jessenator
Well-known member
I'm interested to see what you find!
I let my MC68040LRC40 (running at 33 MHz because it's in my unmodified Quadra 650 board), with heatsink, heat soak without a fan, but with the cover off for a while. I topped out at ~49 C (with my Harbor Freight IR thermometer so take as much salt as needed). I might let it run on my full-40 as well.
Edit: I'm getting about the same shelf on my 40 MHz running one as well.
I let my MC68040LRC40 (running at 33 MHz because it's in my unmodified Quadra 650 board), with heatsink, heat soak without a fan, but with the cover off for a while. I topped out at ~49 C (with my Harbor Freight IR thermometer so take as much salt as needed). I might let it run on my full-40 as well.
Edit: I'm getting about the same shelf on my 40 MHz running one as well.
Last edited: