[GTALUG] New Deaktop PC -- To Run debian Linux - PCPartPicker Recipe;

[Lennart Sorensen]

On Wed, Mar 28, 2018 at 06:35:59PM -0400, D. Hugh Redelmeier via talk wrote:
> My Sun 3/60 has 24 slots.  But the largest memory module that it will
> accept is 1MiB (note: not 1GiB).  So more isn't always better :-)
> 
> As memory systems get faster, fan-out and signal path length matter
> more.  So 4 is apparently the limit for "unbuffered" memory on one PC
> memory bus these days.

The limit is 2 these days.  But dual channel makes you have 4 slots on
basic systems (Core i9 level machines have 4 channels and hence 8 slots).

> If you have multiple processors on a motherboard, they probably have a
> separate bus for each processor so you get 4 slots per processor.

Well the CPUs that allow that these days are now at 6 memory channels
per CPU (ie the Xeon Silver line).

Putting 1.5TB ram in a server seems to be perfectly doable these days,
if you have a lot of cash.

-- 
Len Sorensen