solar10 a écrit : ↑09 nov. 2020, 00:23
Unix-Linux a écrit : ↑08 nov. 2020, 20:21
@ Solar : pour répondre à ta question : le bon sens
C'est comme, ci-dessous, mettre 3000 chevaux dans un moteur cummins diesel et regardes vers la quatrième minute trente ce que ça donne
Soit vous captez rien à l'anglais soit vous n'avez pas vu la video... Le bon sens n'a rien à voir là-dedans.
Non, même pas regardé la video car 1.8Ghz est déjà pas mal.
Maintenant, tu as raison sur un point et ce du grâce au "B0T vs "C0T"
, mais on a tellement le problème de surchauffe du "B0T"...
Pi 400 Performance
One thing you might notice in the Pi 400's specs is a new, higher default clock speed than you get with the year-old Pi 4 model B.
It's clocked at 1.8 GHz out of the box, while the Pi 4 model B is clocked at 1.5 GHz.
In some quick Phoronix benchmarks, the Pi 400 performed about 18% faster than the Pi 4 model B at the higher clock speed... which is expected, since that's the same ratio as the increase in megahertz.
But how is this higher clock possible? Well, not only is the massive heatsink helpful here—the Pi 400 didn't overheat even when I was running it with an overclock to 2.147 GHz, the maximum it allows currently—but the actual BCM2711 chip is different in this model.
The key difference here is the final "B0T" vs "C0T". That "C0" indicates the chip in the Pi 400 has a higher 'stepping' than the "B0" Pi 4. That means the chip has some minor bugfixes and improvements—in this case better thermal performance at higher clock speeds—and it can do more than the slightly older version of the same chip.
Fun fact: I just checked my Compute Module 4, and it, too, has the newer "C0" revision. Interestingly, it is still clocked at the same 1.5 GHz default as the Pi 4 model B.
In the end, it's not a massive difference, but it is a noticeable speed bump for many operations, and can even help make IO faster, for example if copying large files over the network to a fast USB 3.0 drive.