Re: [coreboot] 8 GB DIMMs on Nehalem (Arrandale)

[Stefan Tauner]

On Sat, 21 Jan 2017 18:46:00 -0500
Charlotte Plusplus  wrote:
> Addressing over 8G is not supported by the chipset used on nehalem thinkpad
> laptops (X201)
>
> Stupid limitation, but it is not the CPU fault.

Please don't spread FUD if you don't know what you are talking about.
Neither the RAM in the T410s nor the one in the X201 is even connected
to what remains of the "chipset" i.e. the southbridge in form of the
PCH/southbridge but directly to the memory controller in the CPU. The
chipset in the (QC version of the) W510 is actually exactly the same as
in the X201 and T410s: Ibex Peak.

8 GB DIMMs on Nehalem (Arrandale)

[Andrey Korolyov]

> The chipset in the (QC version of the) W510 is actually exactly the same as
> in the X201 and T410s: Ibex Peak.

But CPUs we are looking at *are* actually different - scale-down could
mean an exposure of a previously unaccounted design issue which
actually prevented 32nm CPU 'upgrade' to work reliably with >8G of
RAM... And AFAIR nobody ever reported to break official memory limits
within an entire family, I`ll be happy to know that this is not true.

Just to add .02c - DDR3 interposers from tek/futureplus are appearing
on ebay relatively frequently and for moderate price, so if someone
has will to spend some effort on this task, the analyzer coupled with
interposer could provide great help, with regard to unstable behavior
with a single 8G DIMM.