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Raspberry Pi Zero 2 W

raspberrypi.com

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Re: Raspberry Pi Zero 2 W

#41

Post by MayeulC »

oxplot wrote: post #33
geerlingguy wrote: post #2

I've been testing one for a couple weeks, and a quick rundown on it: it has a quad-core A53, same CPU/SoC core as the Pi 3, with 512 MB of RAM. This means it can run 64-bit Pi OS, but it is memory-limited and even some of the benchmarks I ran needed extra swap space to complete. But for anything that does run in the 512 MB of LPDDR2 RAM, it is at least twice as fast as the Zero/Zero W, and sometimes 3-8x faster, depe…

As for the RAM limitation, zswap is a great way to get some more RAM at cost of some CPU cycles which on the new Pi won't be an issue.

I've been running some tests on my regular server, where it seems that zstd offers better compression ratios than the default lzo-rle. Ratios are currently at 3.7 vs 2.6 according to netdata; I've seen them as far apart as 4 vs 2. Mostly a matrix server with a big database.

zstd could be slightly slower, although according to some benchmarks, it decompresses faster.

Re: Raspberry Pi Zero 2 W

#42

Post by Jnr »

ajsnigrutin wrote: post #35

Yay, another thing i won't be able to find anywhere for a year, then find it for $25 with "only one per customer"and $15 shipping. I understand it's a global chip shortage, but when zero W came out, there wasn't one.

It is currently available (and in stock) from the official resellers, at least here in Europe. Limited to one per order but that kind of makes sense considering the global chip shortage. Get one while you can. :)

Re: Raspberry Pi Zero 2 W

#45

Post by chronogram »

oxplot wrote: post #33
geerlingguy wrote: post #2

I've been testing one for a couple weeks, and a quick rundown on it: it has a quad-core A53, same CPU/SoC core as the Pi 3, with 512 MB of RAM. This means it can run 64-bit Pi OS, but it is memory-limited and even some of the benchmarks I ran needed extra swap space to complete. But for anything that does run in the 512 MB of LPDDR2 RAM, it is at least twice as fast as the Zero/Zero W, and sometimes 3-8x faster, depe…

As for the RAM limitation, zswap is a great way to get some more RAM at cost of some CPU cycles which on the new Pi won't be an issue.

zram*

zram is the compress-in-memory like you have in Windows and ChromeOS and zswap is the compress-on-disk in case you want to replace SD cards.

Re: Raspberry Pi Zero 2 W

#46

Post by vbezhenar »

geerlingguy wrote: post #2

I've been testing one for a couple weeks, and a quick rundown on it: it has a quad-core A53, same CPU/SoC core as the Pi 3, with 512 MB of RAM. This means it can run 64-bit Pi OS, but it is memory-limited and even some of the benchmarks I ran needed extra swap space to complete. But for anything that does run in the 512 MB of LPDDR2 RAM, it is at least twice as fast as the Zero/Zero W, and sometimes 3-8x faster, depe…

Does it overclock/throttle automatically like Intel? E.g. if I put some good cooling, will it run on faster frequencies?

Re: Raspberry Pi Zero 2 W

#47

Post by Rochus »

guywhocodes wrote: post #44
Rochus wrote: post #40

Earlier quoted context omitted.

Or even better USB OTG.

You can do this with gadget mode, the g_serial module.

Sure, but it has two USB sockets of which one is only used for power supply; if that one could also be used as OTG (instead of just TTL RX/TX as suggested by the fellow) that would be great.

Re: Raspberry Pi Zero 2 W

#48

Post by rcarmo »

calin2k wrote: post #26
rcarmo wrote: post #8

Earlier quoted context omitted.

64bit is great news (if only because I can target it with the same binaries), but only 512MB of RAM and no EMMC is disappointing, regardless of power budget constraints. I have been using 3As because of the reduced size (and the full sized HDMI port, which comes in handy), so I hope those get updated to a 4-grade chipset —- I feel that there is a gap between the Compute Module and the A that needs filling.

next we need a RPi4A with 2GB of ram, the full size HDMI, usb C and updated silicon

That might well be the sweet spot, yes.

Re: Raspberry Pi Zero 2 W

#50

Post by boondaburrah »

Welp, excited to not be able to buy one of these.

One thing that's been interesting is that despite the 2x markup of anything pi related where I live, the pi pico was available almost immediately at about $6. I guess I'll be going a bit lower level then.

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