Dell Inspiron 5400 AOI. Upgrade SSD M.2 NVMe PCIe 3.0 to SSD M.2 NVMe PCIe 4.0

the chipset PCIe is 3.0

According to specification of Intel® Core™ i7-1165G7 Processor:

https://ark.intel.com/content/www/us/en/ark/products/208662/intel-core-i71165g7-processor-12m-cache-up-to-4-70-ghz.html

- Intel® Thunderbolt™ 4 Yes

- Microprocessor PCIe Revision Gen 4

- Chipset / PCH PCIe Revision Gen 3

And Key features on Tiger Lake UP3 https://www.intel.com/content/www/us/en/products/platforms/details/tiger-lake-up3.html

• Thunderbolt™ 4/USB4 and PCIe* 4.0 (CPU)

the CPU's PCIe lane in a desktop pc is typically reserved to PCIex16 slot for discrete video card.  in an AIO there is no such slot physically but the lane is possibly still reserved for optional discrete gpu chip (some AIO has option to install additonal gpu chip on mobo).  the ssd does not get to enjoy those.  they use chipset PCIe lanes which are slower.  I would not get too hung up on that as I have a 5400 and it runs pretty fast already.  the 5400 is a mainstream consumer pc not targetting high end user pushing for benchmark of storage.  the PCIe3 ssd is good enough for majority users imo.

You are absolutely right, PCI Gen 3.0 is fast enough. Anyway a PCIe Gen 4.0 SSD has PCIe Gen 3.0 compatibility, so I will buy a SABRENT 2230 M.2 NVMe Gen 4 1TB PCIe 4.0 X4 even if it only goes at PCIe 3.0 X4 speed. Thanks for your answer.

@redxps630​ it is difficult to find SSD 2230 Gen3 in the market of recognized brands (Corsair, Kioxia, Sabrent, WD...), almost all of them have discontinued, all the ones I find are Gen 4. That's why I have these doubts.

depends on the size of ssd I suppose but on us eBay site plenty of 2230 ssd.

KBG40ZNS1T02

Kioxia SSD 1TB BG4 M.2 2230 30mm KBG40ZNS1T02 NVMe PCIe Gen3 x4 Solid State Drive

My 5400 stock ssd is kioxia 512gb, which is plenty as I do not save big files.