Does Ubuntu 8.04 (32 Bit) Support 4GB of RAM or less?

Asked by nksharma2

I have 4 GB RAM in my laptop dose ubuntu 8.04 (32Bit) support 4GB ram or like Windows Pro it only supports 3 GB.

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Bhavani Shankar
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Best Bhavani Shankar (bhavi) said :

Hello Sharma:

No problems like that in ubuntu hardy mate.... (I am sure it runs like a formula 1 car in your system)

Use the 64 bit version because:

An operating system can only support as much memory as the hardware can. A 32-bit system has an address space of 0-(2^32 - 1) so it can only support upto ~4 gigabytes of memory. This constraint applies to any operating system running on 32-bit hardware---linux, windows, or mac.

To answer your question, it depends on what type of hardware you have. If you have a 32-bit system, then ~4 gigabytes. If you have a 64-bit system, you can use more ram than you can afford.


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nksharma2 (nishant-sharma) said :

Thanks Bhavani Shankar, that solved my question.

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nksharma2 (nishant-sharma) said :

Thanks for such a good explaination.

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Shawn McMahon (smcmahon) said :

If you do happen to find yourself needing 4GB support (or more!) on 32-bit Ubuntu, perhaps because of some program or another that doesn't perform properly on 64-bit, then see this thread for an easy way to recompile your 32-bit kernel to support up to 64GB of RAM:

Note; the download sections look very innocuous, listing only a couple of things to download. Be advised that most of them will drag another 10 to 15 packages along with them; you want to be on broadband when you do this the first time.

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KK (kkfok1) said :

I have followed this thread , it does successfully discover upto 4GB of RAM however my Volume, Wireless, and webcam (nvcvideo) not working. And from other threads I see that the 64bit version will actually use up more memory and I am not comfortable to this. I have a T61 thinkpad.

All in all, I think the problem of having Hardy 32bit to support upto 4GB is still remain open. Hope that in the next release will resolve this problem by enabling or at least to provide a configurable way to discover upto 4GB RAM. Changing to 64 bit or server version, or compile a customise kernel with PAE just not the solution.