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JustinLim

macrumors newbie
Original poster
Sep 26, 2022
7
8
I got iPad Air 4,iPad pro m1 on hand to compare with m2 12.9 iPad Pro. All have 256gb as ssd storage. Using jazz disk lite to test n result is showing that m2 256gb version only 1.5gb/s read n write. The result surprised me because I thought this year only 128gb version ipp ssd is downgraded but now mine 256gb is also affected. 0FDF5643-3764-4BB9-B50B-2492DD604345.png 45EEFD38-0205-4FCA-B81C-5F6A6FE046D7.jpeg 2ECF9176-85C7-4403-97FC-168F60718AEB.jpeg
 
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floral

macrumors 65816
Jan 12, 2023
1,011
1,232
Earth
I got iPad Air 4,iPad pro m1 on hand to compare with m2 12.9 iPad Pro. All have 256gb as ssd storage. Using jazz disk lite to test n result is showing that m2 256gb version only 1.5gb/s read n write. The result surprised me because I thought this year only 128gb version ipp ssd is downgraded but now mine 256gb is also affected. View attachment 2155518 View attachment 2155516 View attachment 2155517
I'm not sure what you expected, but I think 1.5gb/s is tremendous. That's like a whole movie in SD quality per second.

I don't quite know why you'd need something faster.
 

macacam

macrumors member
Feb 10, 2022
49
108
7127285E-2B7D-4C92-9952-FAE7AF88E520.png

Looks like the same issue as the laptops and desktops. Higher speeds come with larger disk sizes due to ssd configurations.
 
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Shirasaki

macrumors P6
May 16, 2015
15,918
11,285
Guess they are moving away from using 128GB NAND flash module and no new ones are being manufactured.
To those folks asking why that matters, gamers certainly can benefit from faster storage access. Quicker loading at the start and during gaming sessions. Outside of that, faster storage means a more responsive iPadOS with background apps or stage manager.

To be fair, the sequential speed matters less than random access Speed, but still important Nonetheless.
 

sam_dean

Suspended
Sep 9, 2022
1,262
1,091
Your device is battery-powered. I would not want a faster SSD at a drastically shorter battery life.
 

VaruLV

macrumors 6502a
Mar 25, 2019
630
558
Im not sure there is problem there, havent looked for M1 256GB speed tests, but, given my M1 probably has only one chip, Im not sure there is anything to complain about in neither my case, nor yours, unless you really have to have 2TB drive speeds on yours, not just want, but need.
 

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ctg7w6

macrumors 6502
Oct 23, 2014
486
858
I’m surprised at people asking why they need it to be faster. It’s a pro device. People want or need the speed. It’s like guy asking why anyone would need more than a megabyte of ram or whatever a long time ago.

If nothing else, longevity of the device. What a weird thing to ask in my opinion.
 

rui no onna

Contributor
Oct 25, 2013
14,788
13,007
I’m surprised at people asking why they need it to be faster. It’s a pro device. People want or need the speed. It’s like guy asking why anyone would need more than a megabyte of ram or whatever a long time ago.

If nothing else, longevity of the device. What a weird thing to ask in my opinion.

Practically speaking, the overall performance difference from the SSD sequential speed will be negligible. Those random 4K speeds are more important.
 
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1BadManVan

macrumors 68040
Dec 20, 2009
3,161
3,301
Bc Canada
Im not sure there is problem there, havent looked for M1 256GB speed tests, but, given my M1 probably has only one chip, Im not sure there is anything to complain about in neither my case, nor yours, unless you really have to have 2TB drive speeds on yours, not just want, but need.
Well here is a 256 M1 for comparison.

C5CFC7BE-FD6F-4864-BFFF-13061A2A603C.png
 
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gilby101

macrumors 68030
Mar 17, 2010
2,694
1,461
Tasmania
m2 256gb version only 1.5gb/s read n write
I know what you meant by the 256gb, but the 1.5gb/s stopped me for moment (seemed strangely slow). Just to avoid confusion, please to use capital B when referring to bytes and keep lowercase b for bits. Most important when referring to speeds - disk throughput is usually quoted in bytes/s whilst the connector (particularly when external) is in bits/s. And, whilst I am nitpicking, giga is written as capital G. So 256 GB and 1.5 GB/s.
 
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CausticPuppy

macrumors 68000
May 1, 2012
1,536
68
I got iPad Air 4,iPad pro m1 on hand to compare with m2 12.9 iPad Pro. All have 256gb as ssd storage. Using jazz disk lite to test n result is showing that m2 256gb version only 1.5gb/s read n write. The result surprised me because I thought this year only 128gb version ipp ssd is downgraded but now mine 256gb is also affected. View attachment 2155518 View attachment 2155516 View attachment 2155517
Just in case you didn't know, those speeds are in MB/s, not mb/s. MB = megabyte, mb = megabit.

So it's not 1.5gb/s, it's 1.5 gigaBYTES per second.
1.5gbps would indeed be slow, but your actual speeds are about 10 times faster than that.
 

leifp

macrumors 6502
Feb 8, 2008
442
420
Canada
I hate gillibits per second. A gillion times too slow. I bet it renders the iPad all but unusable.
 

teh_hunterer

macrumors 65816
Jul 1, 2021
1,184
1,597
Your device is battery-powered. I would not want a faster SSD at a drastically shorter battery life.
That's got nothing to do with anything.

I’m surprised at people asking why they need it to be faster. It’s a pro device. People want or need the speed. It’s like guy asking why anyone would need more than a megabyte of ram or whatever a long time ago.

If nothing else, longevity of the device. What a weird thing to ask in my opinion.

It's a perfectly valid question. The speed is either good enough or it isn't. Just because it's half the speed of the 512GB model, doesn't mean the speed is too slow. Doesn't mean it's fast enough either. But just saying it's half of the higher model isn't useful.

Is the speed slow enough to cause any real world use drawbacks?
 
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