Re:Raspberry Pi 4
by kllrnohj on Tuesday June 25, 2019 @11:13AM
(#20275041)
> Jetson Nano is A57 and Pi4 is A72 which is maybe twice as fast
A57 and A72 are very close in performance, as the A72 is an evolution of the A57. ARM's numbers have the A72 around 20-30% faster than the A57. The main advantage of the A72 was it fixed the horrific power problems the A57 had so in a phone usage you could actually use the CPU for longer than 10 seconds. But in raw performance it wasn't that much of a jump. A53 to A72 is around 2-3x as fast, though. A53 was the power efficient one. A57 was the performance one.
Both the Jetson Nano & Pi4 are clocked at around 1.5ghz, so the Pi4 should still eek out a bit of a CPU performance gap over the Nano. But if you're purely comparing factory vs. factory then the Nano would probably win over longer stretches as the Pi4's lack of heatsink results in it throttling down to around 1ghz after a few minutes. The Nano looks like it has a beefy enough heatsink to keep the A57's churning for a lot longer at their 1.43ghz spec.
A57 and A72 are very close in performance, as the A72 is an evolution of the A57. ARM's numbers have the A72 around 20-30% faster than the A57. The main advantage of the A72 was it fixed the horrific power problems the A57 had so in a phone usage you could actually use the CPU for longer than 10 seconds. But in raw performance it wasn't that much of a jump. A53 to A72 is around 2-3x as fast, though. A53 was the power efficient one. A57 was the performance one.
Both the Jetson Nano & Pi4 are clocked at around 1.5ghz, so the Pi4 should still eek out a bit of a CPU performance gap over the Nano. But if you're purely comparing factory vs. factory then the Nano would probably win over longer stretches as the Pi4's lack of heatsink results in it throttling down to around 1ghz after a few minutes. The Nano looks like it has a beefy enough heatsink to keep the A57's churning for a lot longer at their 1.43ghz spec.