Legit Reviews wrote: 'This laptop memory kit is sold under part number CT2KIT51264BF160B' so I also ordered that.
But you are right the 'J' on the RAM module label is missing.
I have not tested the kit yet (waiting for Intel SSD 530 series).
Hope somebody can help us. If the kit is not OK I will go with
Kingston 4 GB KVR16LS11/4
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I use G.Skill Ripjaws DDR3L-1600 2x8GB SODIMM kit and no problems so far.
Series: Ripjaws SO-DIMM
Memory Type: DDR3
Form Factor: SO-DIMM
Channel Config: Dual-channel
Capacity: 16GB (8GBx2)
Tested Speed: 1600MHz
CAS Latency: 9-9-9-28
Heat Spreader: No
You can read more about thoose memorys on http://aphnetworks.com/reviews/g_skill_ripjaws_f3_1600c9d_16grsl_2x8gb
Crucial answered me to day:
Thank you for your email. I am very sorry to hear that you are having an issue
with our part number CT2KIT51264BF160B.
This isn't a part that we are
recommending at present and what you should have is the same part number but
with a J at the end.
The difference between each part is that the J part
only has 8 chips on the memory and the NON J has 8 chips on both sides. This
represents the density.
It looks like your laptop prefers the J part as
it is high density so you would need to exchange the KIT that you have.
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.....
I see in this thread that Crucial CT102464BF160B (Crucial part number CT5042582) is not compatible, yet is is still listed as "customer-reported compatible" on the recommended memory page. This is the memory that Crucial recommended for this platform. I have not installed and tried it yet. Should I bother, or should I just return it to Crucial?