these two iPhone's in front of me,

they look to be exactly the same, right?

I mean, iPhone 7's,

matte black finish.

For the most part they are -

or are they?

Hmmmmmmm?

Ok, fine, they are a little bit different.

this one over here is 256GB model.

These one over here is a 32GB model.

Now:

when you walk into the store

and you decide which version

you're going to purchase,

you think:

the 32GB model is cheaper

I just wanna get in at the cheapest price point

cuz I don't need all that much storage.

But.

The story's a little bit deeper than that.

Apple might not be giving you the whole picture here.

Turns out that the 32GB model

might be substantialy slower

than the larger capacity models.

Not all storage is created equal.

Not all of it is the same speed.

And what happened here,

Apple probably went a little bit chintzier

on the lower capacity models

in terms of the quality or caliber of storage.

Hence, a speed difference.

Now I'm going to test this out today

So open your eyes.

So this one on the left over here,

capacity: 248.8 gigabytes of course

that's the formatted size that makes

this one to 256 gigabyte model.

27.85 gigabytes, that makes this the formatted size

of the 32 gigabyte model - you can see there.

I've got something on here

called performance test. From your CPU,

to your memory, to your storage - which is the

thing we're interested in today.

If I tap on storage write speed,

you can see 359 megabytes per second.

The read speed 851 megabytes per second.

Now, over on the right here,

let's go ahead and hit the storage write.

You can already see how

much slower that was just by watching

the bar move along

that's 42.4 megabytes per second

the read is not such a big deal, right?

The less expensive ssds almost always

get hit in the write performance this

read speed is in the same neighborhood

as the 256 gigabyte model, but the write

speed holy smokes you're talking about

almost 10 times faster write speeds on

the larger capacity iPhone 7.

Let me paint a picture: I've got a laptop over here.

This laptop has some movies on it

some movies and iTunes, Star Wars being

one of them.

Never mind the synthetic benchmark, let's

transfer it over like any normal user

would do.

So let's kick it off,

the 256 gigabyte. I'm going to plug it in.

I'm going to begin to transfer we're

going to time it. Nothing else is syncing

on this iTunes besides this movie file

for comparison

it's a 4.2 gigabyte 1080p video file

Star Wars a New Hope.

I'm gonna use another

device just for the purpose of having

a clock running.

3...

2...

1...

Okay, 2 minutes 34 seconds around

two-and-a-half minutes for 4.2 gigabyte file.

Let's eject this device and replace

it with a 32 gigabyte model.

Select Star Wars New Hope, 4.2 gigabytes in...

3...

2...

1...

Now keep an eye on this one guys

there we go 3 minutes and 40 seconds!

The evidence is there. So the bar finish

and I bet if you walked into an apple

store and you ask the employee what was

the difference between 32 gigabyte model

and the 256 gigabyte or 128 gigabyte

model, they would tell you, "Oh sir, ma'am,

miss, it's just the amount of stuff you

can store on there." Not exactly true.

If you're media head, you're constantly

transferring large, files pictures, videos

there's all types of scenarios where

having a slower write speed on your

device could affect performance as you've just seen.

I don't think it's worth the

performance hit considering the savings.

It would be nice, though, if Apple was a

little bit more transparent about that

performance difference. I don't think

you'll find people saying in the apple

store, so that's why I'm doing it for you.