On Fri, Jun 11, 2010 at 1:47 PM, Alan Pope <a...@popey.com> wrote: > HI Liam/Bob > > On 11 June 2010 13:44, Liam Proven <lpro...@gmail.com> wrote: >> On Fri, Jun 11, 2010 at 7:54 AM, Bob Giles <thecorf...@gmail.com> wrote: >>> I am running 32bit Lucid on a Lenovo 3000 N200 laptop with 4Gb ram. >> >> If you have a 64-bit chip - which seems /extremely/ likely if the >> machine takes 4GB - then assuming that you actually want to /use/ all >> of your 4 gig, you should be running the 64-bit version. 32-bit PC OSs >> can't access more than about 3¼-3½ gig of RAM; the rest is >> inaccessible because the address space is occupied by the graphics >> card & other devices. >> > > Actually you can. > > Install linux-generic-image-pae package and you'll get the PAE enabled > kernel which allows 32-bit Ubuntu to see more than 3 and a bit GB of > RAM. Over 4GB indeed.
I think PAE is a pretty poor substitute for a flat 4+G memory space. All it does is page in higher bits of memory, a little like LIM-spec EMS, AKA Expanded memory, back in the DOS days. It's not the same thing at all. Secondly, the x86-32 architecture is notoriously register-starved. x86-64 has twice as many general-purpose registers, which means that x86-64 code executes that little bit faster than x86-32 code on the same CPU. Given that, unlike on Windows, it's a free upgrade with no real major drawbacks, I can't see any reason not to go for it. >> All *three*? What 3 are these? > > nvidia-glx-173 - Transitional package for nvidia-glx-173 > nvidia-glx-180 - Transitional package for nvidia-glx-185 > nvidia-glx-96 - Transitional package for nvidia-glx-96 > nvidia-glx-185 - Transitional package for nvidia-glx-185 > > Four even! :D Ah, come on, be fair! I *did* specifically mention these and address the reasons for their existence and why they are basically irrelevant for a modern 64-bit PC. -- Liam Proven • Profile: http://www.linkedin.com/in/liamproven Email: lpro...@cix.co.uk • GMail/GoogleTalk/Orkut: lpro...@gmail.com Tel: +44 20-8685-0498 • Cell: +44 7939-087884 • Fax: + 44 870-9151419 AOL/AIM/iChat/Yahoo/Skype: liamproven • LiveJournal/Twitter: lproven MSN: lpro...@hotmail.com • ICQ: 73187508 -- ubuntu-uk@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-uk https://wiki.ubuntu.com/UKTeam/
