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Tangential but important : supply :) Here in Australia, seems like it is available from Nov 8 at Core electronics [0] [0] https://core-electronics.com.au/raspberry-pi-zero-2-w-wirele...
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?
Inside a case, it quickly heats up under load!
In all cases, the CPU frequency starts stepping down when the temp hits 80C, and on the default clock it will go to 800 MHz until the temp is 79C. If it reaches 85C, it will throttle severely, all the way down to 400 or 600 MHz, I believe, until the temps get back down to 84C.
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…
Is it 28nm or 40nm?
Spec of the Radxa Zero ($15):
CPU: Quad Cortex-A53 1.8 GHz, 12nm process
GPU: Mali G31 MP2
RAM: LPDDR4 512MB/1GB/2GB/4GB
Storage: eMMC 5.1 8/16/32/64/128GB and uSD card
HDMI: Micro HDMI, HDMI 2.1, 4K@60 HDR
Multimedia: H265/VP9 decode 4Kx2K@60
Wireless: WiFi4/BT4 or WiFi5/BT5
USB: One USB 2.0 Type C OTG, one USB 3.0 Type C host
GPIO: 40Pin GPIO, ADC/UART/SPI/PWM
Others: Crypto Engine, support external antenna, one button
CPU: Broadcom BCM2710A1, quad-core 64-bit SoC (Arm Cortex-A53 @ 1GHz)
RAM: 512MB LPDDR2 SDRAM
Storage: None, MicroSD card slot
HDMI: Mini HDMI port
Multimedia: H.264, MPEG-4 decode (1080p30); H.264 encode (1080p30)
Wireless: 2.4GHz IEEE 802.11b/g/n wireless LAN, Bluetooth 4.2, BLE
USB: 1 × USB 2.0 interface with OTG
GPIO: HAT-compatible 40 pin I/O header footprint
Other: OpenGL ES 1.1, 2.0 graphics, CSI-2 camera connector,
composite video and reset pin solder points
Earlier quoted context omitted.
next we need a RPi4A with 2GB of ram, the full size HDMI, usb C and updated silicon
At some point we have to ask what the raspberry pi platform is for - they used to be low budget, low cost, low power general purpose computing in an extremely small formfactor. It seems like there's still one product, but increasing divergent use cases for that product.
Surprised nobody has mentioned or compared it to the Radxa Zero.[0][1] Spec of the Radxa Zero ($15): CPU: Quad Cortex-A53 1.8 GHz, 12nm process GPU: Mali G31 MP2 RAM: LPDDR4 512MB/1GB/2GB/4GB Storage: eMMC 5.1 8/16/32/64/128GB and uSD card HDMI: Micro HDMI, HDMI 2.1, 4K@60 HDR Multimedia: H265/VP9 decode 4Kx2K@60 Wireless: WiFi4/BT4 or WiFi5/BT5 USB: One USB 2.0 Type C OTG, one USB 3.0 Type C host GPIO: 40Pin GPIO, A…
The Radxa is a better value if pure performance is the only criteria.
But the real value of the Raspberry Pi products is the ecosystem and code support. It will be much easier to find tutorials and software support for the Pi Zero 2 W than the Radxa and the Pi will be supported for a long time after the Radxa has been discontinued.
Earlier quoted context omitted.
next we need a RPi4A with 2GB of ram, the full size HDMI, usb C and updated silicon
At some point we have to ask what the raspberry pi platform is for - they used to be low budget, low cost, low power general purpose computing in an extremely small formfactor. It seems like there's still one product, but increasing divergent use cases for that product.
There have been a lot of commenters in this post basically complaining that there are too many Raspberry Pis. From a practical standpoint, I don't get the complaint (I mean, how does that personally harm them in any way?).
The Raspberry Pi foundation's mission is to increase technical literacy worldwide by making and selling very low-cost yet reasonably high-performance computers. They also do quite a lot of education and outreach themselves.
What people here seem to be forgetting is that these things take money and instead of spending time fundraising (a huge cost and time sink for most non-profits), they decided to tap into the maker and computer geek communities, as well as industry. When people like you and me buy these boards to play with or build into our projects, we are subsidizing all of the foundations design, education, outreach, activities. Also when companies build products and internal solutions around the Pis. The whole reason they still sell the (mostly) original Raspberry Pi board is because there are systems, processes, or fleets still using them. They'll continue to use them until a design change is required. As long as its relatively easy for the foundation to squeeze out a new batch every so often (all of the hard work of designing them is already done), what does it hurt?
Earlier quoted context omitted.
Yes; check my blog post [1] or latest YouTube video [2] for details, but the tldr is 0.4W (80 mA) idle minimum for Zero W, 0.6W (100 mA) idle minimum for Zero W 2. Zero W goes up to 160 mA at load, while Zero W 2 gets up to 400-500 mA due to the three extra CPU cores. [1] https://www.jeffgeerling.com/blog/2021/look-inside-raspberry... [2] https://www.youtube.com/watch?v=lKS2ElWQizA
2W! Did you measure Gflops? I wish you could disable cores dynamically...
Earlier quoted context omitted.
That's a big jump. Is there a way of getting Linux to disable a couple of cores?
`echo 0 > /sys/devices/system/cpu/cpu[0-n]/online` should do what you want.
Edit: That works! See: https://www.jeffgeerling.com/blog/2021/disabling-cores-reduc...
too bad, no 5ghz wifi.