What are the read and write speeds of M4 Air with 256, 512 and 1TB SSD?

[hajime]

Can users please test and post the results?

 

[prism]

I’m surprised that none of the reviewers tested the ssd speeds with blackmagic, especially on the entry 256. If you remember, apple had crippled the ssd on the m2 mba by only providing a single 256 chip. That was fixed with the m3 but now that they cut the price of the m4, I’m wondering if they cut corners again.

 

[prism]

ok, tomsguide tested the 256gb on Blackmagic with write/read speeds of 1919/2891. Not as good as the 512 but double the read speeds of the 256gb m2.

 

[nikhsub1]

ok, tomsguide tested the 256gb on Blackmagic with write/read speeds of 1919/2891. Not as good as the 512 but double the read speeds of the 256gb m2.

Seems like they are back to using a single module for the 256GB machine.

 

[prism]

Seems like they are back to using a single module for the 256GB machine.

With double the read speeds of the m2? I think not.

 

[clv101]

Probably the same as in the iMac?

 

[Howard2k]

512GB 13" 10/10 - 3458 / 3013 (write/read)

 

[Teletypewriter]

2TB 14" 10/10 Base M4 MacBook Pro - Read: 3,089 Write: 3,283

 

[Nismo73]

new 15" 16gb/512gb. This is about the top I've seen.

 

[Cliff3]

1TB drive using 5GB file sizes: 2864.2 read and 2959.8 write

 

[JPack]

I’m surprised that none of the reviewers tested the ssd speeds with blackmagic, especially on the entry 256. If you remember, apple had crippled the ssd on the m2 mba by only providing a single 256 chip. That was fixed with the m3 but now that they cut the price of the m4, I’m wondering if they cut corners again.

Standard practice for teardown videos in China is to include showing upgrading base storage.

Dual NAND confirmed.



Also, if $499 M4 Mac mini is dual chip, no reason to cheap out in MBA. Apple learned its lesson after M2 MBA.

 

[sleestak]

Getting 1966 write, 2882 read with a 16/256 M4 Air.

 

[pksv]

2TB 14" 10/10 Base M4 MacBook Pro - Read: 3,089 Write: 3,283

So 2TB is slower than 1TB?

 

[pksv]

Combined all from this post:

M4 256GB - 1919 / 2891 (write/read)

13.6" M4 10/10 512GB - 3458 / 3013 (write/read)

14" MBP M4 10/10 2TB - 3283 / 3089 (write/read)

15" M4 512GB 3437 / 3034 (write/read)

M4 1TB - 2959 / 2864 (write/read)

M4 256GB - 1966 / 2882 (write/read)

There is some strange inconsistency, the 512 variant seems to be the fastest which doesn't make sense.

 

[nikhsub1]

I have 15" 512/24 and my best blackmagic tests on 5GB are 3466 write and 3040 read.

 

[nikhsub1]

So while the 256 is 2 modules, they are definitely slower. Maybe using up old modules on hand?

 

[JPack]

Combined all from this post:







There is some strange inconsistency, the 512 variant seems to be the fastest which doesn't make sense.

Makes sense. Consider TLC and QLC. Also Kioxia and Sandisk variants.

 

[pksv]

TLC and QLC.

I don't think Apple uses different cell for different sizes

 

[SammyG7]

I watched the teardown, and the M4 has a single NAND chip so I think it's going to be the same as before, where the 256 is slower. two NANDs even on the 256GB.

edit: Thanks @JPack for the correction

 

[JPack]

I watched the teardown, and the M4 has a single NAND chip so I think it's going to be the same as before, where the 256 is slower.

Teardown clearly shows two chips. They even upgraded it to 1TB.

视频 - 微博

t.cn

 

[hajime]

Combined all from this post:







There is some strange inconsistency, the 512 variant seems to be the fastest which doesn't make sense.

I think somebody posted the speeds of a MacBook Pro rather than those of a M4 MacBook Air.

 

[pksv]

Teardown clearly shows two chips. They even upgraded it to 1TB.

视频 - 微博

t.cn

Something completely unrelated, but how bad is that video player? Just wow, attrocious.

 

[JPack]

Something completely unrelated, but how bad is that video player? Just wow, attrocious.

Works perfectly fine for me.

 

[SammyG7]

Teardown clearly shows two chips. They even upgraded it to 1TB.

视频 - 微博

t.cn

My mistake! Thanks for the correction

 

[pksv]

Works perfectly fine for me.

- no spacebar play/stop
- no left/right arrow to go forward or backward
- weird delays
- no registering clicking on timeline (only half of the times)
- you have to click excatly on the timeline that is few pixels thick

Default html5 video player is 10x better.