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Raspberry Pi 4

raspberrypi.org

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Re: Raspberry Pi 4

#301

Post by dandellion »

grizzles wrote: post #293

This is the death knell for x86 PCs for the consumer market. No regular user needs more than this. Developers and hardcore gamers will be the only ones left on x86. Intel will be a shadow of themselves soon. They have did such a bad job at diversifying.

I think it's great to have more options and this is interesting, but I don't think it's that big of deal. Anyone who wants to do any video editing, sound, 3D modeling, etc, or anything that requires graphics or serious software won't have enough with this.

For browsing and basic everyday use sure, but in that space people have been switching to tablets for a while now. So this might help that trend but I don't think it makes that much of a difference.

Re: Raspberry Pi 4

#302

Post by xorcist »

cyberjunkie wrote: post #3

Oh my! This is such a crazy upgrade. I've been using the RPI2 as my HTPC/NAS at my folks, and I'm so happy with it. I was itching to get the last one for myself. USB 3.0! Gigabit Ethernet! WiFi 802.11ac, BT 5.0, 4GB RAM! 4K! $55 at most?! What the!? How the??! I know I'm not maintaining decorum at Hacker News, but I am SO mighty, MIGHTY excited! I'm setting up a VPN to hook this (when I get it) to my VPS and then do…

> I've been using the RPI2 as my HTPC/NAS

Using the Pi as a file server can be a bit flaky. The ethernet controller was an USB one, and was neither really stable or took load very well. The new PHY on a dedicated link is probably the single biggest improvement with this new revision.

The HEVC is a bit unexpected considering the high license fees and general uncertainties. Let's hope the documentation can be released as well.

Re: Raspberry Pi 4

#303

Post by tty2300 »

agumonkey wrote: post #282
elliotpage wrote: post #185

Can't wait to buy this, boot it up, play with it for four hours, then stick it in the same desk drawer with the other Pis I have bought over the years. (The upgrades look great, just my attention span is not so great)

That's why I switched to esp8266, smaller and 1$. Can fit a lot more in the same drawer.

I ordered 2 of those years ago and they are still in the antistatic bag..

Re: Raspberry Pi 4

#304

Post by nabla9 »

chongli wrote: post #269
tmikaeld wrote: post #84

Earlier quoted context omitted.

The USB 3.0 ports should give 100MB/s (Benchmarks show up to +300MB/s), and you can mirror two disks for RAID-1. With 4GB of RAM, you'd even be able to use ZFS.

With 4GB of RAM, you'd even be able to use ZFS. Does it use ECC memory? If not, you should not use ZFS. Without ECC memory, ZFS carries the nasty risk of writing good data with a bad checksum, leading to data loss which would not occur in other filesystems (those that do not try to correct errors on the fly like ZFS).

Most other filesystems don't do checksum at all, so you can't even discover that you have a data loss/or corruption.

Only difference is that other filesystems may have better tools to rescue damaged filesystem after metadata is corrupted.

Re: Raspberry Pi 4

#305

Post by fanf2 »

tmikaeld wrote: post #263
morphle wrote: post #153

Earlier quoted context omitted.

not these USB 3.0 ports. Connected with shared 4 Gbps, they only run at 4/5th, 1/2 or less of the full 5 Gbps speed.

Which means, 2 ports and two drives (not ssd) should give at least 100MB/s each. Maybe I wasn't clear enough on that. - 1Gbit ethernet - 1Gbit USB 3.0 port 1 - 1Gbit USB 3.0 Port 2 Total: 3Gbit of 4Gbit, having some margin to spare.

The Ethernet is directly connected to the SoC, it doesn't share the 4Gbit PCIe with the USB ports

Re: Raspberry Pi 4

#306

Post by mclehman »

chongli wrote: post #269
tmikaeld wrote: post #84

Earlier quoted context omitted.

The USB 3.0 ports should give 100MB/s (Benchmarks show up to +300MB/s), and you can mirror two disks for RAID-1. With 4GB of RAM, you'd even be able to use ZFS.

With 4GB of RAM, you'd even be able to use ZFS. Does it use ECC memory? If not, you should not use ZFS. Without ECC memory, ZFS carries the nasty risk of writing good data with a bad checksum, leading to data loss which would not occur in other filesystems (those that do not try to correct errors on the fly like ZFS).

In the case of a traditional filesystem, similarly unfortunate memory corruption would just affect the actual data directly. Forgoing ZFS throws out the happy path where the checksum does catch a data error and repairs it transparently.

Edit: To add on to this, ZFS doesn't do parity-based repair at the checksum level. In the mentioned case (good data, bad checksum) no copy of the block will match the checksum and there will be no supposedly-good block to copy over.

Re: Raspberry Pi 4

#307

Post by Robotbeat »

grizzles wrote: post #293

This is the death knell for x86 PCs for the consumer market. No regular user needs more than this. Developers and hardcore gamers will be the only ones left on x86. Intel will be a shadow of themselves soon. They have did such a bad job at diversifying.

Have you tried surfing the web on a Raspberry Pi 3? Even if the 4 is 3 times faster, it’ll be a frustrating experience.

Additionally, once you add in all the peripherals for a laptop, the cost is much higher than if you just bought a cheap netbook. 4GB of Ram Pi 4 is $55. $30 for a decent USB C power supply and cord, plus $50 for a display, $15 for keyboard, $15 for mouse, plus $15 for a decent SD card and/or hard drive... plus individual shipping and then you need a case.

Re: Raspberry Pi 4

#308

Post by simonh »

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

I'm in my 50s as well and may eyes are definitely showing their age, but if anything I find high fidelity screens more important to me now than they were years ago. I use 1080p 23" screens at work and the slight blurriness from pixelation is definitely noticeable. Comparatively, the 5k screen on my iMac is dramatically sharper and easier on my eyes.

I find that when my own vision is slightly blurred, add in even more slight blurring on the screen and they compound each other. On the other hand if the source image is pin sharp, it makes it easier to cope with the flaws in my own vision.

Re: Raspberry Pi 4

#309

Post by KaiserPro »

neilv wrote: post #281
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…

IIUC, you're saying that, for the Raspberry Pi designers, being open hardware is not only not a requirement, but there's actually requirements to be aggressively closed hardware in some regards?

I don't think one can paint attempting to stop counterfeit cameras (which were aggressively counterfeited) as being aggressively closed hardware.

Look Rpi have a clear goal, to get kids coding. Everything, and I mean _everything_ they do is to further that goal. One part of that is to have a platform that is, safe, easy, expandable and _cheap_. A side effect of that is that its mostly open.

Now, is it as open as say fabbing your own RISC-V SoC? no. But then that would cost a boat load of cash, and it would then be cloned and resold by third parties. Thus, no money for education. (worse still, dangerous counterfeits might be bought by schools, cause injury leading to legal action.)

So, being pragmatic, and noting that the ecosystem is far more valuable to me, and almost everyone else, than the hardware, I will accept this behaviour.

Re: Raspberry Pi 4

#310

Post by nottorp »

imtringued wrote: post #245
nottorp wrote: post #168

Earlier quoted context omitted.

Another important thing to mention: if you're compiling and logging to the sd card, buy a lot of them because they'll die on you. They're not designed for this many writes.

Why bother with obsolete SD cards then? Here is an SSD for 15€ [0]. Pair it with a 5€ USB to SATA adapter and you're ready to go. [0] https://www.alternate.de/Apacer/AS350-120-GB-Solid-State-Dri...

Also you're tripling the space needs. Add 1-2 more things and you might as well get a desktop case ;)

Sometimes it's doable, sometimes not.

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