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Raspberry Pi 4

raspberrypi.org

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Re: Raspberry Pi 4

#211

Post by rbanffy »

vardump wrote: post #197
waterhouse wrote: post #178

Earlier quoted context omitted.

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.

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.

Re: Raspberry Pi 4

#212

Post by [deleted] »

ggm wrote: post #169
bscphil wrote: post #112

Earlier quoted context omitted.

That's really too bad. It makes the 4K support useless for building an HTPC, which is a common use for the Pi. As far as I can determine, several of their competitors already support 10bit decoding, although specifics (about stable HDR support) are sometimes hard to come by.

As a fifty seven year old, I don't have 4k eyeballs. agree you have a limitation, not one which is holding me back since osmc does 720p just fine, for Olde telecine mp4s of B&W movies

[deleted]

Re: Raspberry Pi 4

#213

Post by kingosticks »

hlandau wrote: post #180
KaiserPro wrote: post #171

Earlier quoted context omitted.

> Secondly, why was rpi.org caught adding DRM chips to their optional camera addon board? to stop counterfeit boards. There are many _other_ cameras that you can use for the rpi, so its not like they are trying to block out competition. its to stop people making illegal clones and ripping people off. ( cough I'm looking at you amazon) see semi official explanation here: https://www.raspberrypi.org/forums/viewtopic.ph…

Thanks to you and @kingosticks above for digging up these official accounts. Cursory examination of rpi firmware suggests that this DRM logic is implemented in start.elf, one of the proprietary blobs required to boot an rpi. This is, in itself, significant, since opening this blob would obviously make this restriction easy to circumvent. In other words, rpi have taken design decisions which essentially motivate them…

You are right, they probably won't open the blobs if it means circumventing their own DRM, which I think has been shown to be used reasonably. The mpeg license has almost the same argument as the v2 camera, I think we have covered that.

But that aside, "as a chokepoint of control over the platform"? What platform are you specifically talking about?

Re: Raspberry Pi 4

#214

Post by anovikov »

Great!! What about GPU upgrade? I have a client with a project which only 'kind of' works on a model 3B, he needs about 2x the GPU encoding capability. Is there a chance model 4 will be able to encode a single full HD (1080p/30fps) or two 720p/30fps video streams, into H264, even if on easiest encoding settings?

Re: Raspberry Pi 4

#215

Post by HeadsUpHigh »

hlandau wrote: post #180
KaiserPro wrote: post #171

Earlier quoted context omitted.

> Secondly, why was rpi.org caught adding DRM chips to their optional camera addon board? to stop counterfeit boards. There are many _other_ cameras that you can use for the rpi, so its not like they are trying to block out competition. its to stop people making illegal clones and ripping people off. ( cough I'm looking at you amazon) see semi official explanation here: https://www.raspberrypi.org/forums/viewtopic.ph…

Thanks to you and @kingosticks above for digging up these official accounts. Cursory examination of rpi firmware suggests that this DRM logic is implemented in start.elf, one of the proprietary blobs required to boot an rpi. This is, in itself, significant, since opening this blob would obviously make this restriction easy to circumvent. In other words, rpi have taken design decisions which essentially motivate them…

The same could be said about the VideoCore 4 blob which was used to boot the SoC. And yet they just did get rid of it.

Re: Raspberry Pi 4

#216

Post by akavel »

robsalasco wrote: post #91

benchmarks here! https://blog.hackster.io/benchmarking-machine-learning-on-th...

Thanks! I was especially interested in the cooling situation with RPi, and the article you linked to seems to provide some valuable information & further links in this regard (section "Heating and Cooling": https://blog.hackster.io/benchmarking-machine-learning-on-th...)

Re: Raspberry Pi 4

#217

Post by pizza234 »

paulcarroty wrote: post #157
Medox wrote: post #46

Depending on the purpose, for example if somebody just wants a compact home cloud, the Odroid HC2 could also - still - be considered: https://www.hardkernel.com/shop/odroid-hc2-home-cloud-two/ - Half the RAM but double the cores. I'm waiting for some benchmarks to see if the RPi4 is faster and by how much. - Also Gigabit Ethernet and it works great. My downloads are always at 108-111MB/s for the whole transfer. - Not…

> the Odroid HC2 could also - still - be considered Even don't think about it - shitty support from vendor. They don't care about updates in general.

They do update their repositories for officially supported SBCs.

Of couse, such SBCs have an expiry date (which is also official), but this applies to any vendor, not only to them.

Additionally, they're one of the most engaging companies when it comes to community - just check their forums and see for yourself.

Re: Raspberry Pi 4

#218

Post by HeadsUpHigh »

hlandau wrote: post #17

>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.

Re: Raspberry Pi 4

#219

Post by bitL »

Hmm, this obliterates Pentium J-based NUCs for HTPC use... And my Trossen Robotics HR-OS1 humanoid robot gets a nice computational boost! Cool RPi folks, thank you!

Re: Raspberry Pi 4

#220

Post by Tepix »

pjmlp wrote: post #89
benj111 wrote: post #60

Earlier quoted context omitted.

"freeloaders just turn up and demand more." If this were software, this would be a discussion about open source, would you accuse people of forking an open source project of being freeloaders?

Yes, given the recent discussions how some projects were surprised that many companies are putting non-copyleft licenses to good use of their investors, when they are full compliant with what the license requires from them.

If that's what the license allows that's perfectly fine.
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