I recommend using high density CT51264BF160BJ and not to use CT2KIT51264BF160B
CT2KIT51264BF160B is somtimes listed as compatable but sometimes not.
I know CT51264BF160BJ is OK but CT2KIT51264BF160B may cause problems.
e.g
Thanks Jan,
I also sent a question to Crucial regarding this and got this reply:
The different between these parts is the density meaning
the number of black DRAM chips that make up the module. Part CT51264BF160B is a
low density version which will have 16 chips in total. Part CT51264BF160BJ
(note the J at the end) is high density meaning it will use only 8 DRAM chips
on the module.
The Intel D54250WYK will accept high density 4GB
modules only and this is why you are experiencing instability.
So Legit Review sent us in the wrong direction.....
Guys, it looks like the Crucial memory part # CT102464BF160B was tested in our labs, but it did not pass.
It was a mistake to include it on the list. We apologize.