Xeon and Memory...

[liiroy]

On a dual socket board and Xeon (Haswell), do you have to populate all 8 DIMM slots (4 per CPU) to use Dual CPU setup?

 

[[Ion]]

No. I have a dual Haswell-EP (Smolensk; see sig) system with 16 RAM slots (8 per CPU) and only two sticks of RAM in it. I don't even think you need two sticks...one would probably work.

 

[liiroy]

I was worrying that I have to buy 8 sticks of ram (quite expensive). so if I go with 4 (2 per CPU) that should work too?

 

[Trotador22]

It will work, you will use two out of the four memory channles the CPUs have but it will work perfectly.

 

[Nathan_P]

You will lose some bandwidth and please make sure that the memory you buy is on the compatibility list, downloadable from the mobo maker's websitte