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‎09-17-2018 09:43 PM

HP Recommended
Product: 15t-da000x
Operating System: Microsoft Windows 10 (64-bit)

So I purchased a Samsung EVO 970 NVMe PCIe 3.0 x4 SSD to use in this laptop that I got super-cheap during a summer sale. Unfortunately, the SSD isn't running quite as fast as I'd like (although much faster than the 5400rpm HDD the laptop came with). It's rated at 3500 MB/s sequential read, 2500 MB/s sequential writes according to the Samsung website, but my benchmark tests using Samsung Magician have it running at 1739 MB/s sequential read and 1682 MB/s sequential write.

 

I think the problem is that according to both Samsung Magician and HWiNFO64, the PCIe slot the SSD is connected to is only running at x2. Frustratingly according to HWiNFO64, the maximum link width is 4x, but the current link width is 2x.

 

I've updated the BIOS to the most recent version F.04, 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. It's still only at x2. Any other ideas?

 

The motherboard is 84A6, and the chipset is "Intel Kaby Lake-U + iHDCP 2.2 Premium PCH". I think this means 12 PCIe lanes for the CPU, and 24 lanes on the chipset, but really have no idea - couldn't find anything on specs for the motherboard. The HP spare parts number is L20371-601 if that helps.

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