Corsair's cmso8gx3m1a1333c9 vs cmso8gx3m1b1333c9

[Anaksy]

Hello Guys!

Could someone help me to choose between these two Corsair's laptop memory ?

I've done a lot of research but couldn't find any difference between the two, besides the difference in the nomenclature:

O8GX3M1A1333C9 VS CMSO8GX3M1B1333C9

Both are clocked at 1300Mhz and has 9-9-9-24 of latency.

Thanks!

 

[LTC8K6]

They are made with chips from different mfgs, I think. Otherwise the same.

A is Elpida chips and B chips are labeled Corsair, judging from pics on google.