Compatibile memory for TP X1 Extreme (Gen1)?

[Baterka]

Is Crucial 2666MHz CL19, SR x8 CT8G4SFS8266 compatibile with Micron 2666MHz CL19 MTA8ATF1G64HZ-2G6E1 what I have in my ThinkPad X1 Extreme?

 

Any difference from if I buy exact same stick? Performance, etc.?

[Eighjan]

2 minutes ago, Baterka said:

Is Crucial 2666MHz CL19, SR x8 CT8G4SFS8266 compatibile with Micron 2666MHz CL19 MTA8ATF1G64HZ-2G6E1 what I have in my ThinkPad X1 Extreme?

 

Any difference from if I buy exact same stick? Performance, etc.?

One stick of each, as a pair...?  I'd try and avoid it, if possible.  A matched pair would be better, yes...

[Baterka]

1 minute ago, Eighjan said:

One stick of each, as a pair...?  I'd try and avoid it, if possible.  A matched pair would be better, yes...

One of each (8GB original stick + 8GB Crucial)

[Eighjan]

Just now, Baterka said:

One of each (8GB original stick + 8GB Crucial)

Personally, I'd go with a matched pair.

[Haro]

12 minutes ago, Baterka said:

 

Any ddr4 so dimm should work 

A slower stick will result in both sticks running at the slowest speeds 

And different cas latency for the most part should work.

[5x5]

It'll work. At worst it might drop the clock a bit but it will work fine

[Baterka]

4 hours ago, 5x5 said:

It'll work. At worst it might drop the clock a bit but it will work fine

And how to check clocks after I install it? CPU-Z?

[5x5]

Just now, Baterka said:

And how to check clocks after I install it? CPU-Z?

HWiNFO