01-13-2019 10:24 AM
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.
01-13-2019 11:51 AM
I have a similar problem
It's all very strange ....