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Editorial Team
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Asked: 2026-05-13T22:05:41+00:00

I heard that there is a hard limit on the size of .Net Array

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I heard that there is a hard limit on the size of .Net Array. It is said that the maximum amount of memory that can be allocated to any single instance of an Array object ( regardless of whether it’s int[], double[] or your own array) is 2GB. And no, if you have a 64 bit machine, the 2GB limit is still there.

I’m not sure whether my impression is correct or not. Anyone can confirm?

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  1. Editorial Team

    That is correct. No single object can be larger than 2 GB.

    As with 32-bit Windows operating
    systems, there is a 2GB limit on the
    size of an object you can create while
    running a 64-bit managed application
    on a 64-bit Windows operating system.

    This question has additional details and some useful links: Single objects still limited to 2 GB in size in CLR 4.0?

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