Ask Ubuntu is a question and answer site for Ubuntu users and developers. It's 100% free.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I've a motherboard that can accept 8G RAM, But Window only see and use 4G RAM. If I put in my 8G RAM sticks, Will installing a 64bit version of Ubuntu really access most of the 8G's, Or is this a pipe dream?

System Specs:

Intel core 2 Q6600 quad
Intel motherboard DG965WH
4G ram (currently installed)
1TB (2 disks)
Vista x64
ATI Radeon HD5670
share|improve this question
If you already have the 8G sticks, put them in and try a Ubuntu live CD to see if they are recognized... They should be... – adempewolff May 22 '12 at 2:48

You can run more than 4gb on a 32 bit system with PAE, or physical address extensions - which i believe the default 32 bit kernel comes with, but 64 bit would have better performance, and the system itself supports 4x 2gb sticks for 8 gigs. There's no reason why it should not work

share|improve this answer

Yes; Ubuntu supports more than 4GB of ram, even on the 32bit version. Microsoft has decided you have to pay extra for a build of windows ( server edition ) that supports more than 4gb of ram on 32 bit, though IIRC, Vista 64 bit should also support 8gb of ram.

share|improve this answer
Microsoft has decided you have to pay extra for a build of windows that supports more than 4gb of windows on 32 bit -> no, this is incorrect. PAE doesn't require another "build" or that you pay extra. Where did you hear this? – Sathya May 22 '12 at 11:50
@sathya "Microsoft Windows implements PAE if booted with the appropriate option, but current 32-bit desktop editions enforce the physical address space within 4GB even in PAE mode. According to Geoff Chappell, Microsoft limits 32-bit versions of Windows to 4GB as a matter of its licensing policy," SOURCE: – Rinzwind May 22 '12 at 11:54
@psusi To me your answer is corect and the downvote should not have been given. So upvoted ;) – Rinzwind May 22 '12 at 11:58
@sathya He says "you have to pay extra fpr more than 4Gb on a 32 bit system". That stmt is correct. – Rinzwind May 22 '12 at 12:07
@Sathya, he already did. The more expensive server edition of windows can use the full 64 gb of pae addressable memory, which is what I was referring to. – psusi May 22 '12 at 13:30

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.