This looks usable for desktop tasks, does anyone have tips for a good display to pair with it, optimized for energy saving (in the 24", FullHD class)?
I was thinking the same. This is a great compact and low-budget desktop
Raspberry Pi 4
221–230 of 859 posts
Re: Raspberry Pi 4
#222Earlier quoted context omitted.
I'd love to see other interesting $35 SBCs with reasonable performance.
You might check out the NanoPi Fire3, which I think came out in early 2018: https://www.friendlyarm.com/index.php?route=product/product&... Has an eight -core 1.4GHz CPU, and is otherwise mostly comparable to the new Pi: 1G RAM, 1Gb ethernet. Has an SD card slot and no built-in storage.
Yes, these are A53 cores which the RPi 3 used. The RPi 4 uses A72 cores, which are a lot faster. A53 are efficiency optimised cores and A72 are performance optimised cores.
The RPi has such a big community that I imagine performance and optimisation will quickly surpass other chips, eg. Rockchip RK3399 [1] (2xA72 and 4xA53) and will probably end up on par with an Amlogic S922x [2](4xA73 and 2xA53).
[1] http://rockchip.wikidot.com/rk3399 [2] https://www.cnx-software.com/2019/02/01/amlogic-s922x-benchm...
To get the full performance out of the RPi, you are going to need a beefy heatsink or it will thermal throttle very quickly.
Re: Raspberry Pi 4
#223Has anyone set up a Kubernetes cluster using several RPIs? How did it go? Got any recommendations for distributions, tools, etc.?
I'm using Rancher's k3s[1] on a Rock64, and it works perfectly. I maxed out the capacity recently and I was looking to add more nodes to my cluster. Looks like the new Rpi 4 would be a good addition ! [1] https://k3s.io/
I'm curious. What do you use it for?
Re: Raspberry Pi 4
#224I have a Raspberry Pi 4 Model B in front of me and have just run some benchmarks using the Phoronix Test Suite. TL;DR: Prime CPU test; Pi4B: 60 seconds, Pi3B+, 80 seconds, Render test: Pi4B 27fps at 720p, Pi3B+ 16fps at 720p. Zips of the test reports: http://cdn.littlebird.com.au/rpi4/test-4-b.zip http://cdn.littlebird.com.au/rpi4/test-pi-3-b-plus.zip
Please run SD card benchmarks, assuming you have a fast card available.
Seems to be UHS-I because it isn't mentioned anywhere.
Re: Raspberry Pi 4
#225Earlier quoted context omitted.
The camera PCB was made by rpi for specific use with the rpi. The DRM chip is not part of the camera vendor's assembly. It is a separate chip placed on the PCB, therefore placed there by the PCB designer, i.e., by rpi.
Isn't the use of the chip by the user entirely optional?
Well, it's optional in the sense that if you can find a way to use the camera with some board other than a Raspberry Pi then you don't have to use it. If you're doing the intended thing of connecting it to a Raspberry Pi, though? Not optional.
Re: Raspberry Pi 4
#226I'm very happy about that ! I needed to build a low power Nas with ZFS and the only board that could do the job (gigabit Ethernet, sata IO, powerful 64 bits processor, 4GB of ram) was the rockpro64. Sadly I discovered after receiving it that it can't run regular Linux distros out of the box. I had to download an image from some guy on GitHub. He seemed reasonably trustworthy since it was linked from the manufacturer'…
> (gigabit Ethernet, sata IO, powerful 64 bits processor) The RPi4 doesn't have sata.
Damn I read the article a bit too fast, neither does the rockpro64 but it has pci-e and the manufacturer sells a sata card.
An usb3-> sata adaptater is ok if the USB bus is reasonably fast. I care more about being able to update my board and trusting what runs on it than pure speed
Re: Raspberry Pi 4
#227Earlier quoted context omitted.
I'm crossing my fingers here. This is really something they should have put in the specs if it's supported. With 10bit decoding and Rec. 2100 [1] support, this would make a fantastic platform to build a media center on. I'd certainly upgrade from the Pi 3 even though I don't currently have a 4K television. [1] https://en.wikipedia.org/wiki/Rec._2100
I looked at the dmesg from someones Phoronix testsuite run and it has: [drm] Initialized v3d 1.0.0 20180419 for fec00000.v3d on minor 0 So this is vc5/6, not vc4. Additionally: Vendor: Broadcom (0x14e4) Device: V3D 4.2 (0xffffffff)
Do we know for sure that all VC5/6 SoCs support HDR decoding, or is that still unknown? The Wikipedia page for VideoCore only lists one VC5 SoC and no VC6 SoCs. The Broadcom page for the VC5 SoC is pretty uninformative.
Edit: I found this thing someone on the RaspPi forums put together! https://cdn.shopify.com/s/files/1/1560/1473/files/Inside_Ras...
> The Pi 4 has seen an upgrade to VideoCore VI.
> The H.265 / HEVC decoder is a HEVCv2 Main 4:4:4 10 design supporting bitstreams up to profile 5.1
Sounds promising! (The documentation on the website should certainly be fixed if this is correct.) Now assuming Rec. 2100 is properly supported to allow connecting to HDR capable displays over HDMI 2.0, we should be good!
Re: Raspberry Pi 4
#228>Are you still using VideoCore? >Yes. VideoCore 3D is the only publicly documented 3D graphics core for ARM‑based SoCs, and we want to make Raspberry Pi more open over time, not less. This stated intention and rpi.org's actions are simply not isomorphic. If they want to make Raspberry Pi more open, firstly, why do they publish only abridged (read: fake) schematics? [1] Secondly, why was rpi.org caught adding DRM chip…
My understanding is that they mean open in software not hardware.
This doesn't add up either, since they seem to be effectively walling themselves into not opening up some of the software needed to boot rpis, which remains proprietary. See https://news.ycombinator.com/item?id=20261549
Re: Raspberry Pi 4
#229Earlier quoted context omitted.
8 slow in-order A53 cores. I'd much rather take RPi4's four wide out-of-order A72 cores.
It really depends on your use. If you plan to build a desktop replacement, thread performance matters. If you want a small cluster node for educational purposes, more slow cores are better.
Clock for clock, A72 is 2-4x faster than A53.
But yeah, perhaps it's better to have a lot of small cores for a cluster.
Re: Raspberry Pi 4
#230Earlier quoted context omitted.
1) They make a low cost computer where they've put significant work into making it more open software wise. Their revenue stream is through the sale of their hardware, why do they need to allow people to make clones? 2) Maybe it's to do with the terms in which they get the camera module? I don't know but I don't see them selling the camera as interoperable. Your comment just seems to exemplify the phrase: "No good de…
They've specifically said that the camera module DRM chip is there because they make money from selling the camera modules and they don't want third-party cloners undercutting their pricing and eating into their profits, as happened with the non-DRMed version one of the camera module. Thing is, the third-party camera modules aren't just much cheaper, they're also offered in a whole bunch of useful variants that aren'…
> So in order to ensure their continued profits, they're using DRM to actively make their platform less useful.
but that is demonstrably not true. The CSI interface and driver is opensource (https://patchwork.kernel.org/patch/9951525/), anyone can create a camera that piggybacks onto that port. Infact, there are a number of aftermarket cameras that do. Some have built in infrared, some are tiny.
What they are attempting to do is stop counterfeit "official" camera.
Also, all that money goes to either developing more board, or running educational outreach. So I think one can forgive them the urge to protect revenue. It's not like they are microsoft in the 90s, or oracle.