Samsung 830 128GB vs 256GB Write Speed Diff

[jbsmithmac]

Why is there a 60MB/s write speed difference between the 128 and 256GB model of the samsung 830?

Samsung's site states the 128GB model as 320MB/s and the 256GB model as 400MB/s.

 

[T5BRICK]

If I recall correctly you are using a 2009 model MBP. If this is te case, the write speed isn't going to matter, you'll be capped at about 260MB/s read/write.

I think technically it is because the lower capacity drive has less storage chips so it isn't able to take advantage of as many channels as the larger drive.

 

[jbsmithmac]

If I recall correctly you are using a 2009 model MBP. If this is te case, the write speed isn't going to matter, you'll be capped at about 260MB/s read/write.

Yes your correct about my machine that I've been asking about. Regardless I wondered why...its the same model just different size.

 

[T5BRICK]

Yeah, I realized I didn't really answer your question, so I edited my post.

 

[jbsmithmac]

Yeah, I realized I didn't really answer your question, so I edited my post.

I see that now.

Well that makes for a confused consumer (think future proofing, other machine, etc). Thinking that the models are the same (even their part number) with the exception of the size designation of the model.

 

[paul-n]

Most SSDs have their full performance first with 256 GB capacity, all below usually have less chips. 128 GB versions are a bit slower, but 64 GB models are much slower.
Samsung is using 16 Flash chips on their 256 GB version and only 8 on the 128 GB model.