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‎01-09-2022 12:17 AM

HP Recommended
Product: HP Notebook 15-Da0077tx
Operating System: Microsoft Windows 10 (64-bit)

So I purchased a WD SN550 (500gb) NVMe PCIe 3.0 x4 SSD to enhance performance. The SSD isn't running quite as fast as. It's rated at 2400 MB/s sequential read, 1750 MB/s sequential writes according to the western digital datasheet, but my benchmark tests using Crystal Diskmark have it running at 1600 MB/s sequential read and 1200 MB/s sequential write.

 

I think the problem is that according to Sandra lite and Wd dashboard, the PCIe slot the SSD is connected to is only running at x2. Frustratingly according to WD Dashboard and Crystal DiskInfo, the maximum link width is 4x, but the current link width is 2x. Below mentioned snap of WD Dashboard and Crystal Disk Info

 

I've updated the BIOS to the most recent version

F.38 Rev.A 50.7 MB Sep 7, 2021

, but I don't see any options there to assign PCIe lanes. I've tried seating the SSD more firmly in the M.2 slot, and also removed the HDD in case the SATA controller was stealing a PCIe lane.

The motherboard is 84A7 version 80.38.

 

my queries

Why SSD is running at x2 lanes only? beside laptop manual says pcle 3.0 x4 supports.

What are possibilities to make it work on x4 lanes?

plaese give solution i need to perform at high speed capability. 

Screenshot (8).pngScreenshot (11).png

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