<div dir="ltr"><div>Thanks very much sir!</div><div><br></div><div>I guess it makes most sense to just have two of these machines side by side, and split the workload. ;-)</div><br></div><div class="gmail_extra"><br><div class="gmail_quote">On 3 September 2018 at 19:30, Nico Huber <span dir="ltr"><<a href="mailto:nico.h@gmx.de" target="_blank">nico.h@gmx.de</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi David,<br>
<span class=""><br>
On 03.09.2018 19:13, David Potocnik wrote:<br>
> Coreboot, or perhaps rule it out completely?<br>
<br>
</span>it's impossible, unless you want to heavily mod the mainboard. Ivy<br>
Bridge supports 4 ranks per channel, max 4GiB per rank. SO-DIMMs have<br>
only 2 ranks. So with 2 SO-DIMM slots, there are physical connections<br>
missing to get to 32GiB.<br>
<span class=""><br>
> Information on RAM frequencies is welcome as well:<br>
> <br>
> I've also heard reports of people running the RAM at 1866Mhz. A newer<br>
> version of the official BIOS reduced the original 1666Mhz, to 1333Mhz. I<br>
> believe there's a mod available that over-rides this:<br>
> <a href="http://x220.mcdonnelltech.com/resources/" rel="noreferrer" target="_blank">http://x220.mcdonnelltech.com/<wbr>resources/</a><br>
> <br>
> <br>
> How is this currently on Coreboot?<br>
<br>
</span>coreboot limits the frequency to whatever the board manufacturer con-<br>
figured the chipset to (using one-time programmable fuses). It can be<br>
configured, however, to ignore the fuses. Then it would use whatever<br>
the RAM supports up to the CPU's limit. This is overclocking so there<br>
is no guarantee that it would work on one X230 sample just because it<br>
works on another. And there is probably no real-world application that<br>
would benefit (2 x DDR3-800 is already quite fast compared to what Ivy<br>
bridge can do with the data).<br>
<br>
Hard to tell why Lenovo lowered the frequency late. Maybe because there<br>
was no performance impact but it saves power?<br>
<span class="HOEnZb"><font color="#888888"><br>
Nico<br>
</font></span></blockquote></div><br></div>