I ran the memory test with just the fan blowing on the top surface of the P2 and while it failed the memory test after just a minute or so, it let me play the MSlug game for at least 15mins before I stopped playing. So having memory test failures early doesn't necessarily correlate with game lockups, although I didn't run it for an extended time. Ambient room temp is 22C. I probed the edge of the P2 and saw about 38C but this is not the hottest part.
If I do make another variant I think I could put the P2 on the top surface of my FireAnt P2 board with a single sided load. When I measured the inside of the case this leaves about 6mm from the PCB top to the inner top edge of the cartridge. A 1.2mm P2, a 1.5mm AL plate and a 3mm fan would just fit. The fan would sit over the P2 and blow air down onto the plastic case. Cuts in the AL plate would allow some airflow around the hot areas. Holes may need to be drilled above the fan in the case for intake/exhaust.
The only other way is to somehow route out the plastic case underneath the PCB for the P2 to sit exposing the ground on the top surface but it makes assembling the board very difficult with a double sided load, and I'm kind of wondering where all those bypass caps would go too. I'm still deliberating...
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Awesome, thanks for confirming that.
Vertical fins it is then... and perhaps a small 20mm fan on AL substrate
I ran the memory test with just the fan blowing on the top surface of the P2 and while it failed the memory test after just a minute or so, it let me play the MSlug game for at least 15mins before I stopped playing. So having memory test failures early doesn't necessarily correlate with game lockups, although I didn't run it for an extended time. Ambient room temp is 22C. I probed the edge of the P2 and saw about 38C but this is not the hottest part.
If I do make another variant I think I could put the P2 on the top surface of my FireAnt P2 board with a single sided load. When I measured the inside of the case this leaves about 6mm from the PCB top to the inner top edge of the cartridge. A 1.2mm P2, a 1.5mm AL plate and a 3mm fan would just fit. The fan would sit over the P2 and blow air down onto the plastic case. Cuts in the AL plate would allow some airflow around the hot areas. Holes may need to be drilled above the fan in the case for intake/exhaust.
The only other way is to somehow route out the plastic case underneath the PCB for the P2 to sit exposing the ground on the top surface but it makes assembling the board very difficult with a double sided load, and I'm kind of wondering where all those bypass caps would go too. I'm still deliberating...
Would it run at 300 MHz with no special cooling?
The thing I made could only really run MegaYume . That’s the easiest, lowest freq one…