Performance Gain PCI-E Mini with Primary Drive already SSD?

[nelson_chow]

HI everyone,

I have a T420S, and it says Enhanced Experience 2.0 RapidDrive on sticker on the machine.

I already runs an SSD drive.

Question: If I now add a PCI-E Mini Drive, and make it primary, would I achieve any performance gain?

(I read some posts on this forum, most threads concerns PCI-E SSD with Traditional Mechnical Drive, not PCI-E SSD with SSD Primary Drive, hence the question)

Best wishes, have a good weekend,
Nelson

[lead_org]

The ThinkPad doesn't support mPCIe SSD, it supports mSATA, which operates at 3.0 Gbps

[nelson_chow]

Ah, ok, so will there be a performance increase if I use a mSATA drive if my primary drive is already an SSD?

[dr_st]

Generally, no. Maybe if your current SSD is slow/bad and you invest in a very high-end mSATA SSD, then yes. But the odds are low.

[jayton4]

I use the mSATA slot in my T420s for additional storage, not performance. As dr_st said, you would have to have a really old and crappy SSD for the mSATA to give a performance boost to.

The Crucial M500 and Samsung Evo lines are selling for very cheap right now. I may upgrade my 256GB mSATA to a 480GB soon, but the prices just keep falling.