stopcrazypp
Well-Known Member
The video says a shared heat sink does not warm up the NAND faster. Leaving it unsinked actually lets the NAND heat itself up faster and retain that heat better. It's probably because of the large thermal mass of the heat sink which sucks out all the heat from the NAND. I guess it does depend on the specific temp target of the SOC (vs how hot the NAND gets without a heat sink), but the rest of the components I don't imagine would contribute to help the NAND, given the limited amount of heat they put out.Heatsink is not really considered active cooling. Shared heat sink heats up the EMMC to the same temperature as the rest of the chips (SoC, RAM, couple of others), so the EMMC chips warm up faster than in the Tesla but also don't reach the same highs. Additionally, I'm only starting to dig into this (just picked up my Taycan 3 weeks ago, then drove it home for 9 days to get to know it), but I don't think Porsche is writing much to the OTA module EMMC at runtime, other than during OTA.
And as you say it limits the peak temp, which is not what you want in a NAND chip. If you look at the chart I linked, there are life expectancy gains up to 80C (when they ended testing).
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