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is there a diff from up to 400mb to up to 260mb write speeds?

400 - 260 = 140 mbs

Yes there is a difference and you will notice it when you run bench mark programs, other then bench marking I doubt you could tell the difference. Both are extremely fast.

I have the M4 256GB, very happy with it.
 

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400 - 260 = 140 mbs

Yes there is a difference and you will notice it when you run bench mark programs, other then bench marking I doubt you could tell the difference. Both are extremely fast.

I have the M4 256GB, very happy with it.

i feel it, i think im gonna settle with the m4, has amazing reviews, im sure i cant go wrong with it!
 
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