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Repair guides and disassembly information for the 16-inch MacBook Pro released in October of 2021, featuring Apple-designed M1 Pro and M1 Max SoCs. Model A2485.

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SanDisk Extreme Pro 2TB advertised at 2000MB/s reaches less that 1000M

My SanDisk Extreme Pro 2TB advertised at 2000MB/s reaches less that 1000MB/s with Blackmagic Speed test on all ports of my Mac Studio M1 Ultra using the supplied cables.

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Yep! Using the supplied cables will only given you that! You need to get a Thunderbolt3 cable to get the better performance.

SanDisk does not make note of that in their docs or even on the package that you need a different cable to get the full performance.

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Well, they sort of do make note of that - if you read the fine print.

** Up to 2000MB/s read and write speeds. Based on internal testing; performance may be lower depending on host device, interface, usage conditions and other factors. 1MB = 1,000,000 bytes.


@ruggb - They forgot Cable as being the biggest one! This gets into how many data lanes are offered 2 or 4.


@ruggb - I guess they did ;-}

But a hint on the cable would have helped them not hurt them as many people I bet returned the drive without spending the effort to understand why and a TB3 or TB4 cable is not cheap either!



They did a CYA with "other factors". 2 data lines id a balance config. 4 data lines are available on a USB C cable but if the interface isn't using 4 data lines, it doesn't matter, does it? Actually, I don't know any that do use 4.


@danj yeah, you would have to get their test setup, which they don't publish. Only reviewers would list that.


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