memory upgrade PC5300 versus PC5400

[Rainman4500]

lenovo seems to only support PC5300 Cl5 memory upgrade for the X61 tablet.

I was thinking of buying a second GIG online, any suggestions that are no trouble or problems.

Can I simply buy PC5400 which is fair more available?

Thanks

[mfbernstein]

Yes, there is no real difference between the two (675MHZ vs. 667MHZ), it's basically a marketing ploy by memory manufacturers.