HPE 9000 and HPE e3000 Servers
cancel
Showing results for 
Search instead for 
Did you mean: 

Memory accross 2 carriers

 
SOLVED
Go to solution
Lacrosse
Regular Advisor

Memory accross 2 carriers

if I were to split my memory dimms accross 2 carriers as opposed to having all on one would I see a noticible performance increase
2 REPLIES 2
Joshua Scott
Honored Contributor
Solution

Re: Memory accross 2 carriers

The memory bandwidth on the N4000 is 2.1GB/sec per memory carrier, so with 4 memory carriers, you would get 8.4GB/sec.

The L-class is 2.15GB/memory carrier.

Josh
What are the chances...
Ted Buis
Honored Contributor

Re: Memory accross 2 carriers

It also depends on how many CPUs you have in your system. The L and N class used CPUs that only had about 2.1GB/sec of bandwidth each. The on-chip CPU cache helps but my opinion is that in those systems you would want at least a memory carrier for each pair of CPUs. Beyond that I'm not sure that you would get a big return, but I/O also consumes memory bandwidth, so it depends. Unfortunately, there is no tool to show you time lost due to insufficient bandwidth to memory. Naturally, if you are I/O bound or network bound, then adding carriers doesn't help.
Mom 6