In the motherboard in my previous post you have 4 "lanes" in every NVMe device, and there are 3, so this makes a toal of 12 lanes
1969MB/s * 12 = 23628MB/s
In the expansion card posted by cypher i guess there was 16 lanes (because is intended to be connected to the slot of a graphic card, and that slots uses to be x16), so...
1969MB/s * 16 = 31504MB/s
We are playing this game using processors that are very common, but if we want to push this to the next level we could use an AMD EPYC processor that have a massive amount of "lanes".. and because we are multimillionaire and we have a company to manufacture custom motherboards we are going to design one where most/all the "lanes" are dedicated to create an "army" of MNVe devices... to connect all them in RAID0 and beat the "world storage speed" record... yeah this should work
Is the same principle in all this examples, and is not going to happen at this levels (unless some hardware manufacturer builds a monster like that).. but maybe is going to happen at small scale
The motherboard i mentioned in the link is a good example, that thing can break world speed records, i dont see anyone in the comments mentioning it but the only requirement is the BIOS needs to be able to create a RAID0 with the 3 NVMe devices... and it needs to be able to boot from NVMe, thats all... my bet is that motherboard is going to support it
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But now lets return to the ground of mortals... everyone of that NVMe devices is going to be like 200$, if you are going to buy 3 thats 600$ + another 200$ for the motherboard + another 200$ for the RAM + another lets say... 200$ for the CPU... etc... (yeah im rounding every big component in 200$ it works fine for me), and keep counting because are needed more components to build a PC
And the speeds of that setup is not going to beat the PS5 by far, the calculations i made would be a more realistic if we use a max speed of 5000MB/s because thats the speed record of the products that are "on sale"
https://www.gamingpcbuilder.com/best-m-2-nvme-ssd/
The winner at read speeds is the "sabrent rocket"... but note it have 5000MB/s (and cerny said they are achiving 5500MB/s in the PS5)
If you create a RAID0 with 3 "sabrent rocket" you are going to have a theoretical 5000MB/s * 3 = 15000MB/s
In the practise the speed is a bit slower... rought numbers i calculate something like 13000MB/s
Yeah thats a lot more than the PS5 but the PS5 (using the same technology, equivalent to the sabre rocket) is doing 9000MB/s
with a single NVMe (because the infamous kraken)
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@Agoni212 i think the 12 channels are located in between the flash chips and the controller chip (both inside the NVMe device), the controller chip access the flash chips "in paralell", so is like the example i mentioned about the monkeys but inside the device

Look at this schematic, the channels are the horizontal arrows at right
https://www.extremetech.com/extreme/210492-extremetech-explains-how-do-ssds-work
Internally have 12 channels, but the connection to the motherboard is made by "4 lanes of PCIe version 4", and this is capped at a theoretical max of 7876MB/s (raw) and 14000MB/s (with the kraken)
The awesome thing is the kraken have around the same performance than 2 NVMe devices in RAID0 (using the fastests NVMe devices that exists in 2020)