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Probably not ;)

The actual info I'd rely upon at this point:

https://www.phoronix.com/benchmark/result/raspberry-pi-5-coo...

pi5 with active cooler is about 1.2-1.5x faster than pi5 without cooler for most workloads that care than without.

Pi5 with active cooler is about 2-2.5x faster than Pi4. So Pi5 without cooler is probably about 1.5x faster than pi4, depending upon workload. (And more than this for quick bursts where thermal mass wins).

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And if you dont have a heatsink and fan of sorts just use alternativing fingers on the cpu, they can still absorb about 10-15 DegC off the cpu temp and thats overclocking a 3b in the 1.35Ghz range. Surprisingly robust. Sadly cant get it to idle below .6Ghz yet, that needs more work.

But it makes wonder how much more phone manufacturers could squeeze out of their phones, although Apple are definately overclocking the 15.

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