Hardware Samsung Evo Plus vs Pro Plus

[AskingForTrouble]

The prices for these SD cards are near identical, with the Pro Plus version usually only being a dollar or five more depending on the size. Is there any benefit to using a Samsung Pro Plus in a 3DS over an Evo Plus after formatting it to 32k or 64k?

 

[Hayato213]

Won't really matter a lot as the 3ds can't really use the A2 speed. 64k would boot slightly faster but it would also take up more space on the card.

 

[AskingForTrouble]

Won't really matter a lot as the 3ds can't really use the A2 speed. 64k would boot slightly faster but it would also take up more space on the card.

64k is only useful for very specific SD cards, I have a 128gb Evo Plus that has to be formatted in 64k or my GBA injects won't display properly. I also have a 256gb Evo Plus that will have the same issue unless it's formatted to 32k. That's why I said either 32k or 64k.

 

[The Real Jdbye]

The prices for these SD cards are near identical, with the Pro Plus version usually only being a dollar or five more depending on the size. Is there any benefit to using a Samsung Pro Plus in a 3DS over an Evo Plus after formatting it to 32k or 64k?

No. The 3DS' SD reader is quite slow.
You can copy cias to it slightly faster from a PC, but 3DS games aren't that big, so you won't be doing a lot of copying anyways.

 

[Hayato213]

64k is only useful for very specific SD cards, I have a 128gb Evo Plus that has to be formatted in 64k or my GBA injects won't display properly. I also have a 256gb Evo Plus that will have the same issue unless it's formatted to 32k. That's why I said either 32k or 64k.

Do you even know how cluster work?

 

[AskingForTrouble]

Do you even know how cluster work?

*sigh*

Yes but please elaborate

 

[Hayato213]

*sigh*

Yes but please elaborate

Like I said the 3DS can't use the A2 speed, so only benefit is when you copy files from the computer to the SD as it will have a faster write speed A1 card and class 10 card. 64kb allocation cluster would take up more space than 32kb cluster, but you also gain faster boot time for the 3ds.

When it come to cluster if you have a file of size (4K + 1) bytes, you will need another cluster to store the extra byte. If you have a 4K cluster size you waste only (4K - 1) bytes. If you have a 64K cluster size you will waste (64K - 1) bytes. With 4K clusters you waste on average, across all files on the disk, 2K bytes per file with the 'extra' cluster. With 64K clusters you waste on average 32K bytes per file with the 'extra' cluster. So if you increase cluster size you will waste on average 30K bytes per file!

 

[ghjfdtg]

Not sure where you got the "- 1" from. Clusters are exact power of 2 sizes. Only files have a limitation because in 32 bits you can't encode 4 GB (2³²).

 

[Hayato213]

Not sure where you got the "- 1" from. Clusters are exact power of 2 sizes. Only files have a limitation because in 32 bits you can't encode 4 GB (2³²).

If you have a FAT32 card with 32GB or more, with a cluster of 32KB, if you store 10 files of 1KB on this partition this would use 10 * 32KB= 320KB, of disk space, and 320KB-10KB=310KB would be wasted.

 

[Kwyjor]

I also have a 256gb Evo Plus that will have the same issue unless it's formatted to 32k.

That's very unusual and my first instinct would be to suggest checking that it is indeed formatted with 32k clusters and not 64k clusters.