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Upgrade Raspberry Pi 4 with a NVMe boot drive

alexellisuk.medium.com

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Re: Upgrade Raspberry Pi 4 with a NVMe boot drive

#41
post #23

One needs to login to read. I'm sorry, medium is not a very charitable blog host, and will cost the blog a large part of its audience with these new rules, unfortunately.

True, but this IS Hacker News, and most of us in here can easily get around this particular one .

Yes, but it's pretty annoying nonetheless.

https://outline.com/aS4yWR

Re: Upgrade Raspberry Pi 4 with a NVMe boot drive

#42
post #32

This part is strange: "NVMe drive — an M.2 SSD looks almost identical, but has two notches instead of one. Generally an SSD will perform to the tune of hundreds of MB/s instead of thousands." First, both are SSDs, so I don't know what he is trying to compare. Both use M.2, but different keys from the sounds of it (the "notches"). M.2 drives can be either SATA or NVME, but it is harder to come across a SATA M.2 drive…

[deleted]

Re: Upgrade Raspberry Pi 4 with a NVMe boot drive

#43
Honestly I'd get rid of the USB and use the Pi 4 compute module with NVMe next year.

USB connectors suck balls, one bump or connector dangling over the edge of your desk that gets hit by a hip and you have a device reenumeration, no idea what havoc that would have on the kernel that's running off it.

USB is evil. Never use it for anything mission critical.

Re: Upgrade Raspberry Pi 4 with a NVMe boot drive

#44
post #10

Does anyone know any board that is similar to RPi 4, with 8GB of RAM or more and a SATA port or an nvme slot? ARM would be great.

Nvidia Jetson TX2 https://www.siliconhighwaydirect.co.uk/product-p/945-82771-0...

The price difference though...

Re: Upgrade Raspberry Pi 4 with a NVMe boot drive

#45
post #10

Does anyone know any board that is similar to RPi 4, with 8GB of RAM or more and a SATA port or an nvme slot? ARM would be great.

Considerably more powerful and expensive, but the Jetson TX2 or Xavier NX fits this niche quite well.

If you're going to spend $400 for a Jetson, you might add another $100 and just get a powerful tablet and bet better performance

Re: Upgrade Raspberry Pi 4 with a NVMe boot drive

#47
post #3

I'd be interested if one of the various hacks for PCIe ( https://hackaday.com/2019/07/10/giving-the-pi-4-pci-express/ ) to plug it in natively would work and, if yes, at what speed.

Afaik its limited to 3 gigabyte per second, so just plugging it into the usb 3 port should give the same speed.

Closer to 3 gigabits than 3 gigabytes.

Re: Upgrade Raspberry Pi 4 with a NVMe boot drive

#48
post #16
post #4

This is just plugging in NVMe over the USB 3 port? I was expecting this to be soldering something to PCIe lanes coming out of the SoC. Is this going to be any better than using an SSD with UAS which is what I'm doing already? ( https://rwmj.wordpress.com/2020/09/24/raspberry-pi-4-running... )

I am looking forward to a future where PCIe devices might be connected too. I would really appreciate it if someone other than Intel would kindly please start doing Thunderbolt. Now that USB4 is official, adding PCIe connectivity would be a very good perk for these next generation systems. So far though no one has registered interest. Please can someone other than Intel & Apple prioritize better connectivity? AMD? Me…

Zen-4

Re: Upgrade Raspberry Pi 4 with a NVMe boot drive

#50
post #16

Earlier quoted context omitted.

I am looking forward to a future where PCIe devices might be connected too. I would really appreciate it if someone other than Intel would kindly please start doing Thunderbolt. Now that USB4 is official, adding PCIe connectivity would be a very good perk for these next generation systems. So far though no one has registered interest. Please can someone other than Intel & Apple prioritize better connectivity? AMD? Me…

Many AMD enthusiast motherboards ship with Thunderbolt. It's a straightforward technology to implement and I believe it is now royalty free. The only implementations are Intel's though and I'm sure they're expensive. Expansion is a complicated business model. Apple doesn't even ship headphone ports. The AirPods are smash hit, not least because when you sell a $1,100 device a $100 accessory suddenly seems really well…

Intel's reference designs for thunderbolt are behind NDAs so it's a pain in the ass to implement on a PCB and I don't think the controllers themselves (or their datasheets) are easily sourceable either. The Pi foundation has probably got the pull to do it but it would take quite a bit of effort since it would make the Pi an easily available competing reference design, possibly running into internal politics at Intel.
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