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flieger11
Paper Tape
Posts: 2
Registered: ‎01-13-2019
Location: DE
Views: 74
Message 1 of 3

T470 only achieving SATA 2 speeds on Samsung 850 Evo SSD

I swapped the hard drive in my T470 for a SATA 3 Samsung 850 Evo SSD with 500GB capacity.

 

Using the default Microsoft SATA AHCI driver I get about 530MB/s Seq write (normal) but only 30MB/s Seq read. Lenovo Vantage recommended an update to the Intel Rapid Storage driver which I did. After that speeds looked normal albeit capping out at SATA 2, so about 270 MB/s read and write.

 

DRAM caching under Policies in Device Manager is activated. The drive works flawlessly in another Laptop running full SATA 3 read and write using Microsoft SATA AHCI driver.

 

I installed Samsung Magician and CrystalDiskInfo, no problems with the drive, firmware is up to date. Vantage shows no further driver updates, neither does Windows update. 

 

Any suggestions? Thanks. 

JoanGomez
Punch Card
Posts: 10
Registered: ‎01-05-2019
Location: AD
Views: 53
Message 2 of 3

Re: T470 only achieving SATA 2 speeds on Samsung 850 Evo SSD

flieger11
Paper Tape
Posts: 2
Registered: ‎01-13-2019
Location: DE
Views: 47
Message 3 of 3

Re: T470 only achieving SATA 2 speeds on Samsung 850 Evo SSD

Your problem appears to be something similar, although your drive is PCIe Nvme, not SATA. Let's do if someone can share some insight into this. 

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