3 ms·
And the pi hat only supports 500MB/s, so an m.2 ssd is really overkill
by SushiHippie 2y ago
And the pi hat only supports 500MB/s, so an m.2 ssd is really overkill
- zamadatix 2y agom.2 is a form factor, not a speed. It could have been the SATA type m.2 instead of the NVMe type m.2 but then it would have needed a SATA controller on the PCIe bus for no benefit. The cost/GB of cheap (SATA or NVMe) drives is about the same regardless if peak read is 500 MB/s or 1500 MB/s anyways.
- SushiHippie 2y agoOkay fair, I just always think of NVMe drives with 5000-7000 MB/s read speed when M.2 gets mentioned and I misremembered that SATA (non M.2) SSDs were cheaper.
- Havoc 2y agoPretty sure the rasps are single lane gen 3. So 1 gig a sec max
- SushiHippie 2y agoSecond sentence in TFA is: > It provides fast (up to 500 MB/s) data transfer
- zamadatix 2y agoNeither of these takes is necessarily incorrect. Officially yes, out of the box it's 1x PCIe 2.0 and you get ~500 MB/s. There is also an boot flag to switch the PCIe from 2 to 3 and it doubles the speed to ~1000 MB/s. That mode is not officially certified as PCIe 3.0 compliant though due to the way its run but it seems to work for just about anything so long as you don't use a really long ribbon cable. https://www.jeffgeerling.com/blog/2023/forcing-pci-express-gen-30-speeds-on-pi-5 https://www.jeffgeerling.com/blog/2023/forcing-pci-express-g...
- hamandcheese 2y agoMy concern is that I'd like to be able to swap SSDs with other standard form factor devices (I.e. any recent PC desktop and many laptops) rather then buy something specifically for a raspberry pi.