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Need Page Size info on Neutron SSD's

M

mtl77733

Member
I bought a refurbished Neutron GTX 240 GB SSD with part # CSSD-N240GBGTX/RF2. Based on the published specs at NewEgg where I bought this, I believe it is the older (and faster) version with 24 nm Toshiba MLC NAND (the new version has 19 nm Toshiba MLC). Assuming it has the larger 24 nm NAND, I would like to know the Page Size of this SSD for the purpose of optimizing its partition alignment. I am going to enter this info into this partition alignment calculator: http://www.techpowerup.com/articles/other/157

I also bought a brand new Neutron Series 256 GB SSD with part # CSSD-N256GB3-BK and would like to know the Page Size of this SSD as well. Based on its 256 GB size, I believe it is the new version with 22 nm SK Hynix NAND (the old version was 240 GB with 25 nm IMFT NAND).

It's so hard to find these info, I would really appreciate your help. Thanks in advance!
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If you align to an MB boundary (default for most OS utils, nowadays), you'll be fine. Both drives have good steady state performance (more so from the 240GB, as you'd expect), and once you use them for awhile, aligning perfectly to erase blocks is 🙄, because the flash itself will be remapped all over the place, and the FS doesn't care, so long as you have 4K alignment.
 
Cerb said:
If you align to an MB boundary (default for most OS utils, nowadays), you'll be fine. Both drives have good steady state performance (more so from the 240GB, as you'd expect), and once you use them for awhile, aligning perfectly to erase blocks is 🙄, because the flash itself will be remapped all over the place, and the FS doesn't care, so long as you have 4K alignment.
Click to expand...

Let's say I create the partition with 1024K offset and 4K cluster size, will that be fine? So I don't really need to make the partition's cluster size the same as the SSD's page size?
 
I formatted my Neutron with 16KB clusters to match the page size.
Will run some benchmarks this weekend (probably Sunday). I'm kind of surprised all the review sites and bench tools are sticking with 4KB when all the current SSD controllers use either 8KB or 16KB pages.
 
glugglug said:
I formatted my Neutron with 16KB clusters to match the page size.
Will run some benchmarks this weekend (probably Sunday). I'm kind of surprised all the review sites and bench tools are sticking with 4KB when all the current SSD controllers use either 8KB or 16KB pages.
Click to expand...

So your Neutron has 16K page size? Is it the GTX or the previous Neutron series? What is its part #?
 
Micron's high-density 20nm chips have 16KB pages, and 8MB erase blocks. Hynix: ??? (but, isn't part of the whole reason to buy a Neutron so that you don't really have to worry about such things?).
 
mtl77733 said:
So your Neutron has 16K page size? Is it the GTX or the previous Neutron series? What is its part #?
Click to expand...

Regular Neutron, but I think they all have 16KB page size?

Thing is, the AS SSD scores seem subpar (see the other SSD alignment thread). I'm not sure if this is because the benchmark is doing unbuffered 4KB operations which the OS has to do as 16KB because of the cluster size or what, and 4KB seems to be the standard for most benches...
 
Cerb said:
Micron's high-density 20nm chips have 16KB pages, and 8MB erase blocks. Hynix: ??? (but, isn't part of the whole reason to buy a Neutron so that you don't really have to worry about such things?).
Click to expand...

In what way is the Neutron supposed to free you of such worries versus buying another brand of SSD?
 
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