IBM 20L0265 memory compatible with 600 or only 600X?

[cure]

The IBM site lists 20L0265, 128 MB PC100 memory, as compatible only with the 600X. But a seller is trying to convince me that it is backwards compatible with 01K1153, 128 MP PC66. I am looking for memory for my Thinkpad 600 (2645-A1U PII updated to 366 mhz) that is PC66 and don't want to have a problem after the fact.

Thanx.

[whizkid]

I won't guarantee anything, and if you are dubious, stay away. There are plenty of places to buy memory that will guarantee compatability.

That being said, I recently tried a 256MB PC100 stick from my 600X in a 570 (that is supposed to use PC66 and uses the same chipset as the 600) and it did work for the light testing I did.

So... in my experience, it might work, or it might not. :) Sorry to be of so little help.