[ltp] X60s 4 GB RAM PAE only 3 recognized (64 Bit)
Fri, 14 Nov 2014 09:12:32 +0100
>> "Paul" == Paul Seelig <email@example.com> writes:
> On 11/13/2014 09:41 AM, Uwe Brauer wrote:
>> Now I upgraded again to 4 GB RAM, but even with PAE enabled only 3 are
>> Would it help to upgrade to a 64 bit version of Ubuntu?
> The X60s is a variant of the X60, which in turn is based on the same
> chipset as the T60 Thinkpad generation. The chipset used in this
> Thinkpad generation is only capable of addressing a maximum of 3GB RAM.
> This is a hardware imposed limit which cannot be circumvented by any
> means, e.g., installation of a 64bit OS. See the more up to date German
> http://thinkwiki.de/X60 for further details.
Thanks for pointing this out. I must say the switch from 2.5 to 3 did
not cause any notable performance burst, however I replaced my HDD by a
SSD and this was a big performance improvement. I will add the relevant
information in the thinkwiki you just mentioned.
> While this is very unfortunate, for T60 machines it is possible to
> replace the mainboard with a T61 variant, which easily supports up to
> 2x4=8GB RAM. http://thinkwiki.org/wiki/Unofficial_maximum_memory_specs
But isn't it very expensive (and complicated) to replace a mainboard in