PCIe4 compatible?

[BabaBao]

I wanted to upgrade my laptop's SSD to 2TB and was wondering whether that capacity, as well as PCIe 4, were supported or not.

The laptop is an HP Spectre x360 13-aw2024na.

HP's product specifications don't mention anything about it. https://support.hp.com/si-en/document/c06970576

Digging a bit into it using I found that the Motherboard is HP 8709.31.32 and the currently installed SSD is a KIOXIA XG6 Series 512 GB (KXG6AZNV512G), a PCIe 3 one.

According to Intel, The i71165g7 processor supports PCIe Gen 4 for the Microprocessor, but PCIe for the Chipset / PCH. https://www.intel.com/content/www/us/en/products/sku/208662/intel-core-i71165g7-processor-12m-cache-...

So, my question is whether the SSD is connected directly to the Microprocessor or the the Chipset / PCH.

Also, are PCIe 3 SSD more power efficient on average than PCIE 4?

[banhien]

@BabaBao 

No update from HP, still using old series manuals:

              https://support.hp.com/au-en/product/hp-spectre-x360-convertible-laptop-pc-13-aw2000/35610627/manual...

What does it have now ? From its specs, it is PCIe 3x4. PCIe 4 is backward compatible therefore you can use PCIe 4 for your machine. 

More reading:   https://insights.samsung.com/2022/10/17/pcie-4-0-vs-pcie-3-0-whats-the-difference-2/

Regards.

[BabaBao]

Thanks for the answer. As stated it currently has a KIOXIA XG6 Series 512 GB (KXG6AZNV512G).

I know PCIe is backwards compatible, but I am also concerned about power efficiency. If a PCIe 3 consumes less power than a PCIe 4 bottlenecked to PCIe 3 speeds then I'd rather buy the former.