very long at a time. That said, I do want to add at least a heat sync. Certainly an extra fan as well can't hurt! Different individual CPUs will run hotter or cooler, from what I understand, so if yours was running particularly hot after overclocking, it may be you've done the exact right thing with the additional cooling. Yeah I noticed with the case on it got very hot and with thr case off it was hitting 100 f 😳 so now it's nice and chilly
Posted by: theirongiant on 2024-05-05 14:09:30 After over clocking my LC III, I added a heatsink to the 68030. No extra fan. It is running just fine. The temperature is about 130-140°F on the heatsink. I have put it through a battery of the Speedometer benchmarks without any issues.
Posted by: danny.gonzalez.0861@gmai on 2024-05-06 06:18:49 MC68030 specs show max operating temperature of 70C which is close to 160F. You should be good to go with just a heatsink but make sure you have a little bit of airflow in the case to keep things in check.
Posted by: JC8080 on 2024-05-08 06:06:44 I bought this small heatsink/fan combo for my IIsi (Amazon link), it is designed for a Raspberry Pi. I haven't installed it yet, but it looks like it might be a good solution.
Posted by: Iesca on 2024-05-08 18:38:49 According to the manual, it appears that the 68030 is designed to operate between 0° and 70° C, which means 32° and 158° F, so if it's running at ~100° F, I'd say we're golden. Of course, the IR camera just reads the external temperature of the package, but even so, that seems like a good enough place to be in my mind. EDIT: Just saw that @danny.gonzalez.0861@gmai already posted the temps, derp!
Posted by: GameOverman on 2024-05-09 09:15:11 I bought this small heatsink/fan combo for my IIsi (Amazon link), it is designed for a Raspberry Pi. I haven't installed it yet, but it looks like it might be a good solution. Nice this looks good 👍
Posted by: redphantom on 2024-05-21 12:36:09 I tried the resistor mod myself, but only ended up with the death chime. I even moved the resistor back to R14, and still a death chime. I'm hoping the hot air rework station just cooked the resistor, but we will see. The risks we take I guess.
Posted by: Iesca on 2024-05-21 12:39:13 Thankfully it's really just a jumper (a "0-ohm link"), so you could just bridge it with a piece of wire or a cut capacitor leg or something, and that would be a good way to test if it's really the component or if it's something else.
Posted by: redphantom on 2024-05-21 19:22:27 Yeah looks like a memory issues, resolved now.
Posted by: Unknown_K on 2024-05-21 20:58:16 No point in overclocking when heat affects stability. I stuck an 040/25 board into one of my LC III's and glued a slightly cut down heatsink to the CPU which barely allowed me to close the lid.
Posted by: Iesca on 2024-05-21 21:31:00 The boost to 33 from 25 is very minor. I'm not saying it's impossible for it to overheat, but I personally have not experienced any performance issues.
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