iPhone 8/Plus iPhone 8 plus slower than 7p is due to NAND performance?

[changguangyu]

Disk performance( especially random io) is very important to the speed of whole device.
And for the SSD , the larger the faster.
So is 64g tlc of iphone 8 slower than 128g tlc of iphone7??

 

[estabya]

Here is my 256GB 7+

Slower across the board other than random read, which is slightly faster.

 

[jefffriscotx]

actually you can not tell the difference.
as you never have a chance to run the cpu at 100%

 

[thadoggfather]

yeah flash speed won't matter for real world usage speed,

its probably iOS 11 being buggy coupled with new a11 SoC that needs ironing out, vs actually being slower