Does a Probook 450 G9 motherboard support PCIe 4.0 transfer rates?

[rmt_]

What generation of PCIe represents the upper limit of transfer rates that the motherboard of a PowerBook 450 G9 can realize?  I understand that newer generations of PCIe storage are backwards-compatible, but why pay for PCIe 4.0 (or 5.0) if the motherboard only supports PCIe 3.0 (or lower) transfer speeds?  I can't find specifications for PCIe transfer rates.  Thanks in advance for any clarification.

[Paul_Tikkanen]

Hi:

The M.2 SSD slot must support PCIe Gen 4 SSD's because the parts list in the service manual indicates that this drive was offered as an option in the model series.

HP M16560-001 - 1TB M.2 2280 NVMe 4.0 Solid State Drive - Drive Solutions

Maintenance and Service Guide (hp.com)

Page 22:  1 TB, PCIe, TLC, 2280 M16560-001 

[rmt_]

Thanks for your reply, Paul.  I note, however, that since PCIe 4.0 would be downwardly compatible with PCIe 3.0 (or lower), hp could still list the storage as "compatible", although it wouldn't necessarily benefit from the higher transfer rates of 4.0.   So I'm still not completely confident without purchasing and testing PCIe 4.0 to confirm if there's any benefit, but at that point I've already made the purchase and may have effectively paid for something more than I might benefit from.  

I appreciate your having taken the time to respond.

[Paul_Tikkanen]

You're very welcome.

I believe that you will be fine if your PC has one of the Intel 12th gen core processors.

I doubt that HP would have offered a PCIe Gen 4 SSD in the model series if it wasn't supported.